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It's the usual big pile of driver updates and additions, but we

Browse Source 
do have a couple core changes in here as well.
 
 Core:
 
  - CLK_IS_CRITICAL support has been added. This should allow drivers
    to properly express that a certain clk should stay on even if
    their prepare/enable count drops to 0 (and in turn the parents of
    these clks should stay enabled).
 
  - A clk registration API has been added, clk_hw_register(), and
    an OF clk provider API has been added, of_clk_add_hw_provider().
    These APIs have been put in place to further split clk providers
    from clk consumers, with the goal being to have clk providers
    never deal with struct clk pointers at all. Conversion of provider
    drivers is on going. clkdev has also gained support for registering
    clk_hw pointers directly so we can convert drivers that don't use
    devicetree.
 
 New Drivers:
 
  - Marvell ap806 and cp110 system controllers (with clks inside!)
  - Hisilicon Hi3519 clock and reset controller
  - Axis ARTPEC-6 clock controllers
  - Oxford Semiconductor OXNAS clock controllers
  - AXS10X I2S PLL
  - Rockchip RK3399 clock and reset controller
 
 Updates:
 
  - MMC2 and UART2 clks on Samsung Exynos 3250, ACLK on Samsung Exynos 542x
    SoCs, and some more clk ID exporting for bus frequency scaling
  - Proper BCM2835 PCM clk support and various other clks
  - i.MX clk updates for i.MX6SX, i.MX7, and VF610
  - Renesas updates for R-Car H3
  - Tegra210 got updates for DisplayPort and HDMI 2.0
  - Rockchip driver refactorings and fixes due to adding RK3399 support
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Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk updates from Stephen Boyd:
 "It's the usual big pile of driver updates and additions, but we do
  have a couple core changes in here as well.

  Core:

   - CLK_IS_CRITICAL support has been added.  This should allow drivers
     to properly express that a certain clk should stay on even if their
     prepare/enable count drops to 0 (and in turn the parents of these
     clks should stay enabled).

   - A clk registration API has been added, clk_hw_register(), and an OF
     clk provider API has been added, of_clk_add_hw_provider().  These
     APIs have been put in place to further split clk providers from clk
     consumers, with the goal being to have clk providers never deal
     with struct clk pointers at all.  Conversion of provider drivers is
     on going.  clkdev has also gained support for registering clk_hw
     pointers directly so we can convert drivers that don't use
     devicetree.

  New Drivers:

   - Marvell ap806 and cp110 system controllers (with clks inside!)
   - Hisilicon Hi3519 clock and reset controller
   - Axis ARTPEC-6 clock controllers
   - Oxford Semiconductor OXNAS clock controllers
   - AXS10X I2S PLL
   - Rockchip RK3399 clock and reset controller

  Updates:

   - MMC2 and UART2 clks on Samsung Exynos 3250, ACLK on Samsung Exynos
     542x SoCs, and some more clk ID exporting for bus frequency scaling
   - Proper BCM2835 PCM clk support and various other clks
   - i.MX clk updates for i.MX6SX, i.MX7, and VF610
   - Renesas updates for R-Car H3
   - Tegra210 got updates for DisplayPort and HDMI 2.0
   - Rockchip driver refactorings and fixes due to adding RK3399 support"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (139 commits)
  clk: fix critical clock locking
  clk: qcom: mmcc-8996: Remove clocks that should be controlled by RPM
  clk: ingenic: Allow divider value to be divided
  clk: sunxi: Add display and TCON0 clocks driver
  clk: rockchip: drop old_rate calculation on pll rate changes
  clk: rockchip: simplify GRF handling in pll clocks
  clk: rockchip: lookup General Register Files in rockchip_clk_init
  clk: rockchip: fix the rk3399 sdmmc sample / drv name
  clk: mvebu: new driver for Armada CP110 system controller
  dt-bindings: arm: add DT binding for Marvell CP110 system controller
  clk: mvebu: new driver for Armada AP806 system controller
  clk: hisilicon: add CRG driver for hi3519 soc
  clk: hisilicon: export some hisilicon APIs to modules
  reset: hisilicon: add reset controller driver for hisilicon SOCs
  clk: bcm/kona: Do not use sizeof on pointer type
  clk: qcom: msm8916: Fix crypto clock flags
  clk: nxp: lpc18xx: Initialize clk_init_data::flags to 0
  clk/axs10x: Add I2S PLL clock driver
  clk: imx7d: fix ahb clock mux 1
  clk: fix comment of devm_clk_hw_register()
  ...
This commit is contained in:
Linus Torvalds 2016-05-20 20:18:12 -07:00
commit 0eff4589c3
136 changed files with 7164 additions and 1122 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt Normal file
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@ -0,0 +1,35 @@
Marvell Armada AP806 System Controller
======================================
The AP806 is one of the two core HW blocks of the Marvell Armada 7K/8K
SoCs. It contains a system controller, which provides a number
registers giving access to numerous features: clocks, pin-muxing and
many other SoC configuration items. This DT binding allows to describe
this system controller.
The Device Tree node representing the AP806 system controller provides
a number of clocks:
- 0: clock of CPU cluster 0
- 1: clock of CPU cluster 1
- 2: fixed PLL at 1200 Mhz
- 3: MSS clock, derived from the fixed PLL
Required properties:
- compatible: must be:
"marvell,ap806-system-controller", "syscon"
- reg: register area of the AP806 system controller
- #clock-cells: must be set to 1
- clock-output-names: must be defined to:
"ap-cpu-cluster-0", "ap-cpu-cluster-1", "ap-fixed", "ap-mss"
Example:
syscon: system-controller@6f4000 {
compatible = "marvell,ap806-system-controller", "syscon";
#clock-cells = <1>;
clock-output-names = "ap-cpu-cluster-0", "ap-cpu-cluster-1",
"ap-fixed", "ap-mss";
reg = <0x6f4000 0x1000>;
};

83
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@ -0,0 +1,83 @@
Marvell Armada CP110 System Controller 0
========================================
The CP110 is one of the two core HW blocks of the Marvell Armada 7K/8K
SoCs. It contains two sets of system control registers, System
Controller 0 and System Controller 1. This Device Tree binding allows
to describe the first system controller, which provides registers to
configure various aspects of the SoC.
The Device Tree node representing this System Controller 0 provides a
number of clocks:
- a set of core clocks
- a set of gatable clocks
Those clocks can be referenced by other Device Tree nodes using two
cells:
- The first cell must be 0 or 1. 0 for the core clocks and 1 for the
gatable clocks.
- The second cell identifies the particular core clock or gatable
clocks.
The following clocks are available:
- Core clocks
- 0 0 APLL
- 0 1 PPv2 core
- 0 2 EIP
- 0 3 Core
- 0 4 NAND core
- Gatable clocks
- 1 0 Audio
- 1 1 Comm Unit
- 1 2 NAND
- 1 3 PPv2
- 1 4 SDIO
- 1 5 MG Domain
- 1 6 MG Core
- 1 7 XOR1
- 1 8 XOR0
- 1 9 GOP DP
- 1 11 PCIe x1 0
- 1 12 PCIe x1 1
- 1 13 PCIe x4
- 1 14 PCIe / XOR
- 1 15 SATA
- 1 16 SATA USB
- 1 17 Main
- 1 18 SD/MMC
- 1 21 Slow IO (SPI, NOR, BootROM, I2C, UART)
- 1 22 USB3H0
- 1 23 USB3H1
- 1 24 USB3 Device
- 1 25 EIP150
- 1 26 EIP197
Required properties:
- compatible: must be:
"marvell,cp110-system-controller0", "syscon";
- reg: register area of the CP110 system controller 0
- #clock-cells: must be set to 2
- core-clock-output-names must be set to:
"cpm-apll", "cpm-ppv2-core", "cpm-eip", "cpm-core", "cpm-nand-core"
- gate-clock-output-names must be set to:
"cpm-audio", "cpm-communit", "cpm-nand", "cpm-ppv2", "cpm-sdio",
"cpm-mg-domain", "cpm-mg-core", "cpm-xor1", "cpm-xor0", "cpm-gop-dp", "none",
"cpm-pcie_x10", "cpm-pcie_x11", "cpm-pcie_x4", "cpm-pcie-xor", "cpm-sata",
"cpm-sata-usb", "cpm-main", "cpm-sd-mmc", "none", "none", "cpm-slow-io",
"cpm-usb3h0", "cpm-usb3h1", "cpm-usb3dev", "cpm-eip150", "cpm-eip197";
Example:
cpm_syscon0: system-controller@440000 {
compatible = "marvell,cp110-system-controller0", "syscon";
reg = <0x440000 0x1000>;
#clock-cells = <2>;
core-clock-output-names = "cpm-apll", "cpm-ppv2-core", "cpm-eip", "cpm-core", "cpm-nand-core";
gate-clock-output-names = "cpm-audio", "cpm-communit", "cpm-nand", "cpm-ppv2", "cpm-sdio",
"cpm-mg-domain", "cpm-mg-core", "cpm-xor1", "cpm-xor0", "cpm-gop-dp", "none",
"cpm-pcie_x10", "cpm-pcie_x11", "cpm-pcie_x4", "cpm-pcie-xor", "cpm-sata",
"cpm-sata-usb", "cpm-main", "cpm-sd-mmc", "none", "none", "cpm-slow-io",
"cpm-usb3h0", "cpm-usb3h1", "cpm-usb3dev", "cpm-eip150", "cpm-eip197";
};

41
Documentation/devicetree/bindings/clock/artpec6.txt Normal file
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@ -0,0 +1,41 @@
* Clock bindings for Axis ARTPEC-6 chip
The bindings are based on the clock provider binding in
Documentation/devicetree/bindings/clock/clock-bindings.txt
External clocks:
----------------
There are two external inputs to the main clock controller which should be
provided using the common clock bindings.
- "sys_refclk": External 50 Mhz oscillator (required)
- "i2s_refclk": Alternate audio reference clock (optional).
Main clock controller
---------------------
Required properties:
- #clock-cells: Should be <1>
See dt-bindings/clock/axis,artpec6-clkctrl.h for the list of valid identifiers.
- compatible: Should be "axis,artpec6-clkctrl"
- reg: Must contain the base address and length of the system controller
- clocks: Must contain a phandle entry for each clock in clock-names
- clock-names: Must include the external oscillator ("sys_refclk"). Optional
ones are the audio reference clock ("i2s_refclk") and the audio fractional
dividers ("frac_clk0" and "frac_clk1").
Examples:
ext_clk: ext_clk {
#clock-cells = <0>;
compatible = "fixed-clock";
clock-frequency = <50000000>;
};
clkctrl: clkctrl@f8000000 {
#clock-cells = <1>;
compatible = "axis,artpec6-clkctrl";
reg = <0xf8000000 0x48>;
clocks = <&ext_clk>;
clock-names = "sys_refclk";
};

25
Documentation/devicetree/bindings/clock/axs10x-i2s-pll-clock.txt Normal file
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@ -0,0 +1,25 @@
Binding for the AXS10X I2S PLL clock
This binding uses the common clock binding[1].
[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
Required properties:
- compatible: shall be "snps,axs10x-i2s-pll-clock"
- reg : address and length of the I2S PLL register set.
- clocks: shall be the input parent clock phandle for the PLL.
- #clock-cells: from common clock binding; Should always be set to 0.
Example:
pll_clock: pll_clock {
compatible = "fixed-clock";
clock-frequency = <27000000>;
#clock-cells = <0>;
};
i2s_clock@100a0 {
compatible = "snps,axs10x-i2s-pll-clock";
reg = <0x100a0 0x10>;
clocks = <&pll_clock>;
#clock-cells = <0>;
};

46
Documentation/devicetree/bindings/clock/hi3519-crg.txt Normal file
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@ -0,0 +1,46 @@
* Hisilicon Hi3519 Clock and Reset Generator(CRG)
The Hi3519 CRG module provides clock and reset signals to various
controllers within the SoC.
This binding uses the following bindings:
Documentation/devicetree/bindings/clock/clock-bindings.txt
Documentation/devicetree/bindings/reset/reset.txt
Required Properties:
- compatible: should be one of the following.
- "hisilicon,hi3519-crg" - controller compatible with Hi3519 SoC.
- reg: physical base address of the controller and length of memory mapped
region.
- #clock-cells: should be 1.
Each clock is assigned an identifier and client nodes use this identifier
to specify the clock which they consume.
All these identifier could be found in <dt-bindings/clock/hi3519-clock.h>.
- #reset-cells: should be 2.
A reset signal can be controlled by writing a bit register in the CRG module.
The reset specifier consists of two cells. The first cell represents the
register offset relative to the base address. The second cell represents the
bit index in the register.
Example: CRG nodes
CRG: clock-reset-controller@12010000 {
compatible = "hisilicon,hi3519-crg";
reg = <0x12010000 0x10000>;
#clock-cells = <1>;
#reset-cells = <2>;
};
Example: consumer nodes
i2c0: i2c@12110000 {
compatible = "hisilicon,hi3519-i2c";
reg = <0x12110000 0x1000>;
clocks = <&CRG HI3519_I2C0_RST>;
resets = <&CRG 0xe4 0>;
};

1
Documentation/devicetree/bindings/clock/imx35-clock.txt
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@ -94,6 +94,7 @@ clocks and IDs.
csi_sel 79
iim_gate 80
gpu2d_gate 81
ckli_gate 82
Examples:

35
Documentation/devicetree/bindings/clock/oxnas,stdclk.txt Normal file
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@ -0,0 +1,35 @@
Oxford Semiconductor OXNAS SoC Family Standard Clocks
================================================
Please also refer to clock-bindings.txt in this directory for common clock
bindings usage.
Required properties:
- compatible: Should be "oxsemi,ox810se-stdclk"
- #clock-cells: 1, see below
Parent node should have the following properties :
- compatible: Should be "oxsemi,ox810se-sys-ctrl", "syscon", "simple-mfd"
For OX810SE, the clock indices are :
- 0: LEON
- 1: DMA_SGDMA
- 2: CIPHER
- 3: SATA
- 4: AUDIO
- 5: USBMPH
- 6: ETHA
- 7: PCIA
- 8: NAND
example:
sys: sys-ctrl@000000 {
compatible = "oxsemi,ox810se-sys-ctrl", "syscon", "simple-mfd";
reg = <0x000000 0x100000>;
stdclk: stdclk {
compatible = "oxsemi,ox810se-stdclk";
#clock-cells = <1>;
};
};

62
Documentation/devicetree/bindings/clock/rockchip,rk3399-cru.txt Normal file
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@ -0,0 +1,62 @@
* Rockchip RK3399 Clock and Reset Unit
The RK3399 clock controller generates and supplies clock to various
controllers within the SoC and also implements a reset controller for SoC
peripherals.
Required Properties:
- compatible: PMU for CRU should be "rockchip,rk3399-pmucru"
- compatible: CRU should be "rockchip,rk3399-cru"
- reg: physical base address of the controller and length of memory mapped
region.
- #clock-cells: should be 1.
- #reset-cells: should be 1.
Each clock is assigned an identifier and client nodes can use this identifier
to specify the clock which they consume. All available clocks are defined as
preprocessor macros in the dt-bindings/clock/rk3399-cru.h headers and can be
used in device tree sources. Similar macros exist for the reset sources in
these files.
External clocks:
There are several clocks that are generated outside the SoC. It is expected
that they are defined using standard clock bindings with following
clock-output-names:
- "xin24m" - crystal input - required,
- "xin32k" - rtc clock - optional,
- "clkin_gmac" - external GMAC clock - optional,
- "clkin_i2s" - external I2S clock - optional,
- "pclkin_cif" - external ISP clock - optional,
- "clk_usbphy0_480m" - output clock of the pll in the usbphy0
- "clk_usbphy1_480m" - output clock of the pll in the usbphy1
Example: Clock controller node:
pmucru: pmu-clock-controller@ff750000 {
compatible = "rockchip,rk3399-pmucru";
reg = <0x0 0xff750000 0x0 0x1000>;
#clock-cells = <1>;
#reset-cells = <1>;
};
cru: clock-controller@ff760000 {
compatible = "rockchip,rk3399-cru";
reg = <0x0 0xff760000 0x0 0x1000>;
#clock-cells = <1>;
#reset-cells = <1>;
};
Example: UART controller node that consumes the clock generated by the clock
controller:
uart0: serial@ff1a0000 {
compatible = "rockchip,rk3399-uart", "snps,dw-apb-uart";
reg = <0x0 0xff180000 0x0 0x100>;
clocks = <&cru SCLK_UART0>, <&cru PCLK_UART0>;
clock-names = "baudclk", "apb_pclk";
interrupts = <GIC_SPI 99 IRQ_TYPE_LEVEL_HIGH>;
reg-shift = <2>;
reg-io-width = <4>;
};

6
Documentation/devicetree/bindings/clock/sunxi.txt
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@ -10,6 +10,7 @@ Required properties:
"allwinner,sun4i-a10-pll1-clk" - for the main PLL clock and PLL4
"allwinner,sun6i-a31-pll1-clk" - for the main PLL clock on A31
"allwinner,sun8i-a23-pll1-clk" - for the main PLL clock on A23
"allwinner,sun4i-a10-pll3-clk" - for the video PLL clock on A10
"allwinner,sun9i-a80-pll4-clk" - for the peripheral PLLs on A80
"allwinner,sun4i-a10-pll5-clk" - for the PLL5 clock
"allwinner,sun4i-a10-pll6-clk" - for the PLL6 clock
@ -63,7 +64,9 @@ Required properties:
"allwinner,sun8i-a83t-bus-gates-clk" - for the bus gates on A83T
"allwinner,sun8i-h3-bus-gates-clk" - for the bus gates on H3
"allwinner,sun9i-a80-apbs-gates-clk" - for the APBS gates on A80
"allwinner,sun4i-a10-display-clk" - for the display clocks on the A10
"allwinner,sun4i-a10-dram-gates-clk" - for the DRAM gates on A10
"allwinner,sun5i-a13-dram-gates-clk" - for the DRAM gates on A13
"allwinner,sun5i-a13-mbus-clk" - for the MBUS clock on A13
"allwinner,sun4i-a10-mmc-clk" - for the MMC clock
"allwinner,sun9i-a80-mmc-clk" - for mmc module clocks on A80
@ -73,6 +76,8 @@ Required properties:
"allwinner,sun8i-a23-mbus-clk" - for the MBUS clock on A23
"allwinner,sun7i-a20-out-clk" - for the external output clocks
"allwinner,sun7i-a20-gmac-clk" - for the GMAC clock module on A20/A31
"allwinner,sun4i-a10-tcon-ch0-clk" - for the TCON channel 0 clock on the A10
"allwinner,sun4i-a10-tcon-ch1-clk" - for the TCON channel 1 clock on the A10
"allwinner,sun4i-a10-usb-clk" - for usb gates + resets on A10 / A20
"allwinner,sun5i-a13-usb-clk" - for usb gates + resets on A13
"allwinner,sun6i-a31-usb-clk" - for usb gates + resets on A31
@ -81,6 +86,7 @@ Required properties:
"allwinner,sun9i-a80-usb-mod-clk" - for usb gates + resets on A80
"allwinner,sun9i-a80-usb-phy-clk" - for usb phy gates + resets on A80
"allwinner,sun4i-a10-ve-clk" - for the Video Engine clock
"allwinner,sun6i-a31-display-clk" - for the display clocks
Required properties for all clocks:
- reg : shall be the control register address for the clock.

1
Documentation/driver-model/devres.txt
View File

@ -236,6 +236,7 @@ certainly invest a bit more effort into libata core layer).
CLOCK
devm_clk_get()
devm_clk_put()
devm_clk_hw_register()
DMA
dmam_alloc_coherent()

2
MAINTAINERS
View File

@ -977,7 +977,7 @@ S: Maintained
L: linux-arm-kernel@axis.com
F: arch/arm/mach-artpec
F: arch/arm/boot/dts/artpec6*
F: drivers/clk/clk-artpec6.c
F: drivers/clk/axis
ARM/ASPEED MACHINE SUPPORT
M: Joel Stanley <joel@jms.id.au>

6
drivers/clk/Kconfig
View File

@ -200,6 +200,12 @@ config COMMON_CLK_PXA
config COMMON_CLK_PIC32
def_bool COMMON_CLK && MACH_PIC32
config COMMON_CLK_OXNAS
bool "Clock driver for the OXNAS SoC Family"
select MFD_SYSCON
---help---
Support for the OXNAS SoC Family clocks.
source "drivers/clk/bcm/Kconfig"
source "drivers/clk/hisilicon/Kconfig"
source "drivers/clk/mvebu/Kconfig"

5
drivers/clk/Makefile
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@ -33,6 +33,7 @@ obj-$(CONFIG_ARCH_MB86S7X) += clk-mb86s7x.o
obj-$(CONFIG_ARCH_MOXART) += clk-moxart.o
obj-$(CONFIG_ARCH_NOMADIK) += clk-nomadik.o
obj-$(CONFIG_ARCH_NSPIRE) += clk-nspire.o
obj-$(CONFIG_COMMON_CLK_OXNAS) += clk-oxnas.o
obj-$(CONFIG_COMMON_CLK_PALMAS) += clk-palmas.o
obj-$(CONFIG_CLK_QORIQ) += clk-qoriq.o
obj-$(CONFIG_COMMON_CLK_RK808) += clk-rk808.o
@ -51,6 +52,7 @@ obj-$(CONFIG_COMMON_CLK_WM831X) += clk-wm831x.o
obj-$(CONFIG_COMMON_CLK_XGENE) += clk-xgene.o
obj-$(CONFIG_COMMON_CLK_PWM) += clk-pwm.o
obj-$(CONFIG_COMMON_CLK_AT91) += at91/
obj-$(CONFIG_ARCH_ARTPEC) += axis/
obj-y += bcm/
obj-$(CONFIG_ARCH_BERLIN) += berlin/
obj-$(CONFIG_ARCH_HISI) += hisilicon/
@ -62,7 +64,7 @@ obj-$(CONFIG_MACH_PIC32) += microchip/
ifeq ($(CONFIG_COMMON_CLK), y)
obj-$(CONFIG_ARCH_MMP) += mmp/
endif
obj-$(CONFIG_PLAT_ORION) += mvebu/
obj-y += mvebu/
obj-$(CONFIG_ARCH_MESON) += meson/
obj-$(CONFIG_ARCH_MXS) += mxs/
obj-$(CONFIG_MACH_PISTACHIO) += pistachio/
@ -85,3 +87,4 @@ obj-$(CONFIG_X86) += x86/
obj-$(CONFIG_ARCH_ZX) += zte/
obj-$(CONFIG_ARCH_ZYNQ) += zynq/
obj-$(CONFIG_H8300) += h8300/
obj-$(CONFIG_ARC_PLAT_AXS10X) += axs10x/

2
drivers/clk/at91/clk-h32mx.c
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@ -114,7 +114,7 @@ static void __init of_sama5d4_clk_h32mx_setup(struct device_node *np)
h32mxclk->regmap = regmap;
clk = clk_register(NULL, &h32mxclk->hw);
if (!clk) {
if (IS_ERR(clk)) {
kfree(h32mxclk);
return;
}

1
drivers/clk/axis/Makefile Normal file
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@ -0,0 +1 @@
obj-$(CONFIG_MACH_ARTPEC6) += clk-artpec6.o

242
drivers/clk/axis/clk-artpec6.c Normal file
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@ -0,0 +1,242 @@
/*
* ARTPEC-6 clock initialization
*
* Copyright 2015-2016 Axis Comunications AB.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/clk-provider.h>
#include <linux/device.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <dt-bindings/clock/axis,artpec6-clkctrl.h>
#define NUM_I2S_CLOCKS 2
struct artpec6_clkctrl_drvdata {
struct clk *clk_table[ARTPEC6_CLK_NUMCLOCKS];
void __iomem *syscon_base;
struct clk_onecell_data clk_data;
spinlock_t i2scfg_lock;
};
static struct artpec6_clkctrl_drvdata *clkdata;
static const char *const i2s_clk_names[NUM_I2S_CLOCKS] = {
"i2s0",
"i2s1",
};
static const int i2s_clk_indexes[NUM_I2S_CLOCKS] = {
ARTPEC6_CLK_I2S0_CLK,
ARTPEC6_CLK_I2S1_CLK,
};
static void of_artpec6_clkctrl_setup(struct device_node *np)
{
int i;
const char *sys_refclk_name;
u32 pll_mode, pll_m, pll_n;
struct clk **clks;
/* Mandatory parent clock. */
i = of_property_match_string(np, "clock-names", "sys_refclk");
if (i < 0)
return;
sys_refclk_name = of_clk_get_parent_name(np, i);
clkdata = kzalloc(sizeof(*clkdata), GFP_KERNEL);
if (!clkdata)
return;
clks = clkdata->clk_table;
for (i = 0; i < ARTPEC6_CLK_NUMCLOCKS; ++i)
clks[i] = ERR_PTR(-EPROBE_DEFER);
clkdata->syscon_base = of_iomap(np, 0);
BUG_ON(clkdata->syscon_base == NULL);
/* Read PLL1 factors configured by boot strap pins. */
pll_mode = (readl(clkdata->syscon_base) >> 6) & 3;
switch (pll_mode) {
case 0: /* DDR3-2133 mode */
pll_m = 4;
pll_n = 85;
break;
case 1: /* DDR3-1866 mode */
pll_m = 6;
pll_n = 112;
break;
case 2: /* DDR3-1600 mode */
pll_m = 4;
pll_n = 64;
break;
case 3: /* DDR3-1333 mode */
pll_m = 8;
pll_n = 106;
break;
}
clks[ARTPEC6_CLK_CPU] =
clk_register_fixed_factor(NULL, "cpu", sys_refclk_name, 0, pll_n,
pll_m);
clks[ARTPEC6_CLK_CPU_PERIPH] =
clk_register_fixed_factor(NULL, "cpu_periph", "cpu", 0, 1, 2);
/* EPROBE_DEFER on the apb_clock is not handled in amba devices. */
clks[ARTPEC6_CLK_UART_PCLK] =
clk_register_fixed_factor(NULL, "uart_pclk", "cpu", 0, 1, 8);
clks[ARTPEC6_CLK_UART_REFCLK] =
clk_register_fixed_rate(NULL, "uart_ref", sys_refclk_name, 0,
50000000);
clks[ARTPEC6_CLK_SPI_PCLK] =
clk_register_fixed_factor(NULL, "spi_pclk", "cpu", 0, 1, 8);
clks[ARTPEC6_CLK_SPI_SSPCLK] =
clk_register_fixed_rate(NULL, "spi_sspclk", sys_refclk_name, 0,
50000000);
clks[ARTPEC6_CLK_DBG_PCLK] =
clk_register_fixed_factor(NULL, "dbg_pclk", "cpu", 0, 1, 8);
clkdata->clk_data.clks = clkdata->clk_table;
clkdata->clk_data.clk_num = ARTPEC6_CLK_NUMCLOCKS;
of_clk_add_provider(np, of_clk_src_onecell_get, &clkdata->clk_data);
}
CLK_OF_DECLARE(artpec6_clkctrl, "axis,artpec6-clkctrl",
of_artpec6_clkctrl_setup);
static int artpec6_clkctrl_probe(struct platform_device *pdev)
{
int propidx;
struct device_node *np = pdev->dev.of_node;
struct device *dev = &pdev->dev;
struct clk **clks = clkdata->clk_table;
const char *sys_refclk_name;
const char *i2s_refclk_name = NULL;
const char *frac_clk_name[2] = { NULL, NULL };
const char *i2s_mux_parents[2];
u32 muxreg;
int i;
int err = 0;
/* Mandatory parent clock. */
propidx = of_property_match_string(np, "clock-names", "sys_refclk");
if (propidx < 0)
return -EINVAL;
sys_refclk_name = of_clk_get_parent_name(np, propidx);
/* Find clock names of optional parent clocks. */
propidx = of_property_match_string(np, "clock-names", "i2s_refclk");
if (propidx >= 0)
i2s_refclk_name = of_clk_get_parent_name(np, propidx);
propidx = of_property_match_string(np, "clock-names", "frac_clk0");
if (propidx >= 0)
frac_clk_name[0] = of_clk_get_parent_name(np, propidx);
propidx = of_property_match_string(np, "clock-names", "frac_clk1");
if (propidx >= 0)
frac_clk_name[1] = of_clk_get_parent_name(np, propidx);
spin_lock_init(&clkdata->i2scfg_lock);
clks[ARTPEC6_CLK_NAND_CLKA] =
clk_register_fixed_factor(dev, "nand_clka", "cpu", 0, 1, 8);
clks[ARTPEC6_CLK_NAND_CLKB] =
clk_register_fixed_rate(dev, "nand_clkb", sys_refclk_name, 0,
100000000);
clks[ARTPEC6_CLK_ETH_ACLK] =
clk_register_fixed_factor(dev, "eth_aclk", "cpu", 0, 1, 4);
clks[ARTPEC6_CLK_DMA_ACLK] =
clk_register_fixed_factor(dev, "dma_aclk", "cpu", 0, 1, 4);
clks[ARTPEC6_CLK_PTP_REF] =
clk_register_fixed_rate(dev, "ptp_ref", sys_refclk_name, 0,
100000000);
clks[ARTPEC6_CLK_SD_PCLK] =
clk_register_fixed_rate(dev, "sd_pclk", sys_refclk_name, 0,
100000000);
clks[ARTPEC6_CLK_SD_IMCLK] =
clk_register_fixed_rate(dev, "sd_imclk", sys_refclk_name, 0,
100000000);
clks[ARTPEC6_CLK_I2S_HST] =
clk_register_fixed_factor(dev, "i2s_hst", "cpu", 0, 1, 8);
for (i = 0; i < NUM_I2S_CLOCKS; ++i) {
if (i2s_refclk_name && frac_clk_name[i]) {
i2s_mux_parents[0] = frac_clk_name[i];
i2s_mux_parents[1] = i2s_refclk_name;
clks[i2s_clk_indexes[i]] =
clk_register_mux(dev, i2s_clk_names[i],
i2s_mux_parents, 2,
CLK_SET_RATE_NO_REPARENT |
CLK_SET_RATE_PARENT,
clkdata->syscon_base + 0x14, i, 1,
0, &clkdata->i2scfg_lock);
} else if (frac_clk_name[i]) {
/* Lock the mux for internal clock reference. */
muxreg = readl(clkdata->syscon_base + 0x14);
muxreg &= ~BIT(i);
writel(muxreg, clkdata->syscon_base + 0x14);
clks[i2s_clk_indexes[i]] =
clk_register_fixed_factor(dev, i2s_clk_names[i],
frac_clk_name[i], 0, 1,
1);
} else if (i2s_refclk_name) {
/* Lock the mux for external clock reference. */
muxreg = readl(clkdata->syscon_base + 0x14);
muxreg |= BIT(i);
writel(muxreg, clkdata->syscon_base + 0x14);
clks[i2s_clk_indexes[i]] =
clk_register_fixed_factor(dev, i2s_clk_names[i],
i2s_refclk_name, 0, 1, 1);
}
}
clks[ARTPEC6_CLK_I2C] =
clk_register_fixed_rate(dev, "i2c", sys_refclk_name, 0, 100000000);
clks[ARTPEC6_CLK_SYS_TIMER] =
clk_register_fixed_rate(dev, "timer", sys_refclk_name, 0,
100000000);
clks[ARTPEC6_CLK_FRACDIV_IN] =
clk_register_fixed_rate(dev, "fracdiv_in", sys_refclk_name, 0,
600000000);
for (i = 0; i < ARTPEC6_CLK_NUMCLOCKS; ++i) {
if (IS_ERR(clks[i]) && PTR_ERR(clks[i]) != -EPROBE_DEFER) {
dev_err(dev,
"Failed to register clock at index %d err=%ld\n",
i, PTR_ERR(clks[i]));
err = PTR_ERR(clks[i]);
}
}
return err;
}
static const struct of_device_id artpec_clkctrl_of_match[] = {
{ .compatible = "axis,artpec6-clkctrl" },
{}
};
static struct platform_driver artpec6_clkctrl_driver = {
.probe = artpec6_clkctrl_probe,
.driver = {
.name = "artpec6_clkctrl",
.of_match_table = artpec_clkctrl_of_match,
},
};
builtin_platform_driver(artpec6_clkctrl_driver);

1
drivers/clk/axs10x/Makefile Normal file
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@ -0,0 +1 @@
obj-y += i2s_pll_clock.o

228
drivers/clk/axs10x/i2s_pll_clock.c Normal file
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@ -0,0 +1,228 @@
/*
* Synopsys AXS10X SDP I2S PLL clock driver
*
* Copyright (C) 2016 Synopsys
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/clk-provider.h>
#include <linux/err.h>
#include <linux/device.h>
#include <linux/of_address.h>
#include <linux/slab.h>
#include <linux/of.h>
/* PLL registers addresses */
#define PLL_IDIV_REG 0x0
#define PLL_FBDIV_REG 0x4
#define PLL_ODIV0_REG 0x8
#define PLL_ODIV1_REG 0xC
struct i2s_pll_cfg {
unsigned int rate;
unsigned int idiv;
unsigned int fbdiv;
unsigned int odiv0;
unsigned int odiv1;
};
static const struct i2s_pll_cfg i2s_pll_cfg_27m[] = {
/* 27 Mhz */
{ 1024000, 0x104, 0x451, 0x10E38, 0x2000 },
{ 1411200, 0x104, 0x596, 0x10D35, 0x2000 },
{ 1536000, 0x208, 0xA28, 0x10B2C, 0x2000 },
{ 2048000, 0x82, 0x451, 0x10E38, 0x2000 },
{ 2822400, 0x82, 0x596, 0x10D35, 0x2000 },
{ 3072000, 0x104, 0xA28, 0x10B2C, 0x2000 },
{ 2116800, 0x82, 0x3CF, 0x10C30, 0x2000 },
{ 2304000, 0x104, 0x79E, 0x10B2C, 0x2000 },
{ 0, 0, 0, 0, 0 },
};
static const struct i2s_pll_cfg i2s_pll_cfg_28m[] = {
/* 28.224 Mhz */
{ 1024000, 0x82, 0x105, 0x107DF, 0x2000 },
{ 1411200, 0x28A, 0x1, 0x10001, 0x2000 },
{ 1536000, 0xA28, 0x187, 0x10042, 0x2000 },
{ 2048000, 0x41, 0x105, 0x107DF, 0x2000 },
{ 2822400, 0x145, 0x1, 0x10001, 0x2000 },
{ 3072000, 0x514, 0x187, 0x10042, 0x2000 },
{ 2116800, 0x514, 0x42, 0x10001, 0x2000 },
{ 2304000, 0x619, 0x82, 0x10001, 0x2000 },
{ 0, 0, 0, 0, 0 },
};
struct i2s_pll_clk {
void __iomem *base;
struct clk_hw hw;
struct device *dev;
};
static inline void i2s_pll_write(struct i2s_pll_clk *clk, unsigned int reg,
unsigned int val)
{
writel_relaxed(val, clk->base + reg);
}
static inline unsigned int i2s_pll_read(struct i2s_pll_clk *clk,
unsigned int reg)
{
return readl_relaxed(clk->base + reg);
}
static inline struct i2s_pll_clk *to_i2s_pll_clk(struct clk_hw *hw)
{
return container_of(hw, struct i2s_pll_clk, hw);
}
static inline unsigned int i2s_pll_get_value(unsigned int val)
{
return (val & 0x3F) + ((val >> 6) & 0x3F);
}
static const struct i2s_pll_cfg *i2s_pll_get_cfg(unsigned long prate)
{
switch (prate) {
case 27000000:
return i2s_pll_cfg_27m;
case 28224000:
return i2s_pll_cfg_28m;
default:
return NULL;
}
}
static unsigned long i2s_pll_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct i2s_pll_clk *clk = to_i2s_pll_clk(hw);
unsigned int idiv, fbdiv, odiv;
idiv = i2s_pll_get_value(i2s_pll_read(clk, PLL_IDIV_REG));
fbdiv = i2s_pll_get_value(i2s_pll_read(clk, PLL_FBDIV_REG));
odiv = i2s_pll_get_value(i2s_pll_read(clk, PLL_ODIV0_REG));
return ((parent_rate / idiv) * fbdiv) / odiv;
}
static long i2s_pll_round_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *prate)
{
struct i2s_pll_clk *clk = to_i2s_pll_clk(hw);
const struct i2s_pll_cfg *pll_cfg = i2s_pll_get_cfg(*prate);
int i;
if (!pll_cfg) {
dev_err(clk->dev, "invalid parent rate=%ld\n", *prate);
return -EINVAL;
}
for (i = 0; pll_cfg[i].rate != 0; i++)
if (pll_cfg[i].rate == rate)
return rate;
return -EINVAL;
}
static int i2s_pll_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
struct i2s_pll_clk *clk = to_i2s_pll_clk(hw);
const struct i2s_pll_cfg *pll_cfg = i2s_pll_get_cfg(parent_rate);
int i;
if (!pll_cfg) {
dev_err(clk->dev, "invalid parent rate=%ld\n", parent_rate);
return -EINVAL;
}
for (i = 0; pll_cfg[i].rate != 0; i++) {
if (pll_cfg[i].rate == rate) {
i2s_pll_write(clk, PLL_IDIV_REG, pll_cfg[i].idiv);
i2s_pll_write(clk, PLL_FBDIV_REG, pll_cfg[i].fbdiv);
i2s_pll_write(clk, PLL_ODIV0_REG, pll_cfg[i].odiv0);
i2s_pll_write(clk, PLL_ODIV1_REG, pll_cfg[i].odiv1);
return 0;
}
}
dev_err(clk->dev, "invalid rate=%ld, parent_rate=%ld\n", rate,
parent_rate);
return -EINVAL;
}
static const struct clk_ops i2s_pll_ops = {
.recalc_rate = i2s_pll_recalc_rate,
.round_rate = i2s_pll_round_rate,
.set_rate = i2s_pll_set_rate,
};
static int i2s_pll_clk_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *node = dev->of_node;
const char *clk_name;
const char *parent_name;
struct clk *clk;
struct i2s_pll_clk *pll_clk;
struct clk_init_data init;
struct resource *mem;
pll_clk = devm_kzalloc(dev, sizeof(*pll_clk), GFP_KERNEL);
if (!pll_clk)
return -ENOMEM;
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
pll_clk->base = devm_ioremap_resource(dev, mem);
if (IS_ERR(pll_clk->base))
return PTR_ERR(pll_clk->base);
clk_name = node->name;
init.name = clk_name;
init.ops = &i2s_pll_ops;
parent_name = of_clk_get_parent_name(node, 0);
init.parent_names = &parent_name;
init.num_parents = 1;
pll_clk->hw.init = &init;
pll_clk->dev = dev;
clk = devm_clk_register(dev, &pll_clk->hw);
if (IS_ERR(clk)) {
dev_err(dev, "failed to register %s clock (%ld)\n",
clk_name, PTR_ERR(clk));
return PTR_ERR(clk);
}
return of_clk_add_provider(node, of_clk_src_simple_get, clk);
}
static int i2s_pll_clk_remove(struct platform_device *pdev)
{
of_clk_del_provider(pdev->dev.of_node);
return 0;
}
static const struct of_device_id i2s_pll_clk_id[] = {
{ .compatible = "snps,axs10x-i2s-pll-clock", },
{ },
};
MODULE_DEVICE_TABLE(of, i2s_pll_clk_id);
static struct platform_driver i2s_pll_clk_driver = {
.driver = {
.name = "axs10x-i2s-pll-clock",
.of_match_table = i2s_pll_clk_id,
},
.probe = i2s_pll_clk_probe,
.remove = i2s_pll_clk_remove,
};
module_platform_driver(i2s_pll_clk_driver);
MODULE_AUTHOR("Jose Abreu <joabreu@synopsys.com>");
MODULE_DESCRIPTION("Synopsys AXS10X SDP I2S PLL Clock Driver");
MODULE_LICENSE("GPL v2");

1215
drivers/clk/bcm/clk-bcm2835.c
View File

File diff suppressed because it is too large Load Diff

3
drivers/clk/bcm/clk-kona-setup.c
View File

@ -577,7 +577,8 @@ static u32 *parent_process(const char *clocks[],
* selector is not required, but we allocate space for the
* array anyway to keep things simple.
*/
parent_names = kmalloc(parent_count * sizeof(parent_names), GFP_KERNEL);
parent_names = kmalloc_array(parent_count, sizeof(*parent_names),
GFP_KERNEL);
if (!parent_names) {
pr_err("%s: error allocating %u parent names\n", __func__,
parent_count);

19
drivers/clk/clk-clps711x.c
View File

@ -107,16 +107,15 @@ static struct clps711x_clk * __init _clps711x_clk_init(void __iomem *base,
writel(tmp, base + CLPS711X_SYSCON1);
clps711x_clk->clks[CLPS711X_CLK_DUMMY] =
clk_register_fixed_rate(NULL, "dummy", NULL, CLK_IS_ROOT, 0);
clk_register_fixed_rate(NULL, "dummy", NULL, 0, 0);
clps711x_clk->clks[CLPS711X_CLK_CPU] =
clk_register_fixed_rate(NULL, "cpu", NULL, CLK_IS_ROOT, f_cpu);
clk_register_fixed_rate(NULL, "cpu", NULL, 0, f_cpu);
clps711x_clk->clks[CLPS711X_CLK_BUS] =
clk_register_fixed_rate(NULL, "bus", NULL, CLK_IS_ROOT, f_bus);
clk_register_fixed_rate(NULL, "bus", NULL, 0, f_bus);
clps711x_clk->clks[CLPS711X_CLK_PLL] =
clk_register_fixed_rate(NULL, "pll", NULL, CLK_IS_ROOT, f_pll);
clk_register_fixed_rate(NULL, "pll", NULL, 0, f_pll);
clps711x_clk->clks[CLPS711X_CLK_TIMERREF] =
clk_register_fixed_rate(NULL, "timer_ref", NULL, CLK_IS_ROOT,
f_tim);
clk_register_fixed_rate(NULL, "timer_ref", NULL, 0, f_tim);
clps711x_clk->clks[CLPS711X_CLK_TIMER1] =
clk_register_divider_table(NULL, "timer1", "timer_ref", 0,
base + CLPS711X_SYSCON1, 5, 1, 0,
@ -126,10 +125,9 @@ static struct clps711x_clk * __init _clps711x_clk_init(void __iomem *base,
base + CLPS711X_SYSCON1, 7, 1, 0,
timer_div_table, &clps711x_clk->lock);
clps711x_clk->clks[CLPS711X_CLK_PWM] =
clk_register_fixed_rate(NULL, "pwm", NULL, CLK_IS_ROOT, f_pwm);
clk_register_fixed_rate(NULL, "pwm", NULL, 0, f_pwm);
clps711x_clk->clks[CLPS711X_CLK_SPIREF] =
clk_register_fixed_rate(NULL, "spi_ref", NULL, CLK_IS_ROOT,
f_spi);
clk_register_fixed_rate(NULL, "spi_ref", NULL, 0, f_spi);
clps711x_clk->clks[CLPS711X_CLK_SPI] =
clk_register_divider_table(NULL, "spi", "spi_ref", 0,
base + CLPS711X_SYSCON1, 16, 2, 0,
@ -137,8 +135,7 @@ static struct clps711x_clk * __init _clps711x_clk_init(void __iomem *base,
clps711x_clk->clks[CLPS711X_CLK_UART] =
clk_register_fixed_factor(NULL, "uart", "bus", 0, 1, 10);
clps711x_clk->clks[CLPS711X_CLK_TICK] =
clk_register_fixed_rate(NULL, "tick", NULL, CLK_IS_ROOT, 64);
clk_register_fixed_rate(NULL, "tick", NULL, 0, 64);
for (i = 0; i < CLPS711X_CLK_MAX; i++)
if (IS_ERR(clps711x_clk->clks[i]))
pr_err("clk %i: register failed with %ld\n",

93
drivers/clk/clk-composite.c
View File

@ -151,6 +151,33 @@ static int clk_composite_set_rate(struct clk_hw *hw, unsigned long rate,
return rate_ops->set_rate(rate_hw, rate, parent_rate);
}
static int clk_composite_set_rate_and_parent(struct clk_hw *hw,
unsigned long rate,
unsigned long parent_rate,
u8 index)
{
struct clk_composite *composite = to_clk_composite(hw);
const struct clk_ops *rate_ops = composite->rate_ops;
const struct clk_ops *mux_ops = composite->mux_ops;
struct clk_hw *rate_hw = composite->rate_hw;
struct clk_hw *mux_hw = composite->mux_hw;
unsigned long temp_rate;
__clk_hw_set_clk(rate_hw, hw);
__clk_hw_set_clk(mux_hw, hw);
temp_rate = rate_ops->recalc_rate(rate_hw, parent_rate);
if (temp_rate > rate) {
rate_ops->set_rate(rate_hw, rate, parent_rate);
mux_ops->set_parent(mux_hw, index);
} else {
mux_ops->set_parent(mux_hw, index);
rate_ops->set_rate(rate_hw, rate, parent_rate);
}
return 0;
}
static int clk_composite_is_enabled(struct clk_hw *hw)
{
struct clk_composite *composite = to_clk_composite(hw);
@ -184,17 +211,18 @@ static void clk_composite_disable(struct clk_hw *hw)
gate_ops->disable(gate_hw);
}
struct clk *clk_register_composite(struct device *dev, const char *name,
struct clk_hw *clk_hw_register_composite(struct device *dev, const char *name,
const char * const *parent_names, int num_parents,
struct clk_hw *mux_hw, const struct clk_ops *mux_ops,
struct clk_hw *rate_hw, const struct clk_ops *rate_ops,
struct clk_hw *gate_hw, const struct clk_ops *gate_ops,
unsigned long flags)
{
struct clk *clk;
struct clk_hw *hw;
struct clk_init_data init;
struct clk_composite *composite;
struct clk_ops *clk_composite_ops;
int ret;
composite = kzalloc(sizeof(*composite), GFP_KERNEL);
if (!composite)
@ -204,12 +232,13 @@ struct clk *clk_register_composite(struct device *dev, const char *name,
init.flags = flags | CLK_IS_BASIC;
init.parent_names = parent_names;
init.num_parents = num_parents;
hw = &composite->hw;
clk_composite_ops = &composite->ops;
if (mux_hw && mux_ops) {
if (!mux_ops->get_parent) {
clk = ERR_PTR(-EINVAL);
hw = ERR_PTR(-EINVAL);
goto err;
}
@ -224,7 +253,7 @@ struct clk *clk_register_composite(struct device *dev, const char *name,
if (rate_hw && rate_ops) {
if (!rate_ops->recalc_rate) {
clk = ERR_PTR(-EINVAL);
hw = ERR_PTR(-EINVAL);
goto err;
}
clk_composite_ops->recalc_rate = clk_composite_recalc_rate;
@ -250,10 +279,16 @@ struct clk *clk_register_composite(struct device *dev, const char *name,
composite->rate_ops = rate_ops;
}
if (mux_hw && mux_ops && rate_hw && rate_ops) {
if (mux_ops->set_parent && rate_ops->set_rate)
clk_composite_ops->set_rate_and_parent =
clk_composite_set_rate_and_parent;
}
if (gate_hw && gate_ops) {
if (!gate_ops->is_enabled || !gate_ops->enable ||
!gate_ops->disable) {
clk = ERR_PTR(-EINVAL);
hw = ERR_PTR(-EINVAL);
goto err;
}
@ -267,22 +302,56 @@ struct clk *clk_register_composite(struct device *dev, const char *name,
init.ops = clk_composite_ops;
composite->hw.init = &init;
clk = clk_register(dev, &composite->hw);
if (IS_ERR(clk))
ret = clk_hw_register(dev, hw);
if (ret) {
hw = ERR_PTR(ret);
goto err;
}
if (composite->mux_hw)
composite->mux_hw->clk = clk;
composite->mux_hw->clk = hw->clk;
if (composite->rate_hw)
composite->rate_hw->clk = clk;
composite->rate_hw->clk = hw->clk;
if (composite->gate_hw)
composite->gate_hw->clk = clk;
composite->gate_hw->clk = hw->clk;
return clk;
return hw;
err:
kfree(composite);
return clk;
return hw;
}
struct clk *clk_register_composite(struct device *dev, const char *name,
const char * const *parent_names, int num_parents,
struct clk_hw *mux_hw, const struct clk_ops *mux_ops,
struct clk_hw *rate_hw, const struct clk_ops *rate_ops,
struct clk_hw *gate_hw, const struct clk_ops *gate_ops,
unsigned long flags)
{
struct clk_hw *hw;
hw = clk_hw_register_composite(dev, name, parent_names, num_parents,
mux_hw, mux_ops, rate_hw, rate_ops, gate_hw, gate_ops,
flags);
if (IS_ERR(hw))
return ERR_CAST(hw);
return hw->clk;
}
void clk_unregister_composite(struct clk *clk)
{
struct clk_composite *composite;
struct clk_hw *hw;
hw = __clk_get_hw(clk);
if (!hw)
return;
composite = to_clk_composite(hw);
clk_unregister(clk);
kfree(composite);
}

91
drivers/clk/clk-divider.c
View File

@ -426,15 +426,16 @@ const struct clk_ops clk_divider_ro_ops = {
};
EXPORT_SYMBOL_GPL(clk_divider_ro_ops);
static struct clk *_register_divider(struct device *dev, const char *name,
static struct clk_hw *_register_divider(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
void __iomem *reg, u8 shift, u8 width,
u8 clk_divider_flags, const struct clk_div_table *table,
spinlock_t *lock)
{
struct clk_divider *div;
struct clk *clk;
struct clk_hw *hw;
struct clk_init_data init;
int ret;
if (clk_divider_flags & CLK_DIVIDER_HIWORD_MASK) {
if (width + shift > 16) {
@ -467,12 +468,14 @@ static struct clk *_register_divider(struct device *dev, const char *name,
div->table = table;
/* register the clock */
clk = clk_register(dev, &div->hw);
if (IS_ERR(clk))
hw = &div->hw;
ret = clk_hw_register(dev, hw);
if (ret) {
kfree(div);
hw = ERR_PTR(ret);
}
return clk;
return hw;
}
/**
@ -491,11 +494,38 @@ struct clk *clk_register_divider(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
void __iomem *reg, u8 shift, u8 width,
u8 clk_divider_flags, spinlock_t *lock)
{
struct clk_hw *hw;
hw = _register_divider(dev, name, parent_name, flags, reg, shift,
width, clk_divider_flags, NULL, lock);
if (IS_ERR(hw))
return ERR_CAST(hw);
return hw->clk;
}
EXPORT_SYMBOL_GPL(clk_register_divider);
/**
* clk_hw_register_divider - register a divider clock with the clock framework
* @dev: device registering this clock
* @name: name of this clock
* @parent_name: name of clock's parent
* @flags: framework-specific flags
* @reg: register address to adjust divider
* @shift: number of bits to shift the bitfield
* @width: width of the bitfield
* @clk_divider_flags: divider-specific flags for this clock
* @lock: shared register lock for this clock
*/
struct clk_hw *clk_hw_register_divider(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
void __iomem *reg, u8 shift, u8 width,
u8 clk_divider_flags, spinlock_t *lock)
{
return _register_divider(dev, name, parent_name, flags, reg, shift,
width, clk_divider_flags, NULL, lock);
}
EXPORT_SYMBOL_GPL(clk_register_divider);
EXPORT_SYMBOL_GPL(clk_hw_register_divider);
/**
* clk_register_divider_table - register a table based divider clock with
@ -516,11 +546,41 @@ struct clk *clk_register_divider_table(struct device *dev, const char *name,
void __iomem *reg, u8 shift, u8 width,
u8 clk_divider_flags, const struct clk_div_table *table,
spinlock_t *lock)
{
struct clk_hw *hw;
hw = _register_divider(dev, name, parent_name, flags, reg, shift,
width, clk_divider_flags, table, lock);
if (IS_ERR(hw))
return ERR_CAST(hw);
return hw->clk;
}
EXPORT_SYMBOL_GPL(clk_register_divider_table);
/**
* clk_hw_register_divider_table - register a table based divider clock with
* the clock framework
* @dev: device registering this clock
* @name: name of this clock
* @parent_name: name of clock's parent
* @flags: framework-specific flags
* @reg: register address to adjust divider
* @shift: number of bits to shift the bitfield
* @width: width of the bitfield
* @clk_divider_flags: divider-specific flags for this clock
* @table: array of divider/value pairs ending with a div set to 0
* @lock: shared register lock for this clock
*/
struct clk_hw *clk_hw_register_divider_table(struct device *dev,
const char *name, const char *parent_name, unsigned long flags,
void __iomem *reg, u8 shift, u8 width,
u8 clk_divider_flags, const struct clk_div_table *table,
spinlock_t *lock)
{
return _register_divider(dev, name, parent_name, flags, reg, shift,
width, clk_divider_flags, table, lock);
}
EXPORT_SYMBOL_GPL(clk_register_divider_table);
EXPORT_SYMBOL_GPL(clk_hw_register_divider_table);
void clk_unregister_divider(struct clk *clk)
{
@ -537,3 +597,18 @@ void clk_unregister_divider(struct clk *clk)
kfree(div);
}
EXPORT_SYMBOL_GPL(clk_unregister_divider);
/**
* clk_hw_unregister_divider - unregister a clk divider
* @hw: hardware-specific clock data to unregister
*/
void clk_hw_unregister_divider(struct clk_hw *hw)
{
struct clk_divider *div;
div = to_clk_divider(hw);
clk_hw_unregister(hw);
kfree(div);
}
EXPORT_SYMBOL_GPL(clk_hw_unregister_divider);

42
drivers/clk/clk-fixed-factor.c
View File

@ -68,13 +68,14 @@ const struct clk_ops clk_fixed_factor_ops = {
};
EXPORT_SYMBOL_GPL(clk_fixed_factor_ops);
struct clk *clk_register_fixed_factor(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
struct clk_hw *clk_hw_register_fixed_factor(struct device *dev,
const char *name, const char *parent_name, unsigned long flags,
unsigned int mult, unsigned int div)
{
struct clk_fixed_factor *fix;
struct clk_init_data init;
struct clk *clk;
struct clk_hw *hw;
int ret;
fix = kmalloc(sizeof(*fix), GFP_KERNEL);
if (!fix)
@ -91,12 +92,28 @@ struct clk *clk_register_fixed_factor(struct device *dev, const char *name,
init.parent_names = &parent_name;
init.num_parents = 1;
clk = clk_register(dev, &fix->hw);
if (IS_ERR(clk))
hw = &fix->hw;
ret = clk_hw_register(dev, hw);
if (ret) {
kfree(fix);
hw = ERR_PTR(ret);
}
return clk;
return hw;
}
EXPORT_SYMBOL_GPL(clk_hw_register_fixed_factor);
struct clk *clk_register_fixed_factor(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
unsigned int mult, unsigned int div)
{
struct clk_hw *hw;
hw = clk_hw_register_fixed_factor(dev, name, parent_name, flags, mult,
div);
if (IS_ERR(hw))
return ERR_CAST(hw);
return hw->clk;
}
EXPORT_SYMBOL_GPL(clk_register_fixed_factor);
@ -113,6 +130,17 @@ void clk_unregister_fixed_factor(struct clk *clk)
}
EXPORT_SYMBOL_GPL(clk_unregister_fixed_factor);
void clk_hw_unregister_fixed_factor(struct clk_hw *hw)
{
struct clk_fixed_factor *fix;
fix = to_clk_fixed_factor(hw);
clk_hw_unregister(hw);
kfree(fix);
}
EXPORT_SYMBOL_GPL(clk_hw_unregister_fixed_factor);
#ifdef CONFIG_OF
/**
* of_fixed_factor_clk_setup() - Setup function for simple fixed factor clock

44
drivers/clk/clk-fixed-rate.c
View File

@ -45,8 +45,8 @@ const struct clk_ops clk_fixed_rate_ops = {
EXPORT_SYMBOL_GPL(clk_fixed_rate_ops);
/**
* clk_register_fixed_rate_with_accuracy - register fixed-rate clock with the
* clock framework
* clk_hw_register_fixed_rate_with_accuracy - register fixed-rate clock with
* the clock framework
* @dev: device that is registering this clock
* @name: name of this clock
* @parent_name: name of clock's parent
@ -54,13 +54,14 @@ EXPORT_SYMBOL_GPL(clk_fixed_rate_ops);
* @fixed_rate: non-adjustable clock rate
* @fixed_accuracy: non-adjustable clock rate
*/
struct clk *clk_register_fixed_rate_with_accuracy(struct device *dev,
struct clk_hw *clk_hw_register_fixed_rate_with_accuracy(struct device *dev,
const char *name, const char *parent_name, unsigned long flags,
unsigned long fixed_rate, unsigned long fixed_accuracy)
{
struct clk_fixed_rate *fixed;
struct clk *clk;
struct clk_hw *hw;
struct clk_init_data init;
int ret;
/* allocate fixed-rate clock */
fixed = kzalloc(sizeof(*fixed), GFP_KERNEL);
@ -79,22 +80,49 @@ struct clk *clk_register_fixed_rate_with_accuracy(struct device *dev,
fixed->hw.init = &init;
/* register the clock */
clk = clk_register(dev, &fixed->hw);
if (IS_ERR(clk))
hw = &fixed->hw;
ret = clk_hw_register(dev, hw);
if (ret) {
kfree(fixed);
hw = ERR_PTR(ret);
}
return clk;
return hw;
}
EXPORT_SYMBOL_GPL(clk_hw_register_fixed_rate_with_accuracy);
struct clk *clk_register_fixed_rate_with_accuracy(struct device *dev,
const char *name, const char *parent_name, unsigned long flags,
unsigned long fixed_rate, unsigned long fixed_accuracy)
{
struct clk_hw *hw;
hw = clk_hw_register_fixed_rate_with_accuracy(dev, name, parent_name,
flags, fixed_rate, fixed_accuracy);
if (IS_ERR(hw))
return ERR_CAST(hw);
return hw->clk;
}
EXPORT_SYMBOL_GPL(clk_register_fixed_rate_with_accuracy);
/**
* clk_register_fixed_rate - register fixed-rate clock with the clock framework
* clk_hw_register_fixed_rate - register fixed-rate clock with the clock
* framework
* @dev: device that is registering this clock
* @name: name of this clock
* @parent_name: name of clock's parent
* @flags: framework-specific flags
* @fixed_rate: non-adjustable clock rate
*/
struct clk_hw *clk_hw_register_fixed_rate(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
unsigned long fixed_rate)
{
return clk_hw_register_fixed_rate_with_accuracy(dev, name, parent_name,
flags, fixed_rate, 0);
}
EXPORT_SYMBOL_GPL(clk_hw_register_fixed_rate);
struct clk *clk_register_fixed_rate(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
unsigned long fixed_rate)

40
drivers/clk/clk-fractional-divider.c
View File

@ -116,14 +116,15 @@ const struct clk_ops clk_fractional_divider_ops = {
};
EXPORT_SYMBOL_GPL(clk_fractional_divider_ops);
struct clk *clk_register_fractional_divider(struct device *dev,
struct clk_hw *clk_hw_register_fractional_divider(struct device *dev,
const char *name, const char *parent_name, unsigned long flags,
void __iomem *reg, u8 mshift, u8 mwidth, u8 nshift, u8 nwidth,
u8 clk_divider_flags, spinlock_t *lock)
{
struct clk_fractional_divider *fd;
struct clk_init_data init;
struct clk *clk;
struct clk_hw *hw;
int ret;
fd = kzalloc(sizeof(*fd), GFP_KERNEL);
if (!fd)
@ -146,10 +147,39 @@ struct clk *clk_register_fractional_divider(struct device *dev,
fd->lock = lock;
fd->hw.init = &init;
clk = clk_register(dev, &fd->hw);
if (IS_ERR(clk))
hw = &fd->hw;
ret = clk_hw_register(dev, hw);
if (ret) {
kfree(fd);
hw = ERR_PTR(ret);
}
return clk;
return hw;
}
EXPORT_SYMBOL_GPL(clk_hw_register_fractional_divider);
struct clk *clk_register_fractional_divider(struct device *dev,
const char *name, const char *parent_name, unsigned long flags,
void __iomem *reg, u8 mshift, u8 mwidth, u8 nshift, u8 nwidth,
u8 clk_divider_flags, spinlock_t *lock)
{
struct clk_hw *hw;
hw = clk_hw_register_fractional_divider(dev, name, parent_name, flags,
reg, mshift, mwidth, nshift, nwidth, clk_divider_flags,
lock);
if (IS_ERR(hw))
return ERR_CAST(hw);
return hw->clk;
}
EXPORT_SYMBOL_GPL(clk_register_fractional_divider);
void clk_hw_unregister_fractional_divider(struct clk_hw *hw)
{
struct clk_fractional_divider *fd;
fd = to_clk_fd(hw);
clk_hw_unregister(hw);
kfree(fd);
}

43
drivers/clk/clk-gate.c
View File

@ -110,7 +110,7 @@ const struct clk_ops clk_gate_ops = {
EXPORT_SYMBOL_GPL(clk_gate_ops);
/**
* clk_register_gate - register a gate clock with the clock framework
* clk_hw_register_gate - register a gate clock with the clock framework
* @dev: device that is registering this clock
* @name: name of this clock
* @parent_name: name of this clock's parent
@ -120,14 +120,15 @@ EXPORT_SYMBOL_GPL(clk_gate_ops);
* @clk_gate_flags: gate-specific flags for this clock
* @lock: shared register lock for this clock
*/
struct clk *clk_register_gate(struct device *dev, const char *name,
struct clk_hw *clk_hw_register_gate(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
void __iomem *reg, u8 bit_idx,
u8 clk_gate_flags, spinlock_t *lock)
{
struct clk_gate *gate;
struct clk *clk;
struct clk_hw *hw;
struct clk_init_data init;
int ret;
if (clk_gate_flags & CLK_GATE_HIWORD_MASK) {
if (bit_idx > 15) {
@ -154,12 +155,29 @@ struct clk *clk_register_gate(struct device *dev, const char *name,
gate->lock = lock;
gate->hw.init = &init;
clk = clk_register(dev, &gate->hw);
if (IS_ERR(clk))
hw = &gate->hw;
ret = clk_hw_register(dev, hw);
if (ret) {
kfree(gate);
hw = ERR_PTR(ret);
}
return clk;
return hw;
}
EXPORT_SYMBOL_GPL(clk_hw_register_gate);
struct clk *clk_register_gate(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
void __iomem *reg, u8 bit_idx,
u8 clk_gate_flags, spinlock_t *lock)
{
struct clk_hw *hw;
hw = clk_hw_register_gate(dev, name, parent_name, flags, reg,
bit_idx, clk_gate_flags, lock);
if (IS_ERR(hw))
return ERR_CAST(hw);
return hw->clk;
}
EXPORT_SYMBOL_GPL(clk_register_gate);
@ -178,3 +196,14 @@ void clk_unregister_gate(struct clk *clk)
kfree(gate);
}
EXPORT_SYMBOL_GPL(clk_unregister_gate);
void clk_hw_unregister_gate(struct clk_hw *hw)
{
struct clk_gate *gate;
gate = to_clk_gate(hw);
clk_hw_unregister(hw);
kfree(gate);
}
EXPORT_SYMBOL_GPL(clk_hw_unregister_gate);

52
drivers/clk/clk-gpio.c
View File

@ -94,13 +94,13 @@ const struct clk_ops clk_gpio_mux_ops = {
};
EXPORT_SYMBOL_GPL(clk_gpio_mux_ops);
static struct clk *clk_register_gpio(struct device *dev, const char *name,
static struct clk_hw *clk_register_gpio(struct device *dev, const char *name,
const char * const *parent_names, u8 num_parents, unsigned gpio,
bool active_low, unsigned long flags,
const struct clk_ops *clk_gpio_ops)
{
struct clk_gpio *clk_gpio;
struct clk *clk;
struct clk_hw *hw;
struct clk_init_data init = {};
unsigned long gpio_flags;
int err;
@ -141,24 +141,26 @@ static struct clk *clk_register_gpio(struct device *dev, const char *name,
clk_gpio->gpiod = gpio_to_desc(gpio);
clk_gpio->hw.init = &init;
hw = &clk_gpio->hw;
if (dev)
clk = devm_clk_register(dev, &clk_gpio->hw);
err = devm_clk_hw_register(dev, hw);
else
clk = clk_register(NULL, &clk_gpio->hw);
err = clk_hw_register(NULL, hw);
if (!IS_ERR(clk))
return clk;
if (!err)
return hw;
if (!dev) {
gpiod_put(clk_gpio->gpiod);
kfree(clk_gpio);
}
return clk;
return ERR_PTR(err);
}
/**
* clk_register_gpio_gate - register a gpio clock gate with the clock framework
* clk_hw_register_gpio_gate - register a gpio clock gate with the clock
* framework
* @dev: device that is registering this clock
* @name: name of this clock
* @parent_name: name of this clock's parent
@ -166,7 +168,7 @@ static struct clk *clk_register_gpio(struct device *dev, const char *name,
* @active_low: true if gpio should be set to 0 to enable clock
* @flags: clock flags
*/
struct clk *clk_register_gpio_gate(struct device *dev, const char *name,
struct clk_hw *clk_hw_register_gpio_gate(struct device *dev, const char *name,
const char *parent_name, unsigned gpio, bool active_low,
unsigned long flags)
{
@ -175,10 +177,24 @@ struct clk *clk_register_gpio_gate(struct device *dev, const char *name,
(parent_name ? 1 : 0), gpio, active_low, flags,
&clk_gpio_gate_ops);
}
EXPORT_SYMBOL_GPL(clk_hw_register_gpio_gate);
struct clk *clk_register_gpio_gate(struct device *dev, const char *name,
const char *parent_name, unsigned gpio, bool active_low,
unsigned long flags)
{
struct clk_hw *hw;
hw = clk_hw_register_gpio_gate(dev, name, parent_name, gpio, active_low,
flags);
if (IS_ERR(hw))
return ERR_CAST(hw);
return hw->clk;
}
EXPORT_SYMBOL_GPL(clk_register_gpio_gate);
/**
* clk_register_gpio_mux - register a gpio clock mux with the clock framework
* clk_hw_register_gpio_mux - register a gpio clock mux with the clock framework
* @dev: device that is registering this clock
* @name: name of this clock
* @parent_names: names of this clock's parents
@ -187,7 +203,7 @@ EXPORT_SYMBOL_GPL(clk_register_gpio_gate);
* @active_low: true if gpio should be set to 0 to enable clock
* @flags: clock flags
*/
struct clk *clk_register_gpio_mux(struct device *dev, const char *name,
struct clk_hw *clk_hw_register_gpio_mux(struct device *dev, const char *name,
const char * const *parent_names, u8 num_parents, unsigned gpio,
bool active_low, unsigned long flags)
{
@ -199,6 +215,20 @@ struct clk *clk_register_gpio_mux(struct device *dev, const char *name,
return clk_register_gpio(dev, name, parent_names, num_parents,
gpio, active_low, flags, &clk_gpio_mux_ops);
}
EXPORT_SYMBOL_GPL(clk_hw_register_gpio_mux);
struct clk *clk_register_gpio_mux(struct device *dev, const char *name,
const char * const *parent_names, u8 num_parents, unsigned gpio,
bool active_low, unsigned long flags)
{
struct clk_hw *hw;
hw = clk_hw_register_gpio_mux(dev, name, parent_names, num_parents,
gpio, active_low, flags);
if (IS_ERR(hw))
return ERR_CAST(hw);
return hw->clk;
}
EXPORT_SYMBOL_GPL(clk_register_gpio_mux);
static int gpio_clk_driver_probe(struct platform_device *pdev)

3
drivers/clk/clk-ls1x.c
View File

@ -88,8 +88,7 @@ void __init ls1x_clk_init(void)
{
struct clk *clk;
clk = clk_register_fixed_rate(NULL, "osc_33m_clk", NULL, CLK_IS_ROOT,
OSC);
clk = clk_register_fixed_rate(NULL, "osc_33m_clk", NULL, 0, OSC);
clk_register_clkdev(clk, "osc_33m_clk", NULL);
/* clock derived from 33 MHz OSC clk */

57
drivers/clk/clk-mux.c
View File

@ -113,16 +113,17 @@ const struct clk_ops clk_mux_ro_ops = {
};
EXPORT_SYMBOL_GPL(clk_mux_ro_ops);
struct clk *clk_register_mux_table(struct device *dev, const char *name,
struct clk_hw *clk_hw_register_mux_table(struct device *dev, const char *name,
const char * const *parent_names, u8 num_parents,
unsigned long flags,
void __iomem *reg, u8 shift, u32 mask,
u8 clk_mux_flags, u32 *table, spinlock_t *lock)
{
struct clk_mux *mux;
struct clk *clk;
struct clk_hw *hw;
struct clk_init_data init;
u8 width = 0;
int ret;
if (clk_mux_flags & CLK_MUX_HIWORD_MASK) {
width = fls(mask) - ffs(mask) + 1;
@ -157,12 +158,31 @@ struct clk *clk_register_mux_table(struct device *dev, const char *name,
mux->table = table;
mux->hw.init = &init;
clk = clk_register(dev, &mux->hw);
if (IS_ERR(clk))
hw = &mux->hw;
ret = clk_hw_register(dev, hw);
if (ret) {
kfree(mux);
hw = ERR_PTR(ret);
}
return clk;
return hw;
}
EXPORT_SYMBOL_GPL(clk_hw_register_mux_table);
struct clk *clk_register_mux_table(struct device *dev, const char *name,
const char * const *parent_names, u8 num_parents,
unsigned long flags,
void __iomem *reg, u8 shift, u32 mask,
u8 clk_mux_flags, u32 *table, spinlock_t *lock)
{
struct clk_hw *hw;
hw = clk_hw_register_mux_table(dev, name, parent_names, num_parents,
flags, reg, shift, mask, clk_mux_flags,
table, lock);
if (IS_ERR(hw))
return ERR_CAST(hw);
return hw->clk;
}
EXPORT_SYMBOL_GPL(clk_register_mux_table);
@ -180,6 +200,20 @@ struct clk *clk_register_mux(struct device *dev, const char *name,
}
EXPORT_SYMBOL_GPL(clk_register_mux);
struct clk_hw *clk_hw_register_mux(struct device *dev, const char *name,
const char * const *parent_names, u8 num_parents,
unsigned long flags,
void __iomem *reg, u8 shift, u8 width,
u8 clk_mux_flags, spinlock_t *lock)
{
u32 mask = BIT(width) - 1;
return clk_hw_register_mux_table(dev, name, parent_names, num_parents,
flags, reg, shift, mask, clk_mux_flags,
NULL, lock);
}
EXPORT_SYMBOL_GPL(clk_hw_register_mux);
void clk_unregister_mux(struct clk *clk)
{
struct clk_mux *mux;
@ -195,3 +229,14 @@ void clk_unregister_mux(struct clk *clk)
kfree(mux);
}
EXPORT_SYMBOL_GPL(clk_unregister_mux);
void clk_hw_unregister_mux(struct clk_hw *hw)
{
struct clk_mux *mux;
mux = to_clk_mux(hw);
clk_hw_unregister(hw);
kfree(mux);
}
EXPORT_SYMBOL_GPL(clk_hw_unregister_mux);

3
drivers/clk/clk-nspire.c
View File

@ -125,8 +125,7 @@ static void __init nspire_clk_setup(struct device_node *node,
of_property_read_string(node, "clock-output-names", &clk_name);
clk = clk_register_fixed_rate(NULL, clk_name, NULL, CLK_IS_ROOT,
info.base_clock);
clk = clk_register_fixed_rate(NULL, clk_name, NULL, 0, info.base_clock);
if (!IS_ERR(clk))
of_clk_add_provider(node, of_clk_src_simple_get, clk);
else

195
drivers/clk/clk-oxnas.c Normal file
View File

@ -0,0 +1,195 @@
/*
* Copyright (C) 2010 Broadcom
* Copyright (C) 2012 Stephen Warren
* Copyright (C) 2016 Neil Armstrong <narmstrong@baylibre.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/clk-provider.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/stringify.h>
#include <linux/regmap.h>
#include <linux/mfd/syscon.h>
/* Standard regmap gate clocks */
struct clk_oxnas {
struct clk_hw hw;
signed char bit;
struct regmap *regmap;
};
/* Regmap offsets */
#define CLK_STAT_REGOFFSET 0x24
#define CLK_SET_REGOFFSET 0x2c
#define CLK_CLR_REGOFFSET 0x30
static inline struct clk_oxnas *to_clk_oxnas(struct clk_hw *hw)
{
return container_of(hw, struct clk_oxnas, hw);
}
static int oxnas_clk_is_enabled(struct clk_hw *hw)
{
struct clk_oxnas *std = to_clk_oxnas(hw);
int ret;
unsigned int val;
ret = regmap_read(std->regmap, CLK_STAT_REGOFFSET, &val);
if (ret < 0)
return ret;
return val & BIT(std->bit);
}
static int oxnas_clk_enable(struct clk_hw *hw)
{
struct clk_oxnas *std = to_clk_oxnas(hw);
regmap_write(std->regmap, CLK_SET_REGOFFSET, BIT(std->bit));
return 0;
}
static void oxnas_clk_disable(struct clk_hw *hw)
{
struct clk_oxnas *std = to_clk_oxnas(hw);
regmap_write(std->regmap, CLK_CLR_REGOFFSET, BIT(std->bit));
}
static const struct clk_ops oxnas_clk_ops = {
.enable = oxnas_clk_enable,
.disable = oxnas_clk_disable,
.is_enabled = oxnas_clk_is_enabled,
};
static const char *const oxnas_clk_parents[] = {
"oscillator",
};
static const char *const eth_parents[] = {
"gmacclk",
};
#define DECLARE_STD_CLKP(__clk, __parent) \
static const struct clk_init_data clk_##__clk##_init = { \
.name = __stringify(__clk), \
.ops = &oxnas_clk_ops, \
.parent_names = __parent, \
.num_parents = ARRAY_SIZE(__parent), \
}
#define DECLARE_STD_CLK(__clk) DECLARE_STD_CLKP(__clk, oxnas_clk_parents)
/* Hardware Bit - Clock association */
struct clk_oxnas_init_data {
unsigned long bit;
const struct clk_init_data *clk_init;
};
/* Clk init data declaration */
DECLARE_STD_CLK(leon);
DECLARE_STD_CLK(dma_sgdma);
DECLARE_STD_CLK(cipher);
DECLARE_STD_CLK(sata);
DECLARE_STD_CLK(audio);
DECLARE_STD_CLK(usbmph);
DECLARE_STD_CLKP(etha, eth_parents);
DECLARE_STD_CLK(pciea);
DECLARE_STD_CLK(nand);
/* Table index is clock indice */
static const struct clk_oxnas_init_data clk_oxnas_init[] = {
[0] = {0, &clk_leon_init},
[1] = {1, &clk_dma_sgdma_init},
[2] = {2, &clk_cipher_init},
/* Skip & Do not touch to DDR clock */
[3] = {4, &clk_sata_init},
[4] = {5, &clk_audio_init},
[5] = {6, &clk_usbmph_init},
[6] = {7, &clk_etha_init},
[7] = {8, &clk_pciea_init},
[8] = {9, &clk_nand_init},
};
struct clk_oxnas_data {
struct clk_oxnas clk_oxnas[ARRAY_SIZE(clk_oxnas_init)];
struct clk_onecell_data onecell_data[ARRAY_SIZE(clk_oxnas_init)];
struct clk *clks[ARRAY_SIZE(clk_oxnas_init)];
};
static int oxnas_stdclk_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct clk_oxnas_data *clk_oxnas;
struct regmap *regmap;
int i;
clk_oxnas = devm_kzalloc(&pdev->dev, sizeof(*clk_oxnas), GFP_KERNEL);
if (!clk_oxnas)
return -ENOMEM;
regmap = syscon_node_to_regmap(of_get_parent(np));
if (!regmap) {
dev_err(&pdev->dev, "failed to have parent regmap\n");
return -EINVAL;
}
for (i = 0; i < ARRAY_SIZE(clk_oxnas_init); i++) {
struct clk_oxnas *_clk;
_clk = &clk_oxnas->clk_oxnas[i];
_clk->bit = clk_oxnas_init[i].bit;
_clk->hw.init = clk_oxnas_init[i].clk_init;
_clk->regmap = regmap;
clk_oxnas->clks[i] =
devm_clk_register(&pdev->dev, &_clk->hw);
if (WARN_ON(IS_ERR(clk_oxnas->clks[i])))
return PTR_ERR(clk_oxnas->clks[i]);
}
clk_oxnas->onecell_data->clks = clk_oxnas->clks;
clk_oxnas->onecell_data->clk_num = ARRAY_SIZE(clk_oxnas_init);
return of_clk_add_provider(np, of_clk_src_onecell_get,
clk_oxnas->onecell_data);
}
static int oxnas_stdclk_remove(struct platform_device *pdev)
{
of_clk_del_provider(pdev->dev.of_node);
return 0;
}
static const struct of_device_id oxnas_stdclk_dt_ids[] = {
{ .compatible = "oxsemi,ox810se-stdclk" },
{ }
};
MODULE_DEVICE_TABLE(of, oxnas_stdclk_dt_ids);
static struct platform_driver oxnas_stdclk_driver = {
.probe = oxnas_stdclk_probe,
.remove = oxnas_stdclk_remove,
.driver = {
.name = "oxnas-stdclk",
.of_match_table = oxnas_stdclk_dt_ids,
},
};
module_platform_driver(oxnas_stdclk_driver);

4
drivers/clk/clk-palmas.c
View File

@ -132,7 +132,7 @@ static const struct palmas_clks_of_match_data palmas_of_clk32kg = {
.init = {
.name = "clk32kg",
.ops = &palmas_clks_ops,
.flags = CLK_IS_ROOT | CLK_IGNORE_UNUSED,
.flags = CLK_IGNORE_UNUSED,
},
.desc = {
.clk_name = "clk32kg",
@ -148,7 +148,7 @@ static const struct palmas_clks_of_match_data palmas_of_clk32kgaudio = {
.init = {
.name = "clk32kgaudio",
.ops = &palmas_clks_ops,
.flags = CLK_IS_ROOT | CLK_IGNORE_UNUSED,
.flags = CLK_IGNORE_UNUSED,
},
.desc = {
.clk_name = "clk32kgaudio",

5
drivers/clk/clk-qoriq.c
View File

@ -869,14 +869,15 @@ static void __init core_mux_init(struct device_node *np)
}
}
static struct clk *sysclk_from_fixed(struct device_node *node, const char *name)
static struct clk __init
*sysclk_from_fixed(struct device_node *node, const char *name)
{
u32 rate;
if (of_property_read_u32(node, "clock-frequency", &rate))
return ERR_PTR(-ENODEV);
return clk_register_fixed_rate(NULL, name, NULL, CLK_IS_ROOT, rate);
return clk_register_fixed_rate(NULL, name, NULL, 0, rate);
}
static struct clk *sysclk_from_parent(const char *name)

1
drivers/clk/clk-rk808.c
View File

@ -106,7 +106,6 @@ static int rk808_clkout_probe(struct platform_device *pdev)
if (!clk_table)
return -ENOMEM;
init.flags = CLK_IS_ROOT;
init.parent_names = NULL;
init.num_parents = 0;
init.name = "rk808-clkout1";

73
drivers/clk/clk-tango4.c
View File

@ -4,17 +4,19 @@
#include <linux/init.h>
#include <linux/io.h>
static struct clk *out[2];
static struct clk_onecell_data clk_data = { out, 2 };
#define CLK_COUNT 4 /* cpu_clk, sys_clk, usb_clk, sdio_clk */
static struct clk *clks[CLK_COUNT];
static struct clk_onecell_data clk_data = { clks, CLK_COUNT };
#define SYSCLK_CTRL 0x20
#define CPUCLK_CTRL 0x24
#define LEGACY_DIV 0x3c
#define SYSCLK_DIV 0x20
#define CPUCLK_DIV 0x24
#define DIV_BYPASS BIT(23)
#define PLL_N(val) (((val) >> 0) & 0x7f)
#define PLL_K(val) (((val) >> 13) & 0x7)
#define PLL_M(val) (((val) >> 16) & 0x7)
#define DIV_INDEX(val) (((val) >> 8) & 0xf)
/*** CLKGEN_PLL ***/
#define extract_pll_n(val) ((val >> 0) & ((1u << 7) - 1))
#define extract_pll_k(val) ((val >> 13) & ((1u << 3) - 1))
#define extract_pll_m(val) ((val >> 16) & ((1u << 3) - 1))
#define extract_pll_isel(val) ((val >> 24) & ((1u << 3) - 1))
static void __init make_pll(int idx, const char *parent, void __iomem *base)
{
@ -22,40 +24,61 @@ static void __init make_pll(int idx, const char *parent, void __iomem *base)
u32 val, mul, div;
sprintf(name, "pll%d", idx);
val = readl_relaxed(base + idx*8);
mul = PLL_N(val) + 1;
div = (PLL_M(val) + 1) << PLL_K(val);
val = readl(base + idx * 8);
mul = extract_pll_n(val) + 1;
div = (extract_pll_m(val) + 1) << extract_pll_k(val);
clk_register_fixed_factor(NULL, name, parent, 0, mul, div);
if (extract_pll_isel(val) != 1)
panic("%s: input not set to XTAL_IN\n", name);
}
static int __init get_div(void __iomem *base)
static void __init make_cd(int idx, void __iomem *base)
{
u8 sysclk_tab[16] = { 2, 4, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4 };
int idx = DIV_INDEX(readl_relaxed(base + LEGACY_DIV));
char name[8];
u32 val, mul, div;
return sysclk_tab[idx];
sprintf(name, "cd%d", idx);
val = readl(base + idx * 8);
mul = 1 << 27;
div = (2 << 27) + val;
clk_register_fixed_factor(NULL, name, "pll2", 0, mul, div);
if (val > 0xf0000000)
panic("%s: unsupported divider %x\n", name, val);
}
static void __init tango4_clkgen_setup(struct device_node *np)
{
int div, ret;
struct clk **pp = clk_data.clks;
void __iomem *base = of_iomap(np, 0);
const char *parent = of_clk_get_parent_name(np, 0);
if (!base)
panic("%s: invalid address\n", np->full_name);
panic("%s: invalid address\n", np->name);
if (readl(base + CPUCLK_DIV) & DIV_BYPASS)
panic("%s: unsupported cpuclk setup\n", np->name);
if (readl(base + SYSCLK_DIV) & DIV_BYPASS)
panic("%s: unsupported sysclk setup\n", np->name);
writel(0x100, base + CPUCLK_DIV); /* disable frequency ramping */
make_pll(0, parent, base);
make_pll(1, parent, base);
make_pll(2, parent, base);
make_cd(2, base + 0x80);
make_cd(6, base + 0x80);
out[0] = clk_register_divider(NULL, "cpuclk", "pll0", 0,
base + CPUCLK_CTRL, 8, 8, CLK_DIVIDER_ONE_BASED, NULL);
pp[0] = clk_register_divider(NULL, "cpu_clk", "pll0", 0,
base + CPUCLK_DIV, 8, 8, CLK_DIVIDER_ONE_BASED, NULL);
pp[1] = clk_register_fixed_factor(NULL, "sys_clk", "pll1", 0, 1, 4);
pp[2] = clk_register_fixed_factor(NULL, "usb_clk", "cd2", 0, 1, 2);
pp[3] = clk_register_fixed_factor(NULL, "sdio_clk", "cd6", 0, 1, 2);
div = readl_relaxed(base + SYSCLK_CTRL) & BIT(23) ? get_div(base) : 4;
out[1] = clk_register_fixed_factor(NULL, "sysclk", "pll1", 0, 1, div);
if (IS_ERR(pp[0]) || IS_ERR(pp[1]) || IS_ERR(pp[2]) || IS_ERR(pp[3]))
panic("%s: clk registration failed\n", np->name);
ret = of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
if (IS_ERR(out[0]) || IS_ERR(out[1]) || ret < 0)
panic("%s: clk registration failed\n", np->full_name);
if (of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data))
panic("%s: clk provider registration failed\n", np->name);
}
CLK_OF_DECLARE(tango4_clkgen, "sigma,tango4-clkgen", tango4_clkgen_setup);

1
drivers/clk/clk-twl6040.c
View File

@ -74,7 +74,6 @@ static const struct clk_ops twl6040_mcpdm_ops = {
static struct clk_init_data wm831x_clkout_init = {
.name = "mcpdm_fclk",
.ops = &twl6040_mcpdm_ops,
.flags = CLK_IS_ROOT,
};
static int twl6040_clk_probe(struct platform_device *pdev)

1
drivers/clk/clk-wm831x.c
View File

@ -58,7 +58,6 @@ static const struct clk_ops wm831x_xtal_ops = {
static struct clk_init_data wm831x_xtal_init = {
.name = "xtal",
.ops = &wm831x_xtal_ops,
.flags = CLK_IS_ROOT,
};
static const unsigned long wm831x_fll_auto_rates[] = {

2
drivers/clk/clk-xgene.c
View File

@ -198,7 +198,7 @@ static void xgene_pllclk_init(struct device_node *np, enum xgene_pll_type pll_ty
of_property_read_string(np, "clock-output-names", &clk_name);
clk = xgene_register_clk_pll(NULL,
clk_name, of_clk_get_parent_name(np, 0),
CLK_IS_ROOT, reg, 0, pll_type, &clk_lock,
0, reg, 0, pll_type, &clk_lock,
version);
if (!IS_ERR(clk)) {
of_clk_add_provider(np, of_clk_src_simple_get, clk);

222
drivers/clk/clk.c
View File

@ -574,6 +574,9 @@ static void clk_core_unprepare(struct clk_core *core)
if (WARN_ON(core->prepare_count == 0))
return;
if (WARN_ON(core->prepare_count == 1 && core->flags & CLK_IS_CRITICAL))
return;
if (--core->prepare_count > 0)
return;
@ -679,6 +682,9 @@ static void clk_core_disable(struct clk_core *core)
if (WARN_ON(core->enable_count == 0))
return;
if (WARN_ON(core->enable_count == 1 && core->flags & CLK_IS_CRITICAL))
return;
if (--core->enable_count > 0)
return;
@ -2397,6 +2403,16 @@ static int __clk_core_init(struct clk_core *core)
if (core->ops->init)
core->ops->init(core->hw);
if (core->flags & CLK_IS_CRITICAL) {
unsigned long flags;
clk_core_prepare(core);
flags = clk_enable_lock();
clk_core_enable(core);
clk_enable_unlock(flags);
}
kref_init(&core->ref);
out:
clk_prepare_unlock();
@ -2536,6 +2552,22 @@ fail_out:
}
EXPORT_SYMBOL_GPL(clk_register);
/**
* clk_hw_register - register a clk_hw and return an error code
* @dev: device that is registering this clock
* @hw: link to hardware-specific clock data
*
* clk_hw_register is the primary interface for populating the clock tree with
* new clock nodes. It returns an integer equal to zero indicating success or
* less than zero indicating failure. Drivers must test for an error code after
* calling clk_hw_register().
*/
int clk_hw_register(struct device *dev, struct clk_hw *hw)
{
return PTR_ERR_OR_ZERO(clk_register(dev, hw));
}
EXPORT_SYMBOL_GPL(clk_hw_register);
/* Free memory allocated for a clock. */
static void __clk_release(struct kref *ref)
{
@ -2637,11 +2669,26 @@ unlock:
}
EXPORT_SYMBOL_GPL(clk_unregister);
/**
* clk_hw_unregister - unregister a currently registered clk_hw
* @hw: hardware-specific clock data to unregister
*/
void clk_hw_unregister(struct clk_hw *hw)
{
clk_unregister(hw->clk);
}
EXPORT_SYMBOL_GPL(clk_hw_unregister);
static void devm_clk_release(struct device *dev, void *res)
{
clk_unregister(*(struct clk **)res);
}
static void devm_clk_hw_release(struct device *dev, void *res)
{
clk_hw_unregister(*(struct clk_hw **)res);
}
/**
* devm_clk_register - resource managed clk_register()
* @dev: device that is registering this clock
@ -2672,6 +2719,36 @@ struct clk *devm_clk_register(struct device *dev, struct clk_hw *hw)
}
EXPORT_SYMBOL_GPL(devm_clk_register);
/**
* devm_clk_hw_register - resource managed clk_hw_register()
* @dev: device that is registering this clock
* @hw: link to hardware-specific clock data
*
* Managed clk_hw_register(). Clocks registered by this function are
* automatically clk_hw_unregister()ed on driver detach. See clk_hw_register()
* for more information.
*/
int devm_clk_hw_register(struct device *dev, struct clk_hw *hw)
{
struct clk_hw **hwp;
int ret;
hwp = devres_alloc(devm_clk_hw_release, sizeof(*hwp), GFP_KERNEL);
if (!hwp)
return -ENOMEM;
ret = clk_hw_register(dev, hw);
if (!ret) {
*hwp = hw;
devres_add(dev, hwp);
} else {
devres_free(hwp);
}
return ret;
}
EXPORT_SYMBOL_GPL(devm_clk_hw_register);
static int devm_clk_match(struct device *dev, void *res, void *data)
{
struct clk *c = res;
@ -2680,6 +2757,15 @@ static int devm_clk_match(struct device *dev, void *res, void *data)
return c == data;
}
static int devm_clk_hw_match(struct device *dev, void *res, void *data)
{
struct clk_hw *hw = res;
if (WARN_ON(!hw))
return 0;
return hw == data;
}
/**
* devm_clk_unregister - resource managed clk_unregister()
* @clk: clock to unregister
@ -2694,6 +2780,22 @@ void devm_clk_unregister(struct device *dev, struct clk *clk)
}
EXPORT_SYMBOL_GPL(devm_clk_unregister);
/**
* devm_clk_hw_unregister - resource managed clk_hw_unregister()
* @dev: device that is unregistering the hardware-specific clock data
* @hw: link to hardware-specific clock data
*
* Unregister a clk_hw registered with devm_clk_hw_register(). Normally
* this function will not need to be called and the resource management
* code will ensure that the resource is freed.
*/
void devm_clk_hw_unregister(struct device *dev, struct clk_hw *hw)
{
WARN_ON(devres_release(dev, devm_clk_hw_release, devm_clk_hw_match,
hw));
}
EXPORT_SYMBOL_GPL(devm_clk_hw_unregister);
/*
* clkdev helpers
*/
@ -2855,6 +2957,7 @@ struct of_clk_provider {
struct device_node *node;
struct clk *(*get)(struct of_phandle_args *clkspec, void *data);
struct clk_hw *(*get_hw)(struct of_phandle_args *clkspec, void *data);
void *data;
};
@ -2871,6 +2974,12 @@ struct clk *of_clk_src_simple_get(struct of_phandle_args *clkspec,
}
EXPORT_SYMBOL_GPL(of_clk_src_simple_get);
struct clk_hw *of_clk_hw_simple_get(struct of_phandle_args *clkspec, void *data)
{
return data;
}
EXPORT_SYMBOL_GPL(of_clk_hw_simple_get);
struct clk *of_clk_src_onecell_get(struct of_phandle_args *clkspec, void *data)
{
struct clk_onecell_data *clk_data = data;
@ -2885,6 +2994,21 @@ struct clk *of_clk_src_onecell_get(struct of_phandle_args *clkspec, void *data)
}
EXPORT_SYMBOL_GPL(of_clk_src_onecell_get);
struct clk_hw *
of_clk_hw_onecell_get(struct of_phandle_args *clkspec, void *data)
{
struct clk_hw_onecell_data *hw_data = data;
unsigned int idx = clkspec->args[0];
if (idx >= hw_data->num) {
pr_err("%s: invalid index %u\n", __func__, idx);
return ERR_PTR(-EINVAL);
}
return hw_data->hws[idx];
}
EXPORT_SYMBOL_GPL(of_clk_hw_onecell_get);
/**
* of_clk_add_provider() - Register a clock provider for a node
* @np: Device node pointer associated with clock provider
@ -2920,6 +3044,41 @@ int of_clk_add_provider(struct device_node *np,
}
EXPORT_SYMBOL_GPL(of_clk_add_provider);
/**
* of_clk_add_hw_provider() - Register a clock provider for a node
* @np: Device node pointer associated with clock provider
* @get: callback for decoding clk_hw
* @data: context pointer for @get callback.
*/
int of_clk_add_hw_provider(struct device_node *np,
struct clk_hw *(*get)(struct of_phandle_args *clkspec,
void *data),
void *data)
{
struct of_clk_provider *cp;
int ret;
cp = kzalloc(sizeof(*cp), GFP_KERNEL);
if (!cp)
return -ENOMEM;
cp->node = of_node_get(np);
cp->data = data;
cp->get_hw = get;
mutex_lock(&of_clk_mutex);
list_add(&cp->link, &of_clk_providers);
mutex_unlock(&of_clk_mutex);
pr_debug("Added clk_hw provider from %s\n", np->full_name);
ret = of_clk_set_defaults(np, true);
if (ret < 0)
of_clk_del_provider(np);
return ret;
}
EXPORT_SYMBOL_GPL(of_clk_add_hw_provider);
/**
* of_clk_del_provider() - Remove a previously registered clock provider
* @np: Device node pointer associated with clock provider
@ -2941,11 +3100,32 @@ void of_clk_del_provider(struct device_node *np)
}
EXPORT_SYMBOL_GPL(of_clk_del_provider);
static struct clk_hw *
__of_clk_get_hw_from_provider(struct of_clk_provider *provider,
struct of_phandle_args *clkspec)
{
struct clk *clk;
struct clk_hw *hw = ERR_PTR(-EPROBE_DEFER);
if (provider->get_hw) {
hw = provider->get_hw(clkspec, provider->data);
} else if (provider->get) {
clk = provider->get(clkspec, provider->data);
if (!IS_ERR(clk))
hw = __clk_get_hw(clk);
else
hw = ERR_CAST(clk);
}
return hw;
}
struct clk *__of_clk_get_from_provider(struct of_phandle_args *clkspec,
const char *dev_id, const char *con_id)
{
struct of_clk_provider *provider;
struct clk *clk = ERR_PTR(-EPROBE_DEFER);
struct clk_hw *hw = ERR_PTR(-EPROBE_DEFER);
if (!clkspec)
return ERR_PTR(-EINVAL);
@ -2954,10 +3134,9 @@ struct clk *__of_clk_get_from_provider(struct of_phandle_args *clkspec,
mutex_lock(&of_clk_mutex);
list_for_each_entry(provider, &of_clk_providers, link) {
if (provider->node == clkspec->np)
clk = provider->get(clkspec, provider->data);
if (!IS_ERR(clk)) {
clk = __clk_create_clk(__clk_get_hw(clk), dev_id,
con_id);
hw = __of_clk_get_hw_from_provider(provider, clkspec);
if (!IS_ERR(hw)) {
clk = __clk_create_clk(hw, dev_id, con_id);
if (!IS_ERR(clk) && !__clk_get(clk)) {
__clk_free_clk(clk);
@ -3126,6 +3305,41 @@ static int parent_ready(struct device_node *np)
}
}
/**
* of_clk_detect_critical() - set CLK_IS_CRITICAL flag from Device Tree
* @np: Device node pointer associated with clock provider
* @index: clock index
* @flags: pointer to clk_core->flags
*
* Detects if the clock-critical property exists and, if so, sets the
* corresponding CLK_IS_CRITICAL flag.
*
* Do not use this function. It exists only for legacy Device Tree
* bindings, such as the one-clock-per-node style that are outdated.
* Those bindings typically put all clock data into .dts and the Linux
* driver has no clock data, thus making it impossible to set this flag
* correctly from the driver. Only those drivers may call
* of_clk_detect_critical from their setup functions.
*
* Return: error code or zero on success
*/
int of_clk_detect_critical(struct device_node *np,
int index, unsigned long *flags)
{
struct property *prop;
const __be32 *cur;
uint32_t idx;
if (!np || !flags)
return -EINVAL;
of_property_for_each_u32(np, "clock-critical", prop, cur, idx)
if (index == idx)
*flags |= CLK_IS_CRITICAL;
return 0;
}
/**
* of_clk_init() - Scan and init clock providers from the DT
* @matches: array of compatible values and init functions for providers.

75
drivers/clk/clkdev.c
View File

@ -301,6 +301,20 @@ clkdev_alloc(struct clk *clk, const char *con_id, const char *dev_fmt, ...)
}
EXPORT_SYMBOL(clkdev_alloc);
struct clk_lookup *
clkdev_hw_alloc(struct clk_hw *hw, const char *con_id, const char *dev_fmt, ...)
{
struct clk_lookup *cl;
va_list ap;
va_start(ap, dev_fmt);
cl = vclkdev_alloc(hw, con_id, dev_fmt, ap);
va_end(ap);
return cl;
}
EXPORT_SYMBOL(clkdev_hw_alloc);
/**
* clkdev_create - allocate and add a clkdev lookup structure
* @clk: struct clk to associate with all clk_lookups
@ -324,6 +338,29 @@ struct clk_lookup *clkdev_create(struct clk *clk, const char *con_id,
}
EXPORT_SYMBOL_GPL(clkdev_create);
/**
* clkdev_hw_create - allocate and add a clkdev lookup structure
* @hw: struct clk_hw to associate with all clk_lookups
* @con_id: connection ID string on device
* @dev_fmt: format string describing device name
*
* Returns a clk_lookup structure, which can be later unregistered and
* freed.
*/
struct clk_lookup *clkdev_hw_create(struct clk_hw *hw, const char *con_id,
const char *dev_fmt, ...)
{
struct clk_lookup *cl;
va_list ap;
va_start(ap, dev_fmt);
cl = vclkdev_create(hw, con_id, dev_fmt, ap);
va_end(ap);
return cl;
}
EXPORT_SYMBOL_GPL(clkdev_hw_create);
int clk_add_alias(const char *alias, const char *alias_dev_name,
const char *con_id, struct device *dev)
{
@ -404,28 +441,28 @@ int clk_register_clkdev(struct clk *clk, const char *con_id,
EXPORT_SYMBOL(clk_register_clkdev);
/**
* clk_register_clkdevs - register a set of clk_lookup for a struct clk
* @clk: struct clk to associate with all clk_lookups
* @cl: array of clk_lookup structures with con_id and dev_id pre-initialized
* @num: number of clk_lookup structures to register
* clk_hw_register_clkdev - register one clock lookup for a struct clk_hw
* @hw: struct clk_hw to associate with all clk_lookups
* @con_id: connection ID string on device
* @dev_id: format string describing device name
*
* To make things easier for mass registration, we detect error clks
* from a previous clk_register() call, and return the error code for
* those. This is to permit this function to be called immediately
* after clk_register().
* con_id or dev_id may be NULL as a wildcard, just as in the rest of
* clkdev.
*/
int clk_register_clkdevs(struct clk *clk, struct clk_lookup *cl, size_t num)
int clk_hw_register_clkdev(struct clk_hw *hw, const char *con_id,
const char *dev_id)
{
unsigned i;
struct clk_lookup *cl;
if (IS_ERR(clk))
return PTR_ERR(clk);
/*
* Since dev_id can be NULL, and NULL is handled specially, we must
* pass it as either a NULL format string, or with "%s".
*/
if (dev_id)
cl = __clk_register_clkdev(hw, con_id, "%s", dev_id);
else
cl = __clk_register_clkdev(hw, con_id, NULL);
for (i = 0; i < num; i++, cl++) {
cl->clk_hw = __clk_get_hw(clk);
__clkdev_add(cl);
}
return 0;
return cl ? 0 : -ENOMEM;
}
EXPORT_SYMBOL(clk_register_clkdevs);
EXPORT_SYMBOL(clk_hw_register_clkdev);

15
drivers/clk/hisilicon/Kconfig
View File

@ -1,3 +1,11 @@
config COMMON_CLK_HI3519
tristate "Hi3519 Clock Driver"
depends on ARCH_HISI || COMPILE_TEST
select RESET_HISI
default ARCH_HISI
help
Build the clock driver for hi3519.
config COMMON_CLK_HI6220
bool "Hi6220 Clock Driver"
depends on ARCH_HISI || COMPILE_TEST
@ -5,6 +13,13 @@ config COMMON_CLK_HI6220
help
Build the Hisilicon Hi6220 clock driver based on the common clock framework.
config RESET_HISI
bool "HiSilicon Reset Controller Driver"
depends on ARCH_HISI || COMPILE_TEST
select RESET_CONTROLLER
help
Build reset controller driver for HiSilicon device chipsets.
config STUB_CLK_HI6220
bool "Hi6220 Stub Clock Driver"
depends on COMMON_CLK_HI6220 && MAILBOX

2
drivers/clk/hisilicon/Makefile
View File

@ -7,5 +7,7 @@ obj-y += clk.o clkgate-separated.o clkdivider-hi6220.o
obj-$(CONFIG_ARCH_HI3xxx) += clk-hi3620.o
obj-$(CONFIG_ARCH_HIP04) += clk-hip04.o
obj-$(CONFIG_ARCH_HIX5HD2) += clk-hix5hd2.o
obj-$(CONFIG_COMMON_CLK_HI3519) += clk-hi3519.o
obj-$(CONFIG_COMMON_CLK_HI6220) += clk-hi6220.o
obj-$(CONFIG_RESET_HISI) += reset.o
obj-$(CONFIG_STUB_CLK_HI6220) += clk-hi6220-stub.o

131
drivers/clk/hisilicon/clk-hi3519.c Normal file
View File

@ -0,0 +1,131 @@
/*
* Hi3519 Clock Driver
*
* Copyright (c) 2015-2016 HiSilicon Technologies Co., Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <dt-bindings/clock/hi3519-clock.h>
#include <linux/clk-provider.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include "clk.h"
#include "reset.h"
#define HI3519_INNER_CLK_OFFSET 64
#define HI3519_FIXED_24M 65
#define HI3519_FIXED_50M 66
#define HI3519_FIXED_75M 67
#define HI3519_FIXED_125M 68
#define HI3519_FIXED_150M 69
#define HI3519_FIXED_200M 70
#define HI3519_FIXED_250M 71
#define HI3519_FIXED_300M 72
#define HI3519_FIXED_400M 73
#define HI3519_FMC_MUX 74
#define HI3519_NR_CLKS 128
static const struct hisi_fixed_rate_clock hi3519_fixed_rate_clks[] = {
{ HI3519_FIXED_24M, "24m", NULL, 0, 24000000, },
{ HI3519_FIXED_50M, "50m", NULL, 0, 50000000, },
{ HI3519_FIXED_75M, "75m", NULL, 0, 75000000, },
{ HI3519_FIXED_125M, "125m", NULL, 0, 125000000, },
{ HI3519_FIXED_150M, "150m", NULL, 0, 150000000, },
{ HI3519_FIXED_200M, "200m", NULL, 0, 200000000, },
{ HI3519_FIXED_250M, "250m", NULL, 0, 250000000, },
{ HI3519_FIXED_300M, "300m", NULL, 0, 300000000, },
{ HI3519_FIXED_400M, "400m", NULL, 0, 400000000, },
};
static const char *const fmc_mux_p[] = {
"24m", "75m", "125m", "150m", "200m", "250m", "300m", "400m", };
static u32 fmc_mux_table[] = {0, 1, 2, 3, 4, 5, 6, 7};
static const struct hisi_mux_clock hi3519_mux_clks[] = {
{ HI3519_FMC_MUX, "fmc_mux", fmc_mux_p, ARRAY_SIZE(fmc_mux_p),
CLK_SET_RATE_PARENT, 0xc0, 2, 3, 0, fmc_mux_table, },
};
static const struct hisi_gate_clock hi3519_gate_clks[] = {
{ HI3519_FMC_CLK, "clk_fmc", "fmc_mux",
CLK_SET_RATE_PARENT, 0xc0, 1, 0, },
{ HI3519_UART0_CLK, "clk_uart0", "24m",
CLK_SET_RATE_PARENT, 0xe4, 20, 0, },
{ HI3519_UART1_CLK, "clk_uart1", "24m",
CLK_SET_RATE_PARENT, 0xe4, 21, 0, },
{ HI3519_UART2_CLK, "clk_uart2", "24m",
CLK_SET_RATE_PARENT, 0xe4, 22, 0, },
{ HI3519_UART3_CLK, "clk_uart3", "24m",
CLK_SET_RATE_PARENT, 0xe4, 23, 0, },
{ HI3519_UART4_CLK, "clk_uart4", "24m",
CLK_SET_RATE_PARENT, 0xe4, 24, 0, },
{ HI3519_SPI0_CLK, "clk_spi0", "50m",
CLK_SET_RATE_PARENT, 0xe4, 16, 0, },
{ HI3519_SPI1_CLK, "clk_spi1", "50m",
CLK_SET_RATE_PARENT, 0xe4, 17, 0, },
{ HI3519_SPI2_CLK, "clk_spi2", "50m",
CLK_SET_RATE_PARENT, 0xe4, 18, 0, },
};
static int hi3519_clk_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct hisi_clock_data *clk_data;
struct hisi_reset_controller *rstc;
rstc = hisi_reset_init(np);
if (!rstc)
return -ENOMEM;
clk_data = hisi_clk_init(np, HI3519_NR_CLKS);
if (!clk_data) {
hisi_reset_exit(rstc);
return -ENODEV;
}
hisi_clk_register_fixed_rate(hi3519_fixed_rate_clks,
ARRAY_SIZE(hi3519_fixed_rate_clks),
clk_data);
hisi_clk_register_mux(hi3519_mux_clks, ARRAY_SIZE(hi3519_mux_clks),
clk_data);
hisi_clk_register_gate(hi3519_gate_clks,
ARRAY_SIZE(hi3519_gate_clks), clk_data);
return 0;
}
static const struct of_device_id hi3519_clk_match_table[] = {
{ .compatible = "hisilicon,hi3519-crg" },
{ }
};
MODULE_DEVICE_TABLE(of, hi3519_clk_match_table);
static struct platform_driver hi3519_clk_driver = {
.probe = hi3519_clk_probe,
.driver = {
.name = "hi3519-clk",
.of_match_table = hi3519_clk_match_table,
},
};
static int __init hi3519_clk_init(void)
{
return platform_driver_register(&hi3519_clk_driver);
}
core_initcall(hi3519_clk_init);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("HiSilicon Hi3519 Clock Driver");

23
drivers/clk/hisilicon/clk.c
View File

@ -37,7 +37,7 @@
static DEFINE_SPINLOCK(hisi_clk_lock);
struct hisi_clock_data __init *hisi_clk_init(struct device_node *np,
struct hisi_clock_data *hisi_clk_init(struct device_node *np,
int nr_clks)
{
struct hisi_clock_data *clk_data;
@ -71,8 +71,9 @@ err_data:
err:
return NULL;
}
EXPORT_SYMBOL_GPL(hisi_clk_init);
void __init hisi_clk_register_fixed_rate(struct hisi_fixed_rate_clock *clks,
void hisi_clk_register_fixed_rate(const struct hisi_fixed_rate_clock *clks,
int nums, struct hisi_clock_data *data)
{
struct clk *clk;
@ -91,8 +92,9 @@ void __init hisi_clk_register_fixed_rate(struct hisi_fixed_rate_clock *clks,
data->clk_data.clks[clks[i].id] = clk;
}
}
EXPORT_SYMBOL_GPL(hisi_clk_register_fixed_rate);
void __init hisi_clk_register_fixed_factor(struct hisi_fixed_factor_clock *clks,
void hisi_clk_register_fixed_factor(const struct hisi_fixed_factor_clock *clks,
int nums,
struct hisi_clock_data *data)
{
@ -112,8 +114,9 @@ void __init hisi_clk_register_fixed_factor(struct hisi_fixed_factor_clock *clks,
data->clk_data.clks[clks[i].id] = clk;
}
}
EXPORT_SYMBOL_GPL(hisi_clk_register_fixed_factor);
void __init hisi_clk_register_mux(struct hisi_mux_clock *clks,
void hisi_clk_register_mux(const struct hisi_mux_clock *clks,
int nums, struct hisi_clock_data *data)
{
struct clk *clk;
@ -141,8 +144,9 @@ void __init hisi_clk_register_mux(struct hisi_mux_clock *clks,
data->clk_data.clks[clks[i].id] = clk;
}
}
EXPORT_SYMBOL_GPL(hisi_clk_register_mux);
void __init hisi_clk_register_divider(struct hisi_divider_clock *clks,
void hisi_clk_register_divider(const struct hisi_divider_clock *clks,
int nums, struct hisi_clock_data *data)
{
struct clk *clk;
@ -170,8 +174,9 @@ void __init hisi_clk_register_divider(struct hisi_divider_clock *clks,
data->clk_data.clks[clks[i].id] = clk;
}
}
EXPORT_SYMBOL_GPL(hisi_clk_register_divider);
void __init hisi_clk_register_gate(struct hisi_gate_clock *clks,
void hisi_clk_register_gate(const struct hisi_gate_clock *clks,
int nums, struct hisi_clock_data *data)
{
struct clk *clk;
@ -198,8 +203,9 @@ void __init hisi_clk_register_gate(struct hisi_gate_clock *clks,
data->clk_data.clks[clks[i].id] = clk;
}
}
EXPORT_SYMBOL_GPL(hisi_clk_register_gate);
void __init hisi_clk_register_gate_sep(struct hisi_gate_clock *clks,
void hisi_clk_register_gate_sep(const struct hisi_gate_clock *clks,
int nums, struct hisi_clock_data *data)
{
struct clk *clk;
@ -226,8 +232,9 @@ void __init hisi_clk_register_gate_sep(struct hisi_gate_clock *clks,
data->clk_data.clks[clks[i].id] = clk;
}
}
EXPORT_SYMBOL_GPL(hisi_clk_register_gate_sep);
void __init hi6220_clk_register_divider(struct hi6220_divider_clock *clks,
void __init hi6220_clk_register_divider(const struct hi6220_divider_clock *clks,
int nums, struct hisi_clock_data *data)
{
struct clk *clk;

14
drivers/clk/hisilicon/clk.h
View File

@ -111,18 +111,18 @@ struct clk *hi6220_register_clkdiv(struct device *dev, const char *name,
u8 shift, u8 width, u32 mask_bit, spinlock_t *lock);
struct hisi_clock_data *hisi_clk_init(struct device_node *, int);
void hisi_clk_register_fixed_rate(struct hisi_fixed_rate_clock *,
void hisi_clk_register_fixed_rate(const struct hisi_fixed_rate_clock *,
int, struct hisi_clock_data *);
void hisi_clk_register_fixed_factor(struct hisi_fixed_factor_clock *,
void hisi_clk_register_fixed_factor(const struct hisi_fixed_factor_clock *,
int, struct hisi_clock_data *);
void hisi_clk_register_mux(struct hisi_mux_clock *, int,
void hisi_clk_register_mux(const struct hisi_mux_clock *, int,
struct hisi_clock_data *);
void hisi_clk_register_divider(struct hisi_divider_clock *,
void hisi_clk_register_divider(const struct hisi_divider_clock *,
int, struct hisi_clock_data *);
void hisi_clk_register_gate(struct hisi_gate_clock *,
void hisi_clk_register_gate(const struct hisi_gate_clock *,
int, struct hisi_clock_data *);
void hisi_clk_register_gate_sep(struct hisi_gate_clock *,
void hisi_clk_register_gate_sep(const struct hisi_gate_clock *,
int, struct hisi_clock_data *);
void hi6220_clk_register_divider(struct hi6220_divider_clock *,
void hi6220_clk_register_divider(const struct hi6220_divider_clock *,
int, struct hisi_clock_data *);
#endif /* __HISI_CLK_H */

134
drivers/clk/hisilicon/reset.c Normal file
View File

@ -0,0 +1,134 @@
/*
* Hisilicon Reset Controller Driver
*
* Copyright (c) 2015-2016 HiSilicon Technologies Co., Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/io.h>
#include <linux/of_address.h>
#include <linux/reset-controller.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include "reset.h"
#define HISI_RESET_BIT_MASK 0x1f
#define HISI_RESET_OFFSET_SHIFT 8
#define HISI_RESET_OFFSET_MASK 0xffff00
struct hisi_reset_controller {
spinlock_t lock;
void __iomem *membase;
struct reset_controller_dev rcdev;
};
#define to_hisi_reset_controller(rcdev) \
container_of(rcdev, struct hisi_reset_controller, rcdev)
static int hisi_reset_of_xlate(struct reset_controller_dev *rcdev,
const struct of_phandle_args *reset_spec)
{
u32 offset;
u8 bit;
offset = (reset_spec->args[0] << HISI_RESET_OFFSET_SHIFT)
& HISI_RESET_OFFSET_MASK;
bit = reset_spec->args[1] & HISI_RESET_BIT_MASK;
return (offset | bit);
}
static int hisi_reset_assert(struct reset_controller_dev *rcdev,
unsigned long id)
{
struct hisi_reset_controller *rstc = to_hisi_reset_controller(rcdev);
unsigned long flags;
u32 offset, reg;
u8 bit;
offset = (id & HISI_RESET_OFFSET_MASK) >> HISI_RESET_OFFSET_SHIFT;
bit = id & HISI_RESET_BIT_MASK;
spin_lock_irqsave(&rstc->lock, flags);
reg = readl(rstc->membase + offset);
writel(reg | BIT(bit), rstc->membase + offset);
spin_unlock_irqrestore(&rstc->lock, flags);
return 0;
}
static int hisi_reset_deassert(struct reset_controller_dev *rcdev,
unsigned long id)
{
struct hisi_reset_controller *rstc = to_hisi_reset_controller(rcdev);
unsigned long flags;
u32 offset, reg;
u8 bit;
offset = (id & HISI_RESET_OFFSET_MASK) >> HISI_RESET_OFFSET_SHIFT;
bit = id & HISI_RESET_BIT_MASK;
spin_lock_irqsave(&rstc->lock, flags);
reg = readl(rstc->membase + offset);
writel(reg & ~BIT(bit), rstc->membase + offset);
spin_unlock_irqrestore(&rstc->lock, flags);
return 0;
}
static const struct reset_control_ops hisi_reset_ops = {
.assert = hisi_reset_assert,
.deassert = hisi_reset_deassert,
};
struct hisi_reset_controller *hisi_reset_init(struct device_node *np)
{
struct hisi_reset_controller *rstc;
rstc = kzalloc(sizeof(*rstc), GFP_KERNEL);
if (!rstc)
return NULL;
rstc->membase = of_iomap(np, 0);
if (!rstc->membase) {
kfree(rstc);
return NULL;
}
spin_lock_init(&rstc->lock);
rstc->rcdev.owner = THIS_MODULE;
rstc->rcdev.ops = &hisi_reset_ops;
rstc->rcdev.of_node = np;
rstc->rcdev.of_reset_n_cells = 2;
rstc->rcdev.of_xlate = hisi_reset_of_xlate;
reset_controller_register(&rstc->rcdev);
return rstc;
}
EXPORT_SYMBOL_GPL(hisi_reset_init);
void hisi_reset_exit(struct hisi_reset_controller *rstc)
{
reset_controller_unregister(&rstc->rcdev);
iounmap(rstc->membase);
kfree(rstc);
}
EXPORT_SYMBOL_GPL(hisi_reset_exit);

36
drivers/clk/hisilicon/reset.h Normal file
View File

@ -0,0 +1,36 @@
/*
* Copyright (c) 2015 HiSilicon Technologies Co., Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __HISI_RESET_H
#define __HISI_RESET_H
struct device_node;
struct hisi_reset_controller;
#ifdef CONFIG_RESET_CONTROLLER
struct hisi_reset_controller *hisi_reset_init(struct device_node *np);
void hisi_reset_exit(struct hisi_reset_controller *rstc);
#else
static inline hisi_reset_controller *hisi_reset_init(struct device_node *np)
{
return 0;
}
static inline void hisi_reset_exit(struct hisi_reset_controller *rstc)
{}
#endif
#endif /* __HISI_RESET_H */

7
drivers/clk/imx/clk-gate2.c
View File

@ -31,6 +31,7 @@ struct clk_gate2 {
struct clk_hw hw;
void __iomem *reg;
u8 bit_idx;
u8 cgr_val;
u8 flags;
spinlock_t *lock;
unsigned int *share_count;
@ -50,7 +51,8 @@ static int clk_gate2_enable(struct clk_hw *hw)
goto out;
reg = readl(gate->reg);
reg |= 3 << gate->bit_idx;
reg &= ~(3 << gate->bit_idx);
reg |= gate->cgr_val << gate->bit_idx;
writel(reg, gate->reg);
out:
@ -125,7 +127,7 @@ static struct clk_ops clk_gate2_ops = {
struct clk *clk_register_gate2(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
void __iomem *reg, u8 bit_idx,
void __iomem *reg, u8 bit_idx, u8 cgr_val,
u8 clk_gate2_flags, spinlock_t *lock,
unsigned int *share_count)
{
@ -140,6 +142,7 @@ struct clk *clk_register_gate2(struct device *dev, const char *name,
/* struct clk_gate2 assignments */
gate->reg = reg;
gate->bit_idx = bit_idx;
gate->cgr_val = cgr_val;
gate->flags = clk_gate2_flags;
gate->lock = lock;
gate->share_count = share_count;

4
drivers/clk/imx/clk-imx35.c
View File

@ -66,7 +66,7 @@ static const char *std_sel[] = {"ppll", "arm"};
static const char *ipg_per_sel[] = {"ahb_per_div", "arm_per_div"};
enum mx35_clks {
ckih, ckil, mpll, ppll, mpll_075, arm, hsp, hsp_div, hsp_sel, ahb, ipg,
ckih, mpll, ppll, mpll_075, arm, hsp, hsp_div, hsp_sel, ahb, ipg,
arm_per_div, ahb_per_div, ipg_per, uart_sel, uart_div, esdhc_sel,
esdhc1_div, esdhc2_div, esdhc3_div, spdif_sel, spdif_div_pre,
spdif_div_post, ssi_sel, ssi1_div_pre, ssi1_div_post, ssi2_div_pre,
@ -79,7 +79,7 @@ enum mx35_clks {
rtc_gate, rtic_gate, scc_gate, sdma_gate, spba_gate, spdif_gate,
ssi1_gate, ssi2_gate, uart1_gate, uart2_gate, uart3_gate, usbotg_gate,
wdog_gate, max_gate, admux_gate, csi_gate, csi_div, csi_sel, iim_gate,
gpu2d_gate, clk_max
gpu2d_gate, ckil, clk_max
};
static struct clk *clk[clk_max];

10
drivers/clk/imx/clk-imx6sx.c
View File

@ -134,6 +134,8 @@ static u32 share_count_esai;
static u32 share_count_ssi1;
static u32 share_count_ssi2;
static u32 share_count_ssi3;
static u32 share_count_sai1;
static u32 share_count_sai2;
static struct clk ** const uart_clks[] __initconst = {
&clks[IMX6SX_CLK_UART_IPG],
@ -469,10 +471,10 @@ static void __init imx6sx_clocks_init(struct device_node *ccm_node)
clks[IMX6SX_CLK_SSI3] = imx_clk_gate2_shared("ssi3", "ssi3_podf", base + 0x7c, 22, &share_count_ssi3);
clks[IMX6SX_CLK_UART_IPG] = imx_clk_gate2("uart_ipg", "ipg", base + 0x7c, 24);
clks[IMX6SX_CLK_UART_SERIAL] = imx_clk_gate2("uart_serial", "uart_podf", base + 0x7c, 26);
clks[IMX6SX_CLK_SAI1_IPG] = imx_clk_gate2("sai1_ipg", "ipg", base + 0x7c, 28);
clks[IMX6SX_CLK_SAI2_IPG] = imx_clk_gate2("sai2_ipg", "ipg", base + 0x7c, 30);
clks[IMX6SX_CLK_SAI1] = imx_clk_gate2("sai1", "ssi1_podf", base + 0x7c, 28);
clks[IMX6SX_CLK_SAI2] = imx_clk_gate2("sai2", "ssi2_podf", base + 0x7c, 30);
clks[IMX6SX_CLK_SAI1_IPG] = imx_clk_gate2_shared("sai1_ipg", "ipg", base + 0x7c, 28, &share_count_sai1);
clks[IMX6SX_CLK_SAI2_IPG] = imx_clk_gate2_shared("sai2_ipg", "ipg", base + 0x7c, 30, &share_count_sai2);
clks[IMX6SX_CLK_SAI1] = imx_clk_gate2_shared("sai1", "ssi1_podf", base + 0x7c, 28, &share_count_sai1);
clks[IMX6SX_CLK_SAI2] = imx_clk_gate2_shared("sai2", "ssi2_podf", base + 0x7c, 30, &share_count_sai2);
/* CCGR6 */
clks[IMX6SX_CLK_USBOH3] = imx_clk_gate2("usboh3", "ipg", base + 0x80, 0);

5
drivers/clk/imx/clk-imx7d.c
View File

@ -56,7 +56,7 @@ static const char *nand_usdhc_bus_sel[] = { "osc", "pll_sys_pfd2_270m_clk",
"pll_sys_pfd2_135m_clk", "pll_sys_pfd6_clk", "pll_enet_250m_clk",
"pll_audio_main_clk", };
static const char *ahb_channel_sel[] = { "osc", "pll_sys_pfd2_135m_clk",
static const char *ahb_channel_sel[] = { "osc", "pll_sys_pfd2_270m_clk",
"pll_dram_533m_clk", "pll_sys_pfd0_392m_clk",
"pll_enet_125m_clk", "pll_usb_main_clk", "pll_audio_main_clk",
"pll_video_main_clk", };
@ -342,7 +342,7 @@ static const char *clko1_sel[] = { "osc", "pll_sys_main_clk",
static const char *clko2_sel[] = { "osc", "pll_sys_main_240m_clk",
"pll_sys_pfd0_392m_clk", "pll_sys_pfd1_166m_clk", "pll_sys_pfd4_clk",
"pll_audio_main_clk", "pll_video_main_clk", "osc_32k_clk", };
"pll_audio_main_clk", "pll_video_main_clk", "ckil", };
static const char *lvds1_sel[] = { "pll_arm_main_clk",
"pll_sys_main_clk", "pll_sys_pfd0_392m_clk", "pll_sys_pfd1_332m_clk",
@ -382,6 +382,7 @@ static void __init imx7d_clocks_init(struct device_node *ccm_node)
clks[IMX7D_CLK_DUMMY] = imx_clk_fixed("dummy", 0);
clks[IMX7D_OSC_24M_CLK] = of_clk_get_by_name(ccm_node, "osc");
clks[IMX7D_CKIL] = of_clk_get_by_name(ccm_node, "ckil");
np = of_find_compatible_node(NULL, NULL, "fsl,imx7d-anatop");
base = of_iomap(np, 0);

9
drivers/clk/imx/clk-pllv3.c
View File

@ -44,6 +44,7 @@ struct clk_pllv3 {
u32 powerdown;
u32 div_mask;
u32 div_shift;
unsigned long ref_clock;
};
#define to_clk_pllv3(_hw) container_of(_hw, struct clk_pllv3, hw)
@ -286,7 +287,9 @@ static const struct clk_ops clk_pllv3_av_ops = {
static unsigned long clk_pllv3_enet_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
return 500000000;
struct clk_pllv3 *pll = to_clk_pllv3(hw);
return pll->ref_clock;
}
static const struct clk_ops clk_pllv3_enet_ops = {
@ -326,7 +329,11 @@ struct clk *imx_clk_pllv3(enum imx_pllv3_type type, const char *name,
break;
case IMX_PLLV3_ENET_IMX7:
pll->powerdown = IMX7_ENET_PLL_POWER;
pll->ref_clock = 1000000000;
ops = &clk_pllv3_enet_ops;
break;
case IMX_PLLV3_ENET:
pll->ref_clock = 500000000;
ops = &clk_pllv3_enet_ops;
break;
default:

60
drivers/clk/imx/clk-vf610.c
View File

@ -10,6 +10,7 @@
#include <linux/of_address.h>
#include <linux/clk.h>
#include <linux/syscore_ops.h>
#include <dt-bindings/clock/vf610-clock.h>
#include "clk.h"
@ -40,6 +41,7 @@
#define CCM_CCGR9 (ccm_base + 0x64)
#define CCM_CCGR10 (ccm_base + 0x68)
#define CCM_CCGR11 (ccm_base + 0x6c)
#define CCM_CCGRx(x) (CCM_CCGR0 + (x) * 4)
#define CCM_CMEOR0 (ccm_base + 0x70)
#define CCM_CMEOR1 (ccm_base + 0x74)
#define CCM_CMEOR2 (ccm_base + 0x78)
@ -115,10 +117,19 @@ static struct clk_div_table pll4_audio_div_table[] = {
static struct clk *clk[VF610_CLK_END];
static struct clk_onecell_data clk_data;
static u32 cscmr1;
static u32 cscmr2;
static u32 cscdr1;
static u32 cscdr2;
static u32 cscdr3;
static u32 ccgr[12];
static unsigned int const clks_init_on[] __initconst = {
VF610_CLK_SYS_BUS,
VF610_CLK_DDR_SEL,
VF610_CLK_DAP,
VF610_CLK_DDRMC,
VF610_CLK_WKPU,
};
static struct clk * __init vf610_get_fixed_clock(
@ -132,6 +143,43 @@ static struct clk * __init vf610_get_fixed_clock(
return clk;
};
static int vf610_clk_suspend(void)
{
int i;
cscmr1 = readl_relaxed(CCM_CSCMR1);
cscmr2 = readl_relaxed(CCM_CSCMR2);
cscdr1 = readl_relaxed(CCM_CSCDR1);
cscdr2 = readl_relaxed(CCM_CSCDR2);
cscdr3 = readl_relaxed(CCM_CSCDR3);
for (i = 0; i < 12; i++)
ccgr[i] = readl_relaxed(CCM_CCGRx(i));
return 0;
}
static void vf610_clk_resume(void)
{
int i;
writel_relaxed(cscmr1, CCM_CSCMR1);
writel_relaxed(cscmr2, CCM_CSCMR2);
writel_relaxed(cscdr1, CCM_CSCDR1);
writel_relaxed(cscdr2, CCM_CSCDR2);
writel_relaxed(cscdr3, CCM_CSCDR3);
for (i = 0; i < 12; i++)
writel_relaxed(ccgr[i], CCM_CCGRx(i));
}
static struct syscore_ops vf610_clk_syscore_ops = {
.suspend = vf610_clk_suspend,
.resume = vf610_clk_resume,
};
static void __init vf610_clocks_init(struct device_node *ccm_node)
{
struct device_node *np;
@ -233,6 +281,9 @@ static void __init vf610_clocks_init(struct device_node *ccm_node)
clk[VF610_CLK_PLL4_MAIN_DIV] = clk_register_divider_table(NULL, "pll4_audio_div", "pll4_audio", 0, CCM_CACRR, 6, 3, 0, pll4_audio_div_table, &imx_ccm_lock);
clk[VF610_CLK_PLL6_MAIN_DIV] = imx_clk_divider("pll6_video_div", "pll6_video", CCM_CACRR, 21, 1);
clk[VF610_CLK_DDRMC] = imx_clk_gate2_cgr("ddrmc", "ddr_sel", CCM_CCGR6, CCM_CCGRx_CGn(14), 0x2);
clk[VF610_CLK_WKPU] = imx_clk_gate2_cgr("wkpu", "ipg_bus", CCM_CCGR4, CCM_CCGRx_CGn(10), 0x2);
clk[VF610_CLK_USBPHY0] = imx_clk_gate("usbphy0", "pll3_usb_otg", PLL3_CTRL, 6);
clk[VF610_CLK_USBPHY1] = imx_clk_gate("usbphy1", "pll7_usb_host", PLL7_CTRL, 6);
@ -321,11 +372,14 @@ static void __init vf610_clocks_init(struct device_node *ccm_node)
clk[VF610_CLK_DCU0_SEL] = imx_clk_mux("dcu0_sel", CCM_CSCMR1, 28, 1, dcu_sels, 2);
clk[VF610_CLK_DCU0_EN] = imx_clk_gate("dcu0_en", "dcu0_sel", CCM_CSCDR3, 19);
clk[VF610_CLK_DCU0_DIV] = imx_clk_divider("dcu0_div", "dcu0_en", CCM_CSCDR3, 16, 3);
clk[VF610_CLK_DCU0] = imx_clk_gate2("dcu0", "dcu0_div", CCM_CCGR3, CCM_CCGRx_CGn(8));
clk[VF610_CLK_DCU0] = imx_clk_gate2("dcu0", "ipg_bus", CCM_CCGR3, CCM_CCGRx_CGn(8));
clk[VF610_CLK_DCU1_SEL] = imx_clk_mux("dcu1_sel", CCM_CSCMR1, 29, 1, dcu_sels, 2);
clk[VF610_CLK_DCU1_EN] = imx_clk_gate("dcu1_en", "dcu1_sel", CCM_CSCDR3, 23);
clk[VF610_CLK_DCU1_DIV] = imx_clk_divider("dcu1_div", "dcu1_en", CCM_CSCDR3, 20, 3);
clk[VF610_CLK_DCU1] = imx_clk_gate2("dcu1", "dcu1_div", CCM_CCGR9, CCM_CCGRx_CGn(8));
clk[VF610_CLK_DCU1] = imx_clk_gate2("dcu1", "ipg_bus", CCM_CCGR9, CCM_CCGRx_CGn(8));
clk[VF610_CLK_TCON0] = imx_clk_gate2("tcon0", "platform_bus", CCM_CCGR1, CCM_CCGRx_CGn(13));
clk[VF610_CLK_TCON1] = imx_clk_gate2("tcon1", "platform_bus", CCM_CCGR7, CCM_CCGRx_CGn(13));
clk[VF610_CLK_ESAI_SEL] = imx_clk_mux("esai_sel", CCM_CSCMR1, 20, 2, esai_sels, 4);
clk[VF610_CLK_ESAI_EN] = imx_clk_gate("esai_en", "esai_sel", CCM_CSCDR2, 30);
@ -409,6 +463,8 @@ static void __init vf610_clocks_init(struct device_node *ccm_node)
for (i = 0; i < ARRAY_SIZE(clks_init_on); i++)
clk_prepare_enable(clk[clks_init_on[i]]);
register_syscore_ops(&vf610_clk_syscore_ops);
/* Add the clocks to provider list */
clk_data.clks = clk;
clk_data.clk_num = ARRAY_SIZE(clk);

13
drivers/clk/imx/clk.h
View File

@ -41,7 +41,7 @@ struct clk *imx_clk_pllv3(enum imx_pllv3_type type, const char *name,
struct clk *clk_register_gate2(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
void __iomem *reg, u8 bit_idx,
void __iomem *reg, u8 bit_idx, u8 cgr_val,
u8 clk_gate_flags, spinlock_t *lock,
unsigned int *share_count);
@ -55,7 +55,7 @@ static inline struct clk *imx_clk_gate2(const char *name, const char *parent,
void __iomem *reg, u8 shift)
{
return clk_register_gate2(NULL, name, parent, CLK_SET_RATE_PARENT, reg,
shift, 0, &imx_ccm_lock, NULL);
shift, 0x3, 0, &imx_ccm_lock, NULL);
}
static inline struct clk *imx_clk_gate2_shared(const char *name,
@ -63,7 +63,14 @@ static inline struct clk *imx_clk_gate2_shared(const char *name,
unsigned int *share_count)
{
return clk_register_gate2(NULL, name, parent, CLK_SET_RATE_PARENT, reg,
shift, 0, &imx_ccm_lock, share_count);
shift, 0x3, 0, &imx_ccm_lock, share_count);
}
static inline struct clk *imx_clk_gate2_cgr(const char *name, const char *parent,
void __iomem *reg, u8 shift, u8 cgr_val)
{
return clk_register_gate2(NULL, name, parent, CLK_SET_RATE_PARENT, reg,
shift, cgr_val, 0, &imx_ccm_lock, NULL);
}
struct clk *imx_clk_pfd(const char *name, const char *parent_name,

11
drivers/clk/ingenic/cgu.c
View File

@ -325,6 +325,7 @@ ingenic_clk_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
div = (div_reg >> clk_info->div.shift) &
GENMASK(clk_info->div.bits - 1, 0);
div += 1;
div *= clk_info->div.div;
rate /= div;
}
@ -345,6 +346,14 @@ ingenic_clk_calc_div(const struct ingenic_cgu_clk_info *clk_info,
div = min_t(unsigned, div, 1 << clk_info->div.bits);
div = max_t(unsigned, div, 1);
/*
* If the divider value itself must be divided before being written to
* the divider register, we must ensure we don't have any bits set that
* would be lost as a result of doing so.
*/
div /= clk_info->div.div;
div *= clk_info->div.div;
return div;
}
@ -395,7 +404,7 @@ ingenic_clk_set_rate(struct clk_hw *hw, unsigned long req_rate,
/* update the divide */
mask = GENMASK(clk_info->div.bits - 1, 0);
reg &= ~(mask << clk_info->div.shift);
reg |= (div - 1) << clk_info->div.shift;
reg |= ((div / clk_info->div.div) - 1) << clk_info->div.shift;
/* clear the stop bit */
if (clk_info->div.stop_bit != -1)

6
drivers/clk/ingenic/cgu.h
View File

@ -76,8 +76,11 @@ struct ingenic_cgu_mux_info {
/**
* struct ingenic_cgu_div_info - information about a divider
* @reg: offset of the divider control register within the CGU
* @shift: number of bits to shift the divide value by (ie. the index of
* @shift: number of bits to left shift the divide value by (ie. the index of
* the lowest bit of the divide value within its control register)
* @div: number of bits to divide the divider value by (i.e. if the
* effective divider value is the value written to the register
* multiplied by some constant)
* @bits: the size of the divide value in bits
* @ce_bit: the index of the change enable bit within reg, or -1 if there
* isn't one
@ -87,6 +90,7 @@ struct ingenic_cgu_mux_info {
struct ingenic_cgu_div_info {
unsigned reg;
u8 shift;
u8 div;
u8 bits;
s8 ce_bit;
s8 busy_bit;

24
drivers/clk/ingenic/jz4740-cgu.c
View File

@ -90,51 +90,51 @@ static const struct ingenic_cgu_clk_info jz4740_cgu_clocks[] = {
[JZ4740_CLK_PLL_HALF] = {
"pll half", CGU_CLK_DIV,
.parents = { JZ4740_CLK_PLL, -1, -1, -1 },
.div = { CGU_REG_CPCCR, 21, 1, -1, -1, -1 },
.div = { CGU_REG_CPCCR, 21, 1, 1, -1, -1, -1 },
},
[JZ4740_CLK_CCLK] = {
"cclk", CGU_CLK_DIV,
.parents = { JZ4740_CLK_PLL, -1, -1, -1 },
.div = { CGU_REG_CPCCR, 0, 4, 22, -1, -1 },
.div = { CGU_REG_CPCCR, 0, 1, 4, 22, -1, -1 },
},
[JZ4740_CLK_HCLK] = {
"hclk", CGU_CLK_DIV,
.parents = { JZ4740_CLK_PLL, -1, -1, -1 },
.div = { CGU_REG_CPCCR, 4, 4, 22, -1, -1 },
.div = { CGU_REG_CPCCR, 4, 1, 4, 22, -1, -1 },
},
[JZ4740_CLK_PCLK] = {
"pclk", CGU_CLK_DIV,
.parents = { JZ4740_CLK_PLL, -1, -1, -1 },
.div = { CGU_REG_CPCCR, 8, 4, 22, -1, -1 },
.div = { CGU_REG_CPCCR, 8, 1, 4, 22, -1, -1 },
},
[JZ4740_CLK_MCLK] = {
"mclk", CGU_CLK_DIV,
.parents = { JZ4740_CLK_PLL, -1, -1, -1 },
.div = { CGU_REG_CPCCR, 12, 4, 22, -1, -1 },
.div = { CGU_REG_CPCCR, 12, 1, 4, 22, -1, -1 },
},
[JZ4740_CLK_LCD] = {
"lcd", CGU_CLK_DIV | CGU_CLK_GATE,
.parents = { JZ4740_CLK_PLL_HALF, -1, -1, -1 },
.div = { CGU_REG_CPCCR, 16, 5, 22, -1, -1 },
.div = { CGU_REG_CPCCR, 16, 1, 5, 22, -1, -1 },
.gate = { CGU_REG_CLKGR, 10 },
},
[JZ4740_CLK_LCD_PCLK] = {
"lcd_pclk", CGU_CLK_DIV,
.parents = { JZ4740_CLK_PLL_HALF, -1, -1, -1 },
.div = { CGU_REG_LPCDR, 0, 11, -1, -1, -1 },
.div = { CGU_REG_LPCDR, 0, 1, 11, -1, -1, -1 },
},
[JZ4740_CLK_I2S] = {
"i2s", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE,
.parents = { JZ4740_CLK_EXT, JZ4740_CLK_PLL_HALF, -1, -1 },
.mux = { CGU_REG_CPCCR, 31, 1 },
.div = { CGU_REG_I2SCDR, 0, 8, -1, -1, -1 },
.div = { CGU_REG_I2SCDR, 0, 1, 8, -1, -1, -1 },
.gate = { CGU_REG_CLKGR, 6 },
},
@ -142,21 +142,21 @@ static const struct ingenic_cgu_clk_info jz4740_cgu_clocks[] = {
"spi", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE,
.parents = { JZ4740_CLK_EXT, JZ4740_CLK_PLL, -1, -1 },
.mux = { CGU_REG_SSICDR, 31, 1 },
.div = { CGU_REG_SSICDR, 0, 4, -1, -1, -1 },
.div = { CGU_REG_SSICDR, 0, 1, 4, -1, -1, -1 },
.gate = { CGU_REG_CLKGR, 4 },
},
[JZ4740_CLK_MMC] = {
"mmc", CGU_CLK_DIV | CGU_CLK_GATE,
.parents = { JZ4740_CLK_PLL_HALF, -1, -1, -1 },
.div = { CGU_REG_MSCCDR, 0, 5, -1, -1, -1 },
.div = { CGU_REG_MSCCDR, 0, 1, 5, -1, -1, -1 },
.gate = { CGU_REG_CLKGR, 7 },
},
[JZ4740_CLK_UHC] = {
"uhc", CGU_CLK_DIV | CGU_CLK_GATE,
.parents = { JZ4740_CLK_PLL_HALF, -1, -1, -1 },
.div = { CGU_REG_UHCCDR, 0, 4, -1, -1, -1 },
.div = { CGU_REG_UHCCDR, 0, 1, 4, -1, -1, -1 },
.gate = { CGU_REG_CLKGR, 14 },
},
@ -164,7 +164,7 @@ static const struct ingenic_cgu_clk_info jz4740_cgu_clocks[] = {
"udc", CGU_CLK_MUX | CGU_CLK_DIV,
.parents = { JZ4740_CLK_EXT, JZ4740_CLK_PLL_HALF, -1, -1 },
.mux = { CGU_REG_CPCCR, 29, 1 },
.div = { CGU_REG_CPCCR, 23, 6, -1, -1, -1 },
.div = { CGU_REG_CPCCR, 23, 1, 6, -1, -1, -1 },
.gate = { CGU_REG_SCR, 6 },
},

40
drivers/clk/ingenic/jz4780-cgu.c
View File

@ -296,13 +296,13 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
[JZ4780_CLK_CPU] = {
"cpu", CGU_CLK_DIV,
.parents = { JZ4780_CLK_CPUMUX, -1, -1, -1 },
.div = { CGU_REG_CLOCKCONTROL, 0, 4, 22, -1, -1 },
.div = { CGU_REG_CLOCKCONTROL, 0, 1, 4, 22, -1, -1 },
},
[JZ4780_CLK_L2CACHE] = {
"l2cache", CGU_CLK_DIV,
.parents = { JZ4780_CLK_CPUMUX, -1, -1, -1 },
.div = { CGU_REG_CLOCKCONTROL, 4, 4, -1, -1, -1 },
.div = { CGU_REG_CLOCKCONTROL, 4, 1, 4, -1, -1, -1 },
},
[JZ4780_CLK_AHB0] = {
@ -310,7 +310,7 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
.parents = { -1, JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
JZ4780_CLK_EPLL },
.mux = { CGU_REG_CLOCKCONTROL, 26, 2 },
.div = { CGU_REG_CLOCKCONTROL, 8, 4, 21, -1, -1 },
.div = { CGU_REG_CLOCKCONTROL, 8, 1, 4, 21, -1, -1 },
},
[JZ4780_CLK_AHB2PMUX] = {
@ -323,20 +323,20 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
[JZ4780_CLK_AHB2] = {
"ahb2", CGU_CLK_DIV,
.parents = { JZ4780_CLK_AHB2PMUX, -1, -1, -1 },
.div = { CGU_REG_CLOCKCONTROL, 12, 4, 20, -1, -1 },
.div = { CGU_REG_CLOCKCONTROL, 12, 1, 4, 20, -1, -1 },
},
[JZ4780_CLK_PCLK] = {
"pclk", CGU_CLK_DIV,
.parents = { JZ4780_CLK_AHB2PMUX, -1, -1, -1 },
.div = { CGU_REG_CLOCKCONTROL, 16, 4, 20, -1, -1 },
.div = { CGU_REG_CLOCKCONTROL, 16, 1, 4, 20, -1, -1 },
},
[JZ4780_CLK_DDR] = {
"ddr", CGU_CLK_MUX | CGU_CLK_DIV,
.parents = { -1, JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL, -1 },
.mux = { CGU_REG_DDRCDR, 30, 2 },
.div = { CGU_REG_DDRCDR, 0, 4, 29, 28, 27 },
.div = { CGU_REG_DDRCDR, 0, 1, 4, 29, 28, 27 },
},
[JZ4780_CLK_VPU] = {
@ -344,7 +344,7 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
.parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
JZ4780_CLK_EPLL, -1 },
.mux = { CGU_REG_VPUCDR, 30, 2 },
.div = { CGU_REG_VPUCDR, 0, 4, 29, 28, 27 },
.div = { CGU_REG_VPUCDR, 0, 1, 4, 29, 28, 27 },
.gate = { CGU_REG_CLKGR1, 2 },
},
@ -352,7 +352,7 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
"i2s_pll", CGU_CLK_MUX | CGU_CLK_DIV,
.parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_EPLL, -1, -1 },
.mux = { CGU_REG_I2SCDR, 30, 1 },
.div = { CGU_REG_I2SCDR, 0, 8, 29, 28, 27 },
.div = { CGU_REG_I2SCDR, 0, 1, 8, 29, 28, 27 },
},
[JZ4780_CLK_I2S] = {
@ -366,7 +366,7 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
.parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
JZ4780_CLK_VPLL, -1 },
.mux = { CGU_REG_LP0CDR, 30, 2 },
.div = { CGU_REG_LP0CDR, 0, 8, 28, 27, 26 },
.div = { CGU_REG_LP0CDR, 0, 1, 8, 28, 27, 26 },
},
[JZ4780_CLK_LCD1PIXCLK] = {
@ -374,7 +374,7 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
.parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
JZ4780_CLK_VPLL, -1 },
.mux = { CGU_REG_LP1CDR, 30, 2 },
.div = { CGU_REG_LP1CDR, 0, 8, 28, 27, 26 },
.div = { CGU_REG_LP1CDR, 0, 1, 8, 28, 27, 26 },
},
[JZ4780_CLK_MSCMUX] = {
@ -386,21 +386,21 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
[JZ4780_CLK_MSC0] = {
"msc0", CGU_CLK_DIV | CGU_CLK_GATE,
.parents = { JZ4780_CLK_MSCMUX, -1, -1, -1 },
.div = { CGU_REG_MSC0CDR, 0, 8, 29, 28, 27 },
.div = { CGU_REG_MSC0CDR, 0, 2, 8, 29, 28, 27 },
.gate = { CGU_REG_CLKGR0, 3 },
},
[JZ4780_CLK_MSC1] = {
"msc1", CGU_CLK_DIV | CGU_CLK_GATE,
.parents = { JZ4780_CLK_MSCMUX, -1, -1, -1 },
.div = { CGU_REG_MSC1CDR, 0, 8, 29, 28, 27 },
.div = { CGU_REG_MSC1CDR, 0, 2, 8, 29, 28, 27 },
.gate = { CGU_REG_CLKGR0, 11 },
},
[JZ4780_CLK_MSC2] = {
"msc2", CGU_CLK_DIV | CGU_CLK_GATE,
.parents = { JZ4780_CLK_MSCMUX, -1, -1, -1 },
.div = { CGU_REG_MSC2CDR, 0, 8, 29, 28, 27 },
.div = { CGU_REG_MSC2CDR, 0, 2, 8, 29, 28, 27 },
.gate = { CGU_REG_CLKGR0, 12 },
},
@ -409,7 +409,7 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
.parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
JZ4780_CLK_EPLL, JZ4780_CLK_OTGPHY },
.mux = { CGU_REG_UHCCDR, 30, 2 },
.div = { CGU_REG_UHCCDR, 0, 8, 29, 28, 27 },
.div = { CGU_REG_UHCCDR, 0, 1, 8, 29, 28, 27 },
.gate = { CGU_REG_CLKGR0, 24 },
},
@ -417,7 +417,7 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
"ssi_pll", CGU_CLK_MUX | CGU_CLK_DIV,
.parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL, -1, -1 },
.mux = { CGU_REG_SSICDR, 30, 1 },
.div = { CGU_REG_SSICDR, 0, 8, 29, 28, 27 },
.div = { CGU_REG_SSICDR, 0, 1, 8, 29, 28, 27 },
},
[JZ4780_CLK_SSI] = {
@ -430,7 +430,7 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
"cim_mclk", CGU_CLK_MUX | CGU_CLK_DIV,
.parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL, -1, -1 },
.mux = { CGU_REG_CIMCDR, 31, 1 },
.div = { CGU_REG_CIMCDR, 0, 8, 30, 29, 28 },
.div = { CGU_REG_CIMCDR, 0, 1, 8, 30, 29, 28 },
},
[JZ4780_CLK_PCMPLL] = {
@ -438,7 +438,7 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
.parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
JZ4780_CLK_EPLL, JZ4780_CLK_VPLL },
.mux = { CGU_REG_PCMCDR, 29, 2 },
.div = { CGU_REG_PCMCDR, 0, 8, 28, 27, 26 },
.div = { CGU_REG_PCMCDR, 0, 1, 8, 28, 27, 26 },
},
[JZ4780_CLK_PCM] = {
@ -453,7 +453,7 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
.parents = { -1, JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
JZ4780_CLK_EPLL },
.mux = { CGU_REG_GPUCDR, 30, 2 },
.div = { CGU_REG_GPUCDR, 0, 4, 29, 28, 27 },
.div = { CGU_REG_GPUCDR, 0, 1, 4, 29, 28, 27 },
.gate = { CGU_REG_CLKGR1, 4 },
},
@ -462,7 +462,7 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
.parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
JZ4780_CLK_VPLL, -1 },
.mux = { CGU_REG_HDMICDR, 30, 2 },
.div = { CGU_REG_HDMICDR, 0, 8, 29, 28, 26 },
.div = { CGU_REG_HDMICDR, 0, 1, 8, 29, 28, 26 },
.gate = { CGU_REG_CLKGR1, 9 },
},
@ -471,7 +471,7 @@ static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
.parents = { -1, JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
JZ4780_CLK_EPLL },
.mux = { CGU_REG_BCHCDR, 30, 2 },
.div = { CGU_REG_BCHCDR, 0, 4, 29, 28, 27 },
.div = { CGU_REG_BCHCDR, 0, 1, 4, 29, 28, 27 },
.gate = { CGU_REG_CLKGR0, 1 },
},

6
drivers/clk/meson/meson8b-clkc.c
View File

@ -141,11 +141,11 @@ static const struct composite_conf mali_conf __initconst = {
};
static const struct clk_conf meson8b_xtal_conf __initconst =
FIXED_RATE_P(MESON8B_REG_CTL0_ADDR, CLKID_XTAL, "xtal",
CLK_IS_ROOT, PARM(0x00, 4, 7));
FIXED_RATE_P(MESON8B_REG_CTL0_ADDR, CLKID_XTAL, "xtal", 0,
PARM(0x00, 4, 7));
static const struct clk_conf meson8b_clk_confs[] __initconst = {
FIXED_RATE(CLKID_ZERO, "zero", CLK_IS_ROOT, 0),
FIXED_RATE(CLKID_ZERO, "zero", 0, 0),
PLL(MESON8B_REG_PLL_FIXED, CLKID_PLL_FIXED, "fixed_pll",
p_xtal, 0, &pll_confs),
PLL(MESON8B_REG_PLL_VID, CLKID_PLL_VID, "vid_pll",

14
drivers/clk/mmp/clk-mmp2.c
View File

@ -99,23 +99,19 @@ void __init mmp2_clk_init(phys_addr_t mpmu_phys, phys_addr_t apmu_phys,
return;
}
clk = clk_register_fixed_rate(NULL, "clk32", NULL, CLK_IS_ROOT, 3200);
clk = clk_register_fixed_rate(NULL, "clk32", NULL, 0, 3200);
clk_register_clkdev(clk, "clk32", NULL);
vctcxo = clk_register_fixed_rate(NULL, "vctcxo", NULL, CLK_IS_ROOT,
26000000);
vctcxo = clk_register_fixed_rate(NULL, "vctcxo", NULL, 0, 26000000);
clk_register_clkdev(vctcxo, "vctcxo", NULL);
clk = clk_register_fixed_rate(NULL, "pll1", NULL, CLK_IS_ROOT,
800000000);
clk = clk_register_fixed_rate(NULL, "pll1", NULL, 0, 800000000);
clk_register_clkdev(clk, "pll1", NULL);
clk = clk_register_fixed_rate(NULL, "usb_pll", NULL, CLK_IS_ROOT,
480000000);
clk = clk_register_fixed_rate(NULL, "usb_pll", NULL, 0, 480000000);
clk_register_clkdev(clk, "usb_pll", NULL);
clk = clk_register_fixed_rate(NULL, "pll2", NULL, CLK_IS_ROOT,
960000000);
clk = clk_register_fixed_rate(NULL, "pll2", NULL, 0, 960000000);
clk_register_clkdev(clk, "pll2", NULL);
clk = clk_register_fixed_factor(NULL, "pll1_2", "pll1",

10
drivers/clk/mmp/clk-of-mmp2.c
View File

@ -63,11 +63,11 @@ struct mmp2_clk_unit {
};
static struct mmp_param_fixed_rate_clk fixed_rate_clks[] = {
{MMP2_CLK_CLK32, "clk32", NULL, CLK_IS_ROOT, 32768},
{MMP2_CLK_VCTCXO, "vctcxo", NULL, CLK_IS_ROOT, 26000000},
{MMP2_CLK_PLL1, "pll1", NULL, CLK_IS_ROOT, 800000000},
{MMP2_CLK_PLL2, "pll2", NULL, CLK_IS_ROOT, 960000000},
{MMP2_CLK_USB_PLL, "usb_pll", NULL, CLK_IS_ROOT, 480000000},
{MMP2_CLK_CLK32, "clk32", NULL, 0, 32768},
{MMP2_CLK_VCTCXO, "vctcxo", NULL, 0, 26000000},
{MMP2_CLK_PLL1, "pll1", NULL, 0, 800000000},
{MMP2_CLK_PLL2, "pll2", NULL, 0, 960000000},
{MMP2_CLK_USB_PLL, "usb_pll", NULL, 0, 480000000},
};
static struct mmp_param_fixed_factor_clk fixed_factor_clks[] = {

8
drivers/clk/mmp/clk-of-pxa168.c
View File

@ -56,10 +56,10 @@ struct pxa168_clk_unit {
};
static struct mmp_param_fixed_rate_clk fixed_rate_clks[] = {
{PXA168_CLK_CLK32, "clk32", NULL, CLK_IS_ROOT, 32768},
{PXA168_CLK_VCTCXO, "vctcxo", NULL, CLK_IS_ROOT, 26000000},
{PXA168_CLK_PLL1, "pll1", NULL, CLK_IS_ROOT, 624000000},
{PXA168_CLK_USB_PLL, "usb_pll", NULL, CLK_IS_ROOT, 480000000},
{PXA168_CLK_CLK32, "clk32", NULL, 0, 32768},
{PXA168_CLK_VCTCXO, "vctcxo", NULL, 0, 26000000},
{PXA168_CLK_PLL1, "pll1", NULL, 0, 624000000},
{PXA168_CLK_USB_PLL, "usb_pll", NULL, 0, 480000000},
};
static struct mmp_param_fixed_factor_clk fixed_factor_clks[] = {

12
drivers/clk/mmp/clk-of-pxa1928.c
View File

@ -34,12 +34,12 @@ struct pxa1928_clk_unit {
};
static struct mmp_param_fixed_rate_clk fixed_rate_clks[] = {
{0, "clk32", NULL, CLK_IS_ROOT, 32768},
{0, "vctcxo", NULL, CLK_IS_ROOT, 26000000},
{0, "pll1_624", NULL, CLK_IS_ROOT, 624000000},
{0, "pll5p", NULL, CLK_IS_ROOT, 832000000},
{0, "pll5", NULL, CLK_IS_ROOT, 1248000000},
{0, "usb_pll", NULL, CLK_IS_ROOT, 480000000},
{0, "clk32", NULL, 0, 32768},
{0, "vctcxo", NULL, 0, 26000000},
{0, "pll1_624", NULL, 0, 624000000},
{0, "pll5p", NULL, 0, 832000000},
{0, "pll5", NULL, 0, 1248000000},
{0, "usb_pll", NULL, 0, 480000000},
};
static struct mmp_param_fixed_factor_clk fixed_factor_clks[] = {

8
drivers/clk/mmp/clk-of-pxa910.c
View File

@ -56,10 +56,10 @@ struct pxa910_clk_unit {
};
static struct mmp_param_fixed_rate_clk fixed_rate_clks[] = {
{PXA910_CLK_CLK32, "clk32", NULL, CLK_IS_ROOT, 32768},
{PXA910_CLK_VCTCXO, "vctcxo", NULL, CLK_IS_ROOT, 26000000},
{PXA910_CLK_PLL1, "pll1", NULL, CLK_IS_ROOT, 624000000},
{PXA910_CLK_USB_PLL, "usb_pll", NULL, CLK_IS_ROOT, 480000000},
{PXA910_CLK_CLK32, "clk32", NULL, 0, 32768},
{PXA910_CLK_VCTCXO, "vctcxo", NULL, 0, 26000000},
{PXA910_CLK_PLL1, "pll1", NULL, 0, 624000000},
{PXA910_CLK_USB_PLL, "usb_pll", NULL, 0, 480000000},
};
static struct mmp_param_fixed_factor_clk fixed_factor_clks[] = {

8
drivers/clk/mmp/clk-pxa168.c
View File

@ -92,15 +92,13 @@ void __init pxa168_clk_init(phys_addr_t mpmu_phys, phys_addr_t apmu_phys,
return;
}
clk = clk_register_fixed_rate(NULL, "clk32", NULL, CLK_IS_ROOT, 3200);
clk = clk_register_fixed_rate(NULL, "clk32", NULL, 0, 3200);
clk_register_clkdev(clk, "clk32", NULL);
clk = clk_register_fixed_rate(NULL, "vctcxo", NULL, CLK_IS_ROOT,
26000000);
clk = clk_register_fixed_rate(NULL, "vctcxo", NULL, 0, 26000000);
clk_register_clkdev(clk, "vctcxo", NULL);
clk = clk_register_fixed_rate(NULL, "pll1", NULL, CLK_IS_ROOT,
624000000);
clk = clk_register_fixed_rate(NULL, "pll1", NULL, 0, 624000000);
clk_register_clkdev(clk, "pll1", NULL);
clk = clk_register_fixed_factor(NULL, "pll1_2", "pll1",

8
drivers/clk/mmp/clk-pxa910.c
View File

@ -97,15 +97,13 @@ void __init pxa910_clk_init(phys_addr_t mpmu_phys, phys_addr_t apmu_phys,
return;
}
clk = clk_register_fixed_rate(NULL, "clk32", NULL, CLK_IS_ROOT, 3200);
clk = clk_register_fixed_rate(NULL, "clk32", NULL, 0, 3200);
clk_register_clkdev(clk, "clk32", NULL);
clk = clk_register_fixed_rate(NULL, "vctcxo", NULL, CLK_IS_ROOT,
26000000);
clk = clk_register_fixed_rate(NULL, "vctcxo", NULL, 0, 26000000);
clk_register_clkdev(clk, "vctcxo", NULL);
clk = clk_register_fixed_rate(NULL, "pll1", NULL, CLK_IS_ROOT,
624000000);
clk = clk_register_fixed_rate(NULL, "pll1", NULL, 0, 624000000);
clk_register_clkdev(clk, "pll1", NULL);
clk = clk_register_fixed_factor(NULL, "pll1_2", "pll1",

6
drivers/clk/mvebu/Kconfig
View File

@ -29,6 +29,12 @@ config ARMADA_XP_CLK
select MVEBU_CLK_COMMON
select MVEBU_CLK_CPU
config ARMADA_AP806_SYSCON
bool
config ARMADA_CP110_SYSCON
bool
config DOVE_CLK
bool
select MVEBU_CLK_COMMON

2
drivers/clk/mvebu/Makefile
View File

@ -7,6 +7,8 @@ obj-$(CONFIG_ARMADA_375_CLK) += armada-375.o
obj-$(CONFIG_ARMADA_38X_CLK) += armada-38x.o
obj-$(CONFIG_ARMADA_39X_CLK) += armada-39x.o
obj-$(CONFIG_ARMADA_XP_CLK) += armada-xp.o
obj-$(CONFIG_ARMADA_AP806_SYSCON) += ap806-system-controller.o
obj-$(CONFIG_ARMADA_CP110_SYSCON) += cp110-system-controller.o
obj-$(CONFIG_DOVE_CLK) += dove.o dove-divider.o
obj-$(CONFIG_KIRKWOOD_CLK) += kirkwood.o
obj-$(CONFIG_ORION_CLK) += orion.o

168
drivers/clk/mvebu/ap806-system-controller.c Normal file
View File

@ -0,0 +1,168 @@
/*
* Marvell Armada AP806 System Controller
*
* Copyright (C) 2016 Marvell
*
* Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#define pr_fmt(fmt) "ap806-system-controller: " fmt
#include <linux/clk-provider.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#define AP806_SAR_REG 0x400
#define AP806_SAR_CLKFREQ_MODE_MASK 0x1f
#define AP806_CLK_NUM 4
static struct clk *ap806_clks[AP806_CLK_NUM];
static struct clk_onecell_data ap806_clk_data = {
.clks = ap806_clks,
.clk_num = AP806_CLK_NUM,
};
static int ap806_syscon_clk_probe(struct platform_device *pdev)
{
unsigned int freq_mode, cpuclk_freq;
const char *name, *fixedclk_name;
struct device_node *np = pdev->dev.of_node;
struct regmap *regmap;
u32 reg;
int ret;
regmap = syscon_node_to_regmap(np);
if (IS_ERR(regmap)) {
dev_err(&pdev->dev, "cannot get regmap\n");
return PTR_ERR(regmap);
}
ret = regmap_read(regmap, AP806_SAR_REG, &reg);
if (ret) {
dev_err(&pdev->dev, "cannot read from regmap\n");
return ret;
}
freq_mode = reg & AP806_SAR_CLKFREQ_MODE_MASK;
switch (freq_mode) {
case 0x0 ... 0x5:
cpuclk_freq = 2000;
break;
case 0x6 ... 0xB:
cpuclk_freq = 1800;
break;
case 0xC ... 0x11:
cpuclk_freq = 1600;
break;
case 0x12 ... 0x16:
cpuclk_freq = 1400;
break;
case 0x17 ... 0x19:
cpuclk_freq = 1300;
break;
default:
dev_err(&pdev->dev, "invalid SAR value\n");
return -EINVAL;
}
/* Convert to hertz */
cpuclk_freq *= 1000 * 1000;
/* CPU clocks depend on the Sample At Reset configuration */
of_property_read_string_index(np, "clock-output-names",
0, &name);
ap806_clks[0] = clk_register_fixed_rate(&pdev->dev, name, NULL,
0, cpuclk_freq);
if (IS_ERR(ap806_clks[0])) {
ret = PTR_ERR(ap806_clks[0]);
goto fail0;
}
of_property_read_string_index(np, "clock-output-names",
1, &name);
ap806_clks[1] = clk_register_fixed_rate(&pdev->dev, name, NULL, 0,
cpuclk_freq);
if (IS_ERR(ap806_clks[1])) {
ret = PTR_ERR(ap806_clks[1]);
goto fail1;
}
/* Fixed clock is always 1200 Mhz */
of_property_read_string_index(np, "clock-output-names",
2, &fixedclk_name);
ap806_clks[2] = clk_register_fixed_rate(&pdev->dev, fixedclk_name, NULL,
0, 1200 * 1000 * 1000);
if (IS_ERR(ap806_clks[2])) {
ret = PTR_ERR(ap806_clks[2]);
goto fail2;
}
/* MSS Clock is fixed clock divided by 6 */
of_property_read_string_index(np, "clock-output-names",
3, &name);
ap806_clks[3] = clk_register_fixed_factor(NULL, name, fixedclk_name,
0, 1, 6);
if (IS_ERR(ap806_clks[3])) {
ret = PTR_ERR(ap806_clks[3]);
goto fail3;
}
ret = of_clk_add_provider(np, of_clk_src_onecell_get, &ap806_clk_data);
if (ret)
goto fail_clk_add;
return 0;
fail_clk_add:
clk_unregister_fixed_factor(ap806_clks[3]);
fail3:
clk_unregister_fixed_rate(ap806_clks[2]);
fail2:
clk_unregister_fixed_rate(ap806_clks[1]);
fail1:
clk_unregister_fixed_rate(ap806_clks[0]);
fail0:
return ret;
}
static int ap806_syscon_clk_remove(struct platform_device *pdev)
{
of_clk_del_provider(pdev->dev.of_node);
clk_unregister_fixed_factor(ap806_clks[3]);
clk_unregister_fixed_rate(ap806_clks[2]);
clk_unregister_fixed_rate(ap806_clks[1]);
clk_unregister_fixed_rate(ap806_clks[0]);
return 0;
}
static const struct of_device_id ap806_syscon_of_match[] = {
{ .compatible = "marvell,ap806-system-controller", },
{ }
};
MODULE_DEVICE_TABLE(of, armada8k_pcie_of_match);
static struct platform_driver ap806_syscon_driver = {
.probe = ap806_syscon_clk_probe,
.remove = ap806_syscon_clk_remove,
.driver = {
.name = "marvell-ap806-system-controller",
.of_match_table = ap806_syscon_of_match,
},
};
module_platform_driver(ap806_syscon_driver);
MODULE_DESCRIPTION("Marvell AP806 System Controller driver");
MODULE_AUTHOR("Thomas Petazzoni <thomas.petazzoni@free-electrons.com>");
MODULE_LICENSE("GPL");

406
drivers/clk/mvebu/cp110-system-controller.c Normal file
View File

@ -0,0 +1,406 @@
/*
* Marvell Armada CP110 System Controller
*
* Copyright (C) 2016 Marvell
*
* Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
/*
* CP110 has 5 core clocks:
*
* - APLL (1 Ghz)
* - PPv2 core (1/3 APLL)
* - EIP (1/2 APLL)
* - Core (1/2 EIP)
*
* - NAND clock, which is either:
* - Equal to the core clock
* - 2/5 APLL
*
* CP110 has 32 gatable clocks, for the various peripherals in the
* IP. They have fairly complicated parent/child relationships.
*/
#define pr_fmt(fmt) "cp110-system-controller: " fmt
#include <linux/clk-provider.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#define CP110_PM_CLOCK_GATING_REG 0x220
#define CP110_NAND_FLASH_CLK_CTRL_REG 0x700
#define NF_CLOCK_SEL_400_MASK BIT(0)
enum {
CP110_CLK_TYPE_CORE,
CP110_CLK_TYPE_GATABLE,
};
#define CP110_MAX_CORE_CLOCKS 5
#define CP110_MAX_GATABLE_CLOCKS 32
#define CP110_CLK_NUM \
(CP110_MAX_CORE_CLOCKS + CP110_MAX_GATABLE_CLOCKS)
#define CP110_CORE_APLL 0
#define CP110_CORE_PPV2 1
#define CP110_CORE_EIP 2
#define CP110_CORE_CORE 3
#define CP110_CORE_NAND 4
/* A number of gatable clocks need special handling */
#define CP110_GATE_AUDIO 0
#define CP110_GATE_COMM_UNIT 1
#define CP110_GATE_NAND 2
#define CP110_GATE_PPV2 3
#define CP110_GATE_SDIO 4
#define CP110_GATE_XOR1 7
#define CP110_GATE_XOR0 8
#define CP110_GATE_PCIE_X1_0 11
#define CP110_GATE_PCIE_X1_1 12
#define CP110_GATE_PCIE_X4 13
#define CP110_GATE_PCIE_XOR 14
#define CP110_GATE_SATA 15
#define CP110_GATE_SATA_USB 16
#define CP110_GATE_MAIN 17
#define CP110_GATE_SDMMC 18
#define CP110_GATE_SLOW_IO 21
#define CP110_GATE_USB3H0 22
#define CP110_GATE_USB3H1 23
#define CP110_GATE_USB3DEV 24
#define CP110_GATE_EIP150 25
#define CP110_GATE_EIP197 26
static struct clk *cp110_clks[CP110_CLK_NUM];
static struct clk_onecell_data cp110_clk_data = {
.clks = cp110_clks,
.clk_num = CP110_CLK_NUM,
};
struct cp110_gate_clk {
struct clk_hw hw;
struct regmap *regmap;
u8 bit_idx;
};
#define to_cp110_gate_clk(clk) container_of(clk, struct cp110_gate_clk, hw)
static int cp110_gate_enable(struct clk_hw *hw)
{
struct cp110_gate_clk *gate = to_cp110_gate_clk(hw);
regmap_update_bits(gate->regmap, CP110_PM_CLOCK_GATING_REG,
BIT(gate->bit_idx), BIT(gate->bit_idx));
return 0;
}
static void cp110_gate_disable(struct clk_hw *hw)
{
struct cp110_gate_clk *gate = to_cp110_gate_clk(hw);
regmap_update_bits(gate->regmap, CP110_PM_CLOCK_GATING_REG,
BIT(gate->bit_idx), 0);
}
static int cp110_gate_is_enabled(struct clk_hw *hw)
{
struct cp110_gate_clk *gate = to_cp110_gate_clk(hw);
u32 val;
regmap_read(gate->regmap, CP110_PM_CLOCK_GATING_REG, &val);
return val & BIT(gate->bit_idx);
}
static const struct clk_ops cp110_gate_ops = {
.enable = cp110_gate_enable,
.disable = cp110_gate_disable,
.is_enabled = cp110_gate_is_enabled,
};
static struct clk *cp110_register_gate(const char *name,
const char *parent_name,
struct regmap *regmap, u8 bit_idx)
{
struct cp110_gate_clk *gate;
struct clk *clk;
struct clk_init_data init;
gate = kzalloc(sizeof(*gate), GFP_KERNEL);
if (!gate)
return ERR_PTR(-ENOMEM);
init.name = name;
init.ops = &cp110_gate_ops;
init.parent_names = &parent_name;
init.num_parents = 1;
gate->regmap = regmap;
gate->bit_idx = bit_idx;
gate->hw.init = &init;
clk = clk_register(NULL, &gate->hw);
if (IS_ERR(clk))
kfree(gate);
return clk;
}
static void cp110_unregister_gate(struct clk *clk)
{
struct clk_hw *hw;
hw = __clk_get_hw(clk);
if (!hw)
return;
clk_unregister(clk);
kfree(to_cp110_gate_clk(hw));
}
static struct clk *cp110_of_clk_get(struct of_phandle_args *clkspec, void *data)
{
struct clk_onecell_data *clk_data = data;
unsigned int type = clkspec->args[0];
unsigned int idx = clkspec->args[1];
if (type == CP110_CLK_TYPE_CORE) {
if (idx > CP110_MAX_CORE_CLOCKS)
return ERR_PTR(-EINVAL);
return clk_data->clks[idx];
} else if (type == CP110_CLK_TYPE_GATABLE) {
if (idx > CP110_MAX_GATABLE_CLOCKS)
return ERR_PTR(-EINVAL);
return clk_data->clks[CP110_MAX_CORE_CLOCKS + idx];
}
return ERR_PTR(-EINVAL);
}
static int cp110_syscon_clk_probe(struct platform_device *pdev)
{
struct regmap *regmap;
struct device_node *np = pdev->dev.of_node;
const char *ppv2_name, *apll_name, *core_name, *eip_name, *nand_name;
struct clk *clk;
u32 nand_clk_ctrl;
int i, ret;
regmap = syscon_node_to_regmap(np);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
ret = regmap_read(regmap, CP110_NAND_FLASH_CLK_CTRL_REG,
&nand_clk_ctrl);
if (ret)
return ret;
/* Register the APLL which is the root of the clk tree */
of_property_read_string_index(np, "core-clock-output-names",
CP110_CORE_APLL, &apll_name);
clk = clk_register_fixed_rate(NULL, apll_name, NULL, 0,
1000 * 1000 * 1000);
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);
goto fail0;
}
cp110_clks[CP110_CORE_APLL] = clk;
/* PPv2 is APLL/3 */
of_property_read_string_index(np, "core-clock-output-names",
CP110_CORE_PPV2, &ppv2_name);
clk = clk_register_fixed_factor(NULL, ppv2_name, apll_name, 0, 1, 3);
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);
goto fail1;
}
cp110_clks[CP110_CORE_PPV2] = clk;
/* EIP clock is APLL/2 */
of_property_read_string_index(np, "core-clock-output-names",
CP110_CORE_EIP, &eip_name);
clk = clk_register_fixed_factor(NULL, eip_name, apll_name, 0, 1, 2);
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);
goto fail2;
}
cp110_clks[CP110_CORE_EIP] = clk;
/* Core clock is EIP/2 */
of_property_read_string_index(np, "core-clock-output-names",
CP110_CORE_CORE, &core_name);
clk = clk_register_fixed_factor(NULL, core_name, eip_name, 0, 1, 2);
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);
goto fail3;
}
cp110_clks[CP110_CORE_CORE] = clk;
/* NAND can be either APLL/2.5 or core clock */
of_property_read_string_index(np, "core-clock-output-names",
CP110_CORE_NAND, &nand_name);
if (nand_clk_ctrl & NF_CLOCK_SEL_400_MASK)
clk = clk_register_fixed_factor(NULL, nand_name,
apll_name, 0, 2, 5);
else
clk = clk_register_fixed_factor(NULL, nand_name,
core_name, 0, 1, 1);
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);
goto fail4;
}
cp110_clks[CP110_CORE_NAND] = clk;
for (i = 0; i < CP110_MAX_GATABLE_CLOCKS; i++) {
const char *parent, *name;
int ret;
ret = of_property_read_string_index(np,
"gate-clock-output-names",
i, &name);
/* Reached the end of the list? */
if (ret < 0)
break;
if (!strcmp(name, "none"))
continue;
switch (i) {
case CP110_GATE_AUDIO:
case CP110_GATE_COMM_UNIT:
case CP110_GATE_EIP150:
case CP110_GATE_EIP197:
case CP110_GATE_SLOW_IO:
of_property_read_string_index(np,
"gate-clock-output-names",
CP110_GATE_MAIN, &parent);
break;
case CP110_GATE_NAND:
parent = nand_name;
break;
case CP110_GATE_PPV2:
parent = ppv2_name;
break;
case CP110_GATE_SDIO:
of_property_read_string_index(np,
"gate-clock-output-names",
CP110_GATE_SDMMC, &parent);
break;
case CP110_GATE_XOR1:
case CP110_GATE_XOR0:
case CP110_GATE_PCIE_X1_0:
case CP110_GATE_PCIE_X1_1:
case CP110_GATE_PCIE_X4:
of_property_read_string_index(np,
"gate-clock-output-names",
CP110_GATE_PCIE_XOR, &parent);
break;
case CP110_GATE_SATA:
case CP110_GATE_USB3H0:
case CP110_GATE_USB3H1:
case CP110_GATE_USB3DEV:
of_property_read_string_index(np,
"gate-clock-output-names",
CP110_GATE_SATA_USB, &parent);
break;
default:
parent = core_name;
break;
}
clk = cp110_register_gate(name, parent, regmap, i);
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);
goto fail_gate;
}
cp110_clks[CP110_MAX_CORE_CLOCKS + i] = clk;
}
ret = of_clk_add_provider(np, cp110_of_clk_get, &cp110_clk_data);
if (ret)
goto fail_clk_add;
return 0;
fail_clk_add:
fail_gate:
for (i = 0; i < CP110_MAX_GATABLE_CLOCKS; i++) {
clk = cp110_clks[CP110_MAX_CORE_CLOCKS + i];
if (clk)
cp110_unregister_gate(clk);
}
clk_unregister_fixed_factor(cp110_clks[CP110_CORE_NAND]);
fail4:
clk_unregister_fixed_factor(cp110_clks[CP110_CORE_CORE]);
fail3:
clk_unregister_fixed_factor(cp110_clks[CP110_CORE_EIP]);
fail2:
clk_unregister_fixed_factor(cp110_clks[CP110_CORE_PPV2]);
fail1:
clk_unregister_fixed_rate(cp110_clks[CP110_CORE_APLL]);
fail0:
return ret;
}
static int cp110_syscon_clk_remove(struct platform_device *pdev)
{
int i;
of_clk_del_provider(pdev->dev.of_node);
for (i = 0; i < CP110_MAX_GATABLE_CLOCKS; i++) {
struct clk *clk = cp110_clks[CP110_MAX_CORE_CLOCKS + i];
if (clk)
cp110_unregister_gate(clk);
}
clk_unregister_fixed_factor(cp110_clks[CP110_CORE_NAND]);
clk_unregister_fixed_factor(cp110_clks[CP110_CORE_CORE]);
clk_unregister_fixed_factor(cp110_clks[CP110_CORE_EIP]);
clk_unregister_fixed_factor(cp110_clks[CP110_CORE_PPV2]);
clk_unregister_fixed_rate(cp110_clks[CP110_CORE_APLL]);
return 0;
}
static const struct of_device_id cp110_syscon_of_match[] = {
{ .compatible = "marvell,cp110-system-controller0", },
{ }
};
MODULE_DEVICE_TABLE(of, armada8k_pcie_of_match);
static struct platform_driver cp110_syscon_driver = {
.probe = cp110_syscon_clk_probe,
.remove = cp110_syscon_clk_remove,
.driver = {
.name = "marvell-cp110-system-controller0",
.of_match_table = cp110_syscon_of_match,
},
};
module_platform_driver(cp110_syscon_driver);
MODULE_DESCRIPTION("Marvell CP110 System Controller 0 driver");
MODULE_AUTHOR("Thomas Petazzoni <thomas.petazzoni@free-electrons.com>");
MODULE_LICENSE("GPL");

1
drivers/clk/nxp/clk-lpc18xx-creg.c
View File

@ -147,6 +147,7 @@ static struct clk *clk_register_creg_clk(struct device *dev,
init.name = creg_clk->name;
init.parent_names = parent_name;
init.num_parents = 1;
init.flags = 0;
creg_clk->reg = syscon;
creg_clk->hw.init = &init;

2
drivers/clk/qcom/gcc-msm8916.c
View File

@ -2346,6 +2346,7 @@ static struct clk_branch gcc_crypto_ahb_clk = {
"pcnoc_bfdcd_clk_src",
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
@ -2381,6 +2382,7 @@ static struct clk_branch gcc_crypto_clk = {
"crypto_clk_src",
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},

32
drivers/clk/qcom/mmcc-msm8996.c
View File

@ -1279,21 +1279,6 @@ static struct clk_branch mmss_misc_cxo_clk = {
},
};
static struct clk_branch mmss_mmagic_axi_clk = {
.halt_reg = 0x506c,
.clkr = {
.enable_reg = 0x506c,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "mmss_mmagic_axi_clk",
.parent_names = (const char *[]){ "axi_clk_src" },
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch mmss_mmagic_maxi_clk = {
.halt_reg = 0x5074,
.clkr = {
@ -1579,21 +1564,6 @@ static struct clk_branch smmu_video_axi_clk = {
},
};
static struct clk_branch mmagic_bimc_axi_clk = {
.halt_reg = 0x5294,
.clkr = {
.enable_reg = 0x5294,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "mmagic_bimc_axi_clk",
.parent_names = (const char *[]){ "axi_clk_src" },
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch mmagic_bimc_noc_cfg_ahb_clk = {
.halt_reg = 0x5298,
.clkr = {
@ -3121,7 +3091,6 @@ static struct clk_regmap *mmcc_msm8996_clocks[] = {
[MMSS_MMAGIC_CFG_AHB_CLK] = &mmss_mmagic_cfg_ahb_clk.clkr,
[MMSS_MISC_AHB_CLK] = &mmss_misc_ahb_clk.clkr,
[MMSS_MISC_CXO_CLK] = &mmss_misc_cxo_clk.clkr,
[MMSS_MMAGIC_AXI_CLK] = &mmss_mmagic_axi_clk.clkr,
[MMSS_MMAGIC_MAXI_CLK] = &mmss_mmagic_maxi_clk.clkr,
[MMAGIC_CAMSS_AXI_CLK] = &mmagic_camss_axi_clk.clkr,
[MMAGIC_CAMSS_NOC_CFG_AHB_CLK] = &mmagic_camss_noc_cfg_ahb_clk.clkr,
@ -3141,7 +3110,6 @@ static struct clk_regmap *mmcc_msm8996_clocks[] = {
[MMAGIC_VIDEO_NOC_CFG_AHB_CLK] = &mmagic_video_noc_cfg_ahb_clk.clkr,
[SMMU_VIDEO_AHB_CLK] = &smmu_video_ahb_clk.clkr,
[SMMU_VIDEO_AXI_CLK] = &smmu_video_axi_clk.clkr,
[MMAGIC_BIMC_AXI_CLK] = &mmagic_bimc_axi_clk.clkr,
[MMAGIC_BIMC_NOC_CFG_AHB_CLK] = &mmagic_bimc_noc_cfg_ahb_clk.clkr,
[GPU_GX_GFX3D_CLK] = &gpu_gx_gfx3d_clk.clkr,
[GPU_GX_RBBMTIMER_CLK] = &gpu_gx_rbbmtimer_clk.clkr,

3
drivers/clk/renesas/clk-mstp.c
View File

@ -316,11 +316,10 @@ void __init cpg_mstp_add_clk_domain(struct device_node *np)
return;
pd->name = np->name;
pd->flags = GENPD_FLAG_PM_CLK;
pm_genpd_init(pd, &simple_qos_governor, false);
pd->attach_dev = cpg_mstp_attach_dev;
pd->detach_dev = cpg_mstp_detach_dev;
pm_genpd_init(pd, &pm_domain_always_on_gov, false);
of_genpd_add_provider_simple(np, pd);
}

13
drivers/clk/renesas/r8a7795-cpg-mssr.c
View File

@ -120,6 +120,7 @@ static const struct cpg_core_clk r8a7795_core_clks[] __initconst = {
DEF_DIV6P1("mso", R8A7795_CLK_MSO, CLK_PLL1_DIV4, 0x014),
DEF_DIV6P1("hdmi", R8A7795_CLK_HDMI, CLK_PLL1_DIV2, 0x250),
DEF_DIV6P1("canfd", R8A7795_CLK_CANFD, CLK_PLL1_DIV4, 0x244),
DEF_DIV6P1("csi0", R8A7795_CLK_CSI0, CLK_PLL1_DIV4, 0x00c),
DEF_DIV6_RO("osc", R8A7795_CLK_OSC, CLK_EXTAL, CPG_RCKCR, 8),
DEF_DIV6_RO("r_int", CLK_RINT, CLK_EXTAL, CPG_RCKCR, 32),
@ -190,6 +191,10 @@ static const struct mssr_mod_clk r8a7795_mod_clks[] __initconst = {
DEF_MOD("ehci1", 702, R8A7795_CLK_S3D4),
DEF_MOD("ehci0", 703, R8A7795_CLK_S3D4),
DEF_MOD("hsusb", 704, R8A7795_CLK_S3D4),
DEF_MOD("csi21", 713, R8A7795_CLK_CSI0),
DEF_MOD("csi20", 714, R8A7795_CLK_CSI0),
DEF_MOD("csi41", 715, R8A7795_CLK_CSI0),
DEF_MOD("csi40", 716, R8A7795_CLK_CSI0),
DEF_MOD("du3", 721, R8A7795_CLK_S2D1),
DEF_MOD("du2", 722, R8A7795_CLK_S2D1),
DEF_MOD("du1", 723, R8A7795_CLK_S2D1),
@ -197,6 +202,14 @@ static const struct mssr_mod_clk r8a7795_mod_clks[] __initconst = {
DEF_MOD("lvds", 727, R8A7795_CLK_S2D1),
DEF_MOD("hdmi1", 728, R8A7795_CLK_HDMI),
DEF_MOD("hdmi0", 729, R8A7795_CLK_HDMI),
DEF_MOD("vin7", 804, R8A7795_CLK_S2D1),
DEF_MOD("vin6", 805, R8A7795_CLK_S2D1),
DEF_MOD("vin5", 806, R8A7795_CLK_S2D1),
DEF_MOD("vin4", 807, R8A7795_CLK_S2D1),
DEF_MOD("vin3", 808, R8A7795_CLK_S2D1),
DEF_MOD("vin2", 809, R8A7795_CLK_S2D1),
DEF_MOD("vin1", 810, R8A7795_CLK_S2D1),
DEF_MOD("vin0", 811, R8A7795_CLK_S2D1),
DEF_MOD("etheravb", 812, R8A7795_CLK_S3D2),
DEF_MOD("sata0", 815, R8A7795_CLK_S3D2),
DEF_MOD("gpio7", 905, R8A7795_CLK_CP),

2
drivers/clk/renesas/renesas-cpg-mssr.c
View File

@ -493,9 +493,9 @@ static int __init cpg_mssr_add_clk_domain(struct device *dev,
genpd = &pd->genpd;
genpd->name = np->name;
genpd->flags = GENPD_FLAG_PM_CLK;
pm_genpd_init(genpd, &simple_qos_governor, false);
genpd->attach_dev = cpg_mssr_attach_dev;
genpd->detach_dev = cpg_mssr_detach_dev;
pm_genpd_init(genpd, &pm_domain_always_on_gov, false);
cpg_mssr_clk_domain = pd;
of_genpd_add_provider_simple(np, genpd);

1
drivers/clk/rockchip/Makefile
View File

@ -15,3 +15,4 @@ obj-y += clk-rk3188.o
obj-y += clk-rk3228.o
obj-y += clk-rk3288.o
obj-y += clk-rk3368.o
obj-y += clk-rk3399.o

29
drivers/clk/rockchip/clk-cpu.c
View File

@ -158,12 +158,16 @@ static int rockchip_cpuclk_pre_rate_change(struct rockchip_cpuclk *cpuclk,
writel(HIWORD_UPDATE(alt_div, reg_data->div_core_mask,
reg_data->div_core_shift) |
HIWORD_UPDATE(1, 1, reg_data->mux_core_shift),
HIWORD_UPDATE(reg_data->mux_core_alt,
reg_data->mux_core_mask,
reg_data->mux_core_shift),
cpuclk->reg_base + reg_data->core_reg);
} else {
/* select alternate parent */
writel(HIWORD_UPDATE(1, 1, reg_data->mux_core_shift),
cpuclk->reg_base + reg_data->core_reg);
writel(HIWORD_UPDATE(reg_data->mux_core_alt,
reg_data->mux_core_mask,
reg_data->mux_core_shift),
cpuclk->reg_base + reg_data->core_reg);
}
spin_unlock_irqrestore(cpuclk->lock, flags);
@ -198,7 +202,9 @@ static int rockchip_cpuclk_post_rate_change(struct rockchip_cpuclk *cpuclk,
writel(HIWORD_UPDATE(0, reg_data->div_core_mask,
reg_data->div_core_shift) |
HIWORD_UPDATE(0, 1, reg_data->mux_core_shift),
HIWORD_UPDATE(reg_data->mux_core_main,
reg_data->mux_core_mask,
reg_data->mux_core_shift),
cpuclk->reg_base + reg_data->core_reg);
if (ndata->old_rate > ndata->new_rate)
@ -252,7 +258,7 @@ struct clk *rockchip_clk_register_cpuclk(const char *name,
return ERR_PTR(-ENOMEM);
init.name = name;
init.parent_names = &parent_names[0];
init.parent_names = &parent_names[reg_data->mux_core_main];
init.num_parents = 1;
init.ops = &rockchip_cpuclk_ops;
@ -270,10 +276,10 @@ struct clk *rockchip_clk_register_cpuclk(const char *name,
cpuclk->clk_nb.notifier_call = rockchip_cpuclk_notifier_cb;
cpuclk->hw.init = &init;
cpuclk->alt_parent = __clk_lookup(parent_names[1]);
cpuclk->alt_parent = __clk_lookup(parent_names[reg_data->mux_core_alt]);
if (!cpuclk->alt_parent) {
pr_err("%s: could not lookup alternate parent\n",
__func__);
pr_err("%s: could not lookup alternate parent: (%d)\n",
__func__, reg_data->mux_core_alt);
ret = -EINVAL;
goto free_cpuclk;
}
@ -285,10 +291,11 @@ struct clk *rockchip_clk_register_cpuclk(const char *name,
goto free_cpuclk;
}
clk = __clk_lookup(parent_names[0]);
clk = __clk_lookup(parent_names[reg_data->mux_core_main]);
if (!clk) {
pr_err("%s: could not lookup parent clock %s\n",
__func__, parent_names[0]);
pr_err("%s: could not lookup parent clock: (%d) %s\n",
__func__, reg_data->mux_core_main,
parent_names[reg_data->mux_core_main]);
ret = -EINVAL;
goto free_alt_parent;
}

3
drivers/clk/rockchip/clk-mmc-phase.c
View File

@ -123,7 +123,8 @@ static int rockchip_mmc_set_phase(struct clk_hw *hw, int degrees)
raw_value = delay_num ? ROCKCHIP_MMC_DELAY_SEL : 0;
raw_value |= delay_num << ROCKCHIP_MMC_DELAYNUM_OFFSET;
raw_value |= nineties;
writel(HIWORD_UPDATE(raw_value, 0x07ff, mmc_clock->shift), mmc_clock->reg);
writel(HIWORD_UPDATE(raw_value, 0x07ff, mmc_clock->shift),
mmc_clock->reg);
pr_debug("%s->set_phase(%d) delay_nums=%u reg[0x%p]=0x%03x actual_degrees=%d\n",
clk_hw_get_name(hw), degrees, delay_num,

336
drivers/clk/rockchip/clk-pll.c
View File

@ -46,6 +46,8 @@ struct rockchip_clk_pll {
const struct rockchip_pll_rate_table *rate_table;
unsigned int rate_count;
spinlock_t *lock;
struct rockchip_clk_provider *ctx;
};
#define to_rockchip_clk_pll(_hw) container_of(_hw, struct rockchip_clk_pll, hw)
@ -90,15 +92,10 @@ static long rockchip_pll_round_rate(struct clk_hw *hw,
*/
static int rockchip_pll_wait_lock(struct rockchip_clk_pll *pll)
{
struct regmap *grf = rockchip_clk_get_grf();
struct regmap *grf = pll->ctx->grf;
unsigned int val;
int delay = 24000000, ret;
if (IS_ERR(grf)) {
pr_err("%s: grf regmap not available\n", __func__);
return PTR_ERR(grf);
}
while (delay > 0) {
ret = regmap_read(grf, pll->lock_offset, &val);
if (ret) {
@ -234,7 +231,7 @@ static int rockchip_rk3036_pll_set_params(struct rockchip_clk_pll *pll,
/* wait for the pll to lock */
ret = rockchip_pll_wait_lock(pll);
if (ret) {
pr_warn("%s: pll update unsucessful, trying to restore old params\n",
pr_warn("%s: pll update unsuccessful, trying to restore old params\n",
__func__);
rockchip_rk3036_pll_set_params(pll, &cur);
}
@ -250,17 +247,9 @@ static int rockchip_rk3036_pll_set_rate(struct clk_hw *hw, unsigned long drate,
{
struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
const struct rockchip_pll_rate_table *rate;
unsigned long old_rate = rockchip_rk3036_pll_recalc_rate(hw, prate);
struct regmap *grf = rockchip_clk_get_grf();
if (IS_ERR(grf)) {
pr_debug("%s: grf regmap not available, aborting rate change\n",
__func__);
return PTR_ERR(grf);
}
pr_debug("%s: changing %s from %lu to %lu with a parent rate of %lu\n",
__func__, __clk_get_name(hw->clk), old_rate, drate, prate);
pr_debug("%s: changing %s to %lu with a parent rate of %lu\n",
__func__, __clk_get_name(hw->clk), drate, prate);
/* Get required rate settings from table */
rate = rockchip_get_pll_settings(pll, drate);
@ -473,7 +462,7 @@ static int rockchip_rk3066_pll_set_params(struct rockchip_clk_pll *pll,
/* wait for the pll to lock */
ret = rockchip_pll_wait_lock(pll);
if (ret) {
pr_warn("%s: pll update unsucessful, trying to restore old params\n",
pr_warn("%s: pll update unsuccessful, trying to restore old params\n",
__func__);
rockchip_rk3066_pll_set_params(pll, &cur);
}
@ -489,17 +478,9 @@ static int rockchip_rk3066_pll_set_rate(struct clk_hw *hw, unsigned long drate,
{
struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
const struct rockchip_pll_rate_table *rate;
unsigned long old_rate = rockchip_rk3066_pll_recalc_rate(hw, prate);
struct regmap *grf = rockchip_clk_get_grf();
if (IS_ERR(grf)) {
pr_debug("%s: grf regmap not available, aborting rate change\n",
__func__);
return PTR_ERR(grf);
}
pr_debug("%s: changing %s from %lu to %lu with a parent rate of %lu\n",
__func__, clk_hw_get_name(hw), old_rate, drate, prate);
pr_debug("%s: changing %s to %lu with a parent rate of %lu\n",
__func__, clk_hw_get_name(hw), drate, prate);
/* Get required rate settings from table */
rate = rockchip_get_pll_settings(pll, drate);
@ -563,11 +544,6 @@ static void rockchip_rk3066_pll_init(struct clk_hw *hw)
rate->no, cur.no, rate->nf, cur.nf, rate->nb, cur.nb);
if (rate->nr != cur.nr || rate->no != cur.no || rate->nf != cur.nf
|| rate->nb != cur.nb) {
struct regmap *grf = rockchip_clk_get_grf();
if (IS_ERR(grf))
return;
pr_debug("%s: pll %s: rate params do not match rate table, adjusting\n",
__func__, clk_hw_get_name(hw));
rockchip_rk3066_pll_set_params(pll, rate);
@ -591,16 +567,277 @@ static const struct clk_ops rockchip_rk3066_pll_clk_ops = {
.init = rockchip_rk3066_pll_init,
};
/**
* PLL used in RK3399
*/
#define RK3399_PLLCON(i) (i * 0x4)
#define RK3399_PLLCON0_FBDIV_MASK 0xfff
#define RK3399_PLLCON0_FBDIV_SHIFT 0
#define RK3399_PLLCON1_REFDIV_MASK 0x3f
#define RK3399_PLLCON1_REFDIV_SHIFT 0
#define RK3399_PLLCON1_POSTDIV1_MASK 0x7
#define RK3399_PLLCON1_POSTDIV1_SHIFT 8
#define RK3399_PLLCON1_POSTDIV2_MASK 0x7
#define RK3399_PLLCON1_POSTDIV2_SHIFT 12
#define RK3399_PLLCON2_FRAC_MASK 0xffffff
#define RK3399_PLLCON2_FRAC_SHIFT 0
#define RK3399_PLLCON2_LOCK_STATUS BIT(31)
#define RK3399_PLLCON3_PWRDOWN BIT(0)
#define RK3399_PLLCON3_DSMPD_MASK 0x1
#define RK3399_PLLCON3_DSMPD_SHIFT 3
static int rockchip_rk3399_pll_wait_lock(struct rockchip_clk_pll *pll)
{
u32 pllcon;
int delay = 24000000;
/* poll check the lock status in rk3399 xPLLCON2 */
while (delay > 0) {
pllcon = readl_relaxed(pll->reg_base + RK3399_PLLCON(2));
if (pllcon & RK3399_PLLCON2_LOCK_STATUS)
return 0;
delay--;
}
pr_err("%s: timeout waiting for pll to lock\n", __func__);
return -ETIMEDOUT;
}
static void rockchip_rk3399_pll_get_params(struct rockchip_clk_pll *pll,
struct rockchip_pll_rate_table *rate)
{
u32 pllcon;
pllcon = readl_relaxed(pll->reg_base + RK3399_PLLCON(0));
rate->fbdiv = ((pllcon >> RK3399_PLLCON0_FBDIV_SHIFT)
& RK3399_PLLCON0_FBDIV_MASK);
pllcon = readl_relaxed(pll->reg_base + RK3399_PLLCON(1));
rate->refdiv = ((pllcon >> RK3399_PLLCON1_REFDIV_SHIFT)
& RK3399_PLLCON1_REFDIV_MASK);
rate->postdiv1 = ((pllcon >> RK3399_PLLCON1_POSTDIV1_SHIFT)
& RK3399_PLLCON1_POSTDIV1_MASK);
rate->postdiv2 = ((pllcon >> RK3399_PLLCON1_POSTDIV2_SHIFT)
& RK3399_PLLCON1_POSTDIV2_MASK);
pllcon = readl_relaxed(pll->reg_base + RK3399_PLLCON(2));
rate->frac = ((pllcon >> RK3399_PLLCON2_FRAC_SHIFT)
& RK3399_PLLCON2_FRAC_MASK);
pllcon = readl_relaxed(pll->reg_base + RK3399_PLLCON(3));
rate->dsmpd = ((pllcon >> RK3399_PLLCON3_DSMPD_SHIFT)
& RK3399_PLLCON3_DSMPD_MASK);
}
static unsigned long rockchip_rk3399_pll_recalc_rate(struct clk_hw *hw,
unsigned long prate)
{
struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
struct rockchip_pll_rate_table cur;
u64 rate64 = prate;
rockchip_rk3399_pll_get_params(pll, &cur);
rate64 *= cur.fbdiv;
do_div(rate64, cur.refdiv);
if (cur.dsmpd == 0) {
/* fractional mode */
u64 frac_rate64 = prate * cur.frac;
do_div(frac_rate64, cur.refdiv);
rate64 += frac_rate64 >> 24;
}
do_div(rate64, cur.postdiv1);
do_div(rate64, cur.postdiv2);
return (unsigned long)rate64;
}
static int rockchip_rk3399_pll_set_params(struct rockchip_clk_pll *pll,
const struct rockchip_pll_rate_table *rate)
{
const struct clk_ops *pll_mux_ops = pll->pll_mux_ops;
struct clk_mux *pll_mux = &pll->pll_mux;
struct rockchip_pll_rate_table cur;
u32 pllcon;
int rate_change_remuxed = 0;
int cur_parent;
int ret;
pr_debug("%s: rate settings for %lu fbdiv: %d, postdiv1: %d, refdiv: %d, postdiv2: %d, dsmpd: %d, frac: %d\n",
__func__, rate->rate, rate->fbdiv, rate->postdiv1, rate->refdiv,
rate->postdiv2, rate->dsmpd, rate->frac);
rockchip_rk3399_pll_get_params(pll, &cur);
cur.rate = 0;
cur_parent = pll_mux_ops->get_parent(&pll_mux->hw);
if (cur_parent == PLL_MODE_NORM) {
pll_mux_ops->set_parent(&pll_mux->hw, PLL_MODE_SLOW);
rate_change_remuxed = 1;
}
/* update pll values */
writel_relaxed(HIWORD_UPDATE(rate->fbdiv, RK3399_PLLCON0_FBDIV_MASK,
RK3399_PLLCON0_FBDIV_SHIFT),
pll->reg_base + RK3399_PLLCON(0));
writel_relaxed(HIWORD_UPDATE(rate->refdiv, RK3399_PLLCON1_REFDIV_MASK,
RK3399_PLLCON1_REFDIV_SHIFT) |
HIWORD_UPDATE(rate->postdiv1, RK3399_PLLCON1_POSTDIV1_MASK,
RK3399_PLLCON1_POSTDIV1_SHIFT) |
HIWORD_UPDATE(rate->postdiv2, RK3399_PLLCON1_POSTDIV2_MASK,
RK3399_PLLCON1_POSTDIV2_SHIFT),
pll->reg_base + RK3399_PLLCON(1));
/* xPLL CON2 is not HIWORD_MASK */
pllcon = readl_relaxed(pll->reg_base + RK3399_PLLCON(2));
pllcon &= ~(RK3399_PLLCON2_FRAC_MASK << RK3399_PLLCON2_FRAC_SHIFT);
pllcon |= rate->frac << RK3399_PLLCON2_FRAC_SHIFT;
writel_relaxed(pllcon, pll->reg_base + RK3399_PLLCON(2));
writel_relaxed(HIWORD_UPDATE(rate->dsmpd, RK3399_PLLCON3_DSMPD_MASK,
RK3399_PLLCON3_DSMPD_SHIFT),
pll->reg_base + RK3399_PLLCON(3));
/* wait for the pll to lock */
ret = rockchip_rk3399_pll_wait_lock(pll);
if (ret) {
pr_warn("%s: pll update unsuccessful, trying to restore old params\n",
__func__);
rockchip_rk3399_pll_set_params(pll, &cur);
}
if (rate_change_remuxed)
pll_mux_ops->set_parent(&pll_mux->hw, PLL_MODE_NORM);
return ret;
}
static int rockchip_rk3399_pll_set_rate(struct clk_hw *hw, unsigned long drate,
unsigned long prate)
{
struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
const struct rockchip_pll_rate_table *rate;
pr_debug("%s: changing %s to %lu with a parent rate of %lu\n",
__func__, __clk_get_name(hw->clk), drate, prate);
/* Get required rate settings from table */
rate = rockchip_get_pll_settings(pll, drate);
if (!rate) {
pr_err("%s: Invalid rate : %lu for pll clk %s\n", __func__,
drate, __clk_get_name(hw->clk));
return -EINVAL;
}
return rockchip_rk3399_pll_set_params(pll, rate);
}
static int rockchip_rk3399_pll_enable(struct clk_hw *hw)
{
struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
writel(HIWORD_UPDATE(0, RK3399_PLLCON3_PWRDOWN, 0),
pll->reg_base + RK3399_PLLCON(3));
return 0;
}
static void rockchip_rk3399_pll_disable(struct clk_hw *hw)
{
struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
writel(HIWORD_UPDATE(RK3399_PLLCON3_PWRDOWN,
RK3399_PLLCON3_PWRDOWN, 0),
pll->reg_base + RK3399_PLLCON(3));
}
static int rockchip_rk3399_pll_is_enabled(struct clk_hw *hw)
{
struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
u32 pllcon = readl(pll->reg_base + RK3399_PLLCON(3));
return !(pllcon & RK3399_PLLCON3_PWRDOWN);
}
static void rockchip_rk3399_pll_init(struct clk_hw *hw)
{
struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
const struct rockchip_pll_rate_table *rate;
struct rockchip_pll_rate_table cur;
unsigned long drate;
if (!(pll->flags & ROCKCHIP_PLL_SYNC_RATE))
return;
drate = clk_hw_get_rate(hw);
rate = rockchip_get_pll_settings(pll, drate);
/* when no rate setting for the current rate, rely on clk_set_rate */
if (!rate)
return;
rockchip_rk3399_pll_get_params(pll, &cur);
pr_debug("%s: pll %s@%lu: Hz\n", __func__, __clk_get_name(hw->clk),
drate);
pr_debug("old - fbdiv: %d, postdiv1: %d, refdiv: %d, postdiv2: %d, dsmpd: %d, frac: %d\n",
cur.fbdiv, cur.postdiv1, cur.refdiv, cur.postdiv2,
cur.dsmpd, cur.frac);
pr_debug("new - fbdiv: %d, postdiv1: %d, refdiv: %d, postdiv2: %d, dsmpd: %d, frac: %d\n",
rate->fbdiv, rate->postdiv1, rate->refdiv, rate->postdiv2,
rate->dsmpd, rate->frac);
if (rate->fbdiv != cur.fbdiv || rate->postdiv1 != cur.postdiv1 ||
rate->refdiv != cur.refdiv || rate->postdiv2 != cur.postdiv2 ||
rate->dsmpd != cur.dsmpd || rate->frac != cur.frac) {
struct clk *parent = clk_get_parent(hw->clk);
if (!parent) {
pr_warn("%s: parent of %s not available\n",
__func__, __clk_get_name(hw->clk));
return;
}
pr_debug("%s: pll %s: rate params do not match rate table, adjusting\n",
__func__, __clk_get_name(hw->clk));
rockchip_rk3399_pll_set_params(pll, rate);
}
}
static const struct clk_ops rockchip_rk3399_pll_clk_norate_ops = {
.recalc_rate = rockchip_rk3399_pll_recalc_rate,
.enable = rockchip_rk3399_pll_enable,
.disable = rockchip_rk3399_pll_disable,
.is_enabled = rockchip_rk3399_pll_is_enabled,
};
static const struct clk_ops rockchip_rk3399_pll_clk_ops = {
.recalc_rate = rockchip_rk3399_pll_recalc_rate,
.round_rate = rockchip_pll_round_rate,
.set_rate = rockchip_rk3399_pll_set_rate,
.enable = rockchip_rk3399_pll_enable,
.disable = rockchip_rk3399_pll_disable,
.is_enabled = rockchip_rk3399_pll_is_enabled,
.init = rockchip_rk3399_pll_init,
};
/*
* Common registering of pll clocks
*/
struct clk *rockchip_clk_register_pll(enum rockchip_pll_type pll_type,
struct clk *rockchip_clk_register_pll(struct rockchip_clk_provider *ctx,
enum rockchip_pll_type pll_type,
const char *name, const char *const *parent_names,
u8 num_parents, void __iomem *base, int con_offset,
int grf_lock_offset, int lock_shift, int mode_offset,
int mode_shift, struct rockchip_pll_rate_table *rate_table,
u8 clk_pll_flags, spinlock_t *lock)
u8 num_parents, int con_offset, int grf_lock_offset,
int lock_shift, int mode_offset, int mode_shift,
struct rockchip_pll_rate_table *rate_table,
u8 clk_pll_flags)
{
const char *pll_parents[3];
struct clk_init_data init;
@ -624,14 +861,16 @@ struct clk *rockchip_clk_register_pll(enum rockchip_pll_type pll_type,
/* create the mux on top of the real pll */
pll->pll_mux_ops = &clk_mux_ops;
pll_mux = &pll->pll_mux;
pll_mux->reg = base + mode_offset;
pll_mux->reg = ctx->reg_base + mode_offset;
pll_mux->shift = mode_shift;
pll_mux->mask = PLL_MODE_MASK;
pll_mux->flags = 0;
pll_mux->lock = lock;
pll_mux->lock = &ctx->lock;
pll_mux->hw.init = &init;
if (pll_type == pll_rk3036 || pll_type == pll_rk3066)
if (pll_type == pll_rk3036 ||
pll_type == pll_rk3066 ||
pll_type == pll_rk3399)
pll_mux->flags |= CLK_MUX_HIWORD_MASK;
/* the actual muxing is xin24m, pll-output, xin32k */
@ -677,17 +916,23 @@ struct clk *rockchip_clk_register_pll(enum rockchip_pll_type pll_type,
switch (pll_type) {
case pll_rk3036:
if (!pll->rate_table)
if (!pll->rate_table || IS_ERR(ctx->grf))
init.ops = &rockchip_rk3036_pll_clk_norate_ops;
else
init.ops = &rockchip_rk3036_pll_clk_ops;
break;
case pll_rk3066:
if (!pll->rate_table)
if (!pll->rate_table || IS_ERR(ctx->grf))
init.ops = &rockchip_rk3066_pll_clk_norate_ops;
else
init.ops = &rockchip_rk3066_pll_clk_ops;
break;
case pll_rk3399:
if (!pll->rate_table)
init.ops = &rockchip_rk3399_pll_clk_norate_ops;
else
init.ops = &rockchip_rk3399_pll_clk_ops;
break;
default:
pr_warn("%s: Unknown pll type for pll clk %s\n",
__func__, name);
@ -695,11 +940,12 @@ struct clk *rockchip_clk_register_pll(enum rockchip_pll_type pll_type,
pll->hw.init = &init;
pll->type = pll_type;
pll->reg_base = base + con_offset;
pll->reg_base = ctx->reg_base + con_offset;
pll->lock_offset = grf_lock_offset;
pll->lock_shift = lock_shift;
pll->flags = clk_pll_flags;
pll->lock = lock;
pll->lock = &ctx->lock;
pll->ctx = ctx;
pll_clk = clk_register(NULL, &pll->hw);
if (IS_ERR(pll_clk)) {

21
drivers/clk/rockchip/clk-rk3036.c
View File

@ -113,7 +113,10 @@ static const struct rockchip_cpuclk_reg_data rk3036_cpuclk_data = {
.core_reg = RK2928_CLKSEL_CON(0),
.div_core_shift = 0,
.div_core_mask = 0x1f,
.mux_core_alt = 1,
.mux_core_main = 0,
.mux_core_shift = 7,
.mux_core_mask = 0x1,
};
PNAME(mux_pll_p) = { "xin24m", "xin24m" };
@ -437,6 +440,7 @@ static const char *const rk3036_critical_clocks[] __initconst = {
static void __init rk3036_clk_init(struct device_node *np)
{
struct rockchip_clk_provider *ctx;
void __iomem *reg_base;
struct clk *clk;
@ -446,22 +450,27 @@ static void __init rk3036_clk_init(struct device_node *np)
return;
}
rockchip_clk_init(np, reg_base, CLK_NR_CLKS);
ctx = rockchip_clk_init(np, reg_base, CLK_NR_CLKS);
if (IS_ERR(ctx)) {
pr_err("%s: rockchip clk init failed\n", __func__);
iounmap(reg_base);
return;
}
clk = clk_register_fixed_factor(NULL, "usb480m", "xin24m", 0, 20, 1);
if (IS_ERR(clk))
pr_warn("%s: could not register clock usb480m: %ld\n",
__func__, PTR_ERR(clk));
rockchip_clk_register_plls(rk3036_pll_clks,
rockchip_clk_register_plls(ctx, rk3036_pll_clks,
ARRAY_SIZE(rk3036_pll_clks),
RK3036_GRF_SOC_STATUS0);
rockchip_clk_register_branches(rk3036_clk_branches,
rockchip_clk_register_branches(ctx, rk3036_clk_branches,
ARRAY_SIZE(rk3036_clk_branches));
rockchip_clk_protect_critical(rk3036_critical_clocks,
ARRAY_SIZE(rk3036_critical_clocks));
rockchip_clk_register_armclk(ARMCLK, "armclk",
rockchip_clk_register_armclk(ctx, ARMCLK, "armclk",
mux_armclk_p, ARRAY_SIZE(mux_armclk_p),
&rk3036_cpuclk_data, rk3036_cpuclk_rates,
ARRAY_SIZE(rk3036_cpuclk_rates));
@ -469,6 +478,8 @@ static void __init rk3036_clk_init(struct device_node *np)
rockchip_register_softrst(np, 9, reg_base + RK2928_SOFTRST_CON(0),
ROCKCHIP_SOFTRST_HIWORD_MASK);
rockchip_register_restart_notifier(RK2928_GLB_SRST_FST, NULL);
rockchip_register_restart_notifier(ctx, RK2928_GLB_SRST_FST, NULL);
rockchip_clk_of_add_provider(np, ctx);
}
CLK_OF_DECLARE(rk3036_cru, "rockchip,rk3036-cru", rk3036_clk_init);

51
drivers/clk/rockchip/clk-rk3188.c
View File

@ -155,7 +155,10 @@ static const struct rockchip_cpuclk_reg_data rk3066_cpuclk_data = {
.core_reg = RK2928_CLKSEL_CON(0),
.div_core_shift = 0,
.div_core_mask = 0x1f,
.mux_core_alt = 1,
.mux_core_main = 0,
.mux_core_shift = 8,
.mux_core_mask = 0x1,
};
#define RK3188_DIV_ACLK_CORE_MASK 0x7
@ -191,7 +194,10 @@ static const struct rockchip_cpuclk_reg_data rk3188_cpuclk_data = {
.core_reg = RK2928_CLKSEL_CON(0),
.div_core_shift = 9,
.div_core_mask = 0x1f,
.mux_core_alt = 1,
.mux_core_main = 0,
.mux_core_shift = 8,
.mux_core_mask = 0x1,
};
PNAME(mux_pll_p) = { "xin24m", "xin32k" };
@ -753,57 +759,75 @@ static const char *const rk3188_critical_clocks[] __initconst = {
"hclk_cpubus"
};
static void __init rk3188_common_clk_init(struct device_node *np)
static struct rockchip_clk_provider *__init rk3188_common_clk_init(struct device_node *np)
{
struct rockchip_clk_provider *ctx;
void __iomem *reg_base;
reg_base = of_iomap(np, 0);
if (!reg_base) {
pr_err("%s: could not map cru region\n", __func__);
return;
return ERR_PTR(-ENOMEM);
}
rockchip_clk_init(np, reg_base, CLK_NR_CLKS);
ctx = rockchip_clk_init(np, reg_base, CLK_NR_CLKS);
if (IS_ERR(ctx)) {
pr_err("%s: rockchip clk init failed\n", __func__);
iounmap(reg_base);
return ERR_PTR(-ENOMEM);
}
rockchip_clk_register_branches(common_clk_branches,
rockchip_clk_register_branches(ctx, common_clk_branches,
ARRAY_SIZE(common_clk_branches));
rockchip_register_softrst(np, 9, reg_base + RK2928_SOFTRST_CON(0),
ROCKCHIP_SOFTRST_HIWORD_MASK);
rockchip_register_restart_notifier(RK2928_GLB_SRST_FST, NULL);
rockchip_register_restart_notifier(ctx, RK2928_GLB_SRST_FST, NULL);
return ctx;
}
static void __init rk3066a_clk_init(struct device_node *np)
{
rk3188_common_clk_init(np);
rockchip_clk_register_plls(rk3066_pll_clks,
struct rockchip_clk_provider *ctx;
ctx = rk3188_common_clk_init(np);
if (IS_ERR(ctx))
return;
rockchip_clk_register_plls(ctx, rk3066_pll_clks,
ARRAY_SIZE(rk3066_pll_clks),
RK3066_GRF_SOC_STATUS);
rockchip_clk_register_branches(rk3066a_clk_branches,
rockchip_clk_register_branches(ctx, rk3066a_clk_branches,
ARRAY_SIZE(rk3066a_clk_branches));
rockchip_clk_register_armclk(ARMCLK, "armclk",
rockchip_clk_register_armclk(ctx, ARMCLK, "armclk",
mux_armclk_p, ARRAY_SIZE(mux_armclk_p),
&rk3066_cpuclk_data, rk3066_cpuclk_rates,
ARRAY_SIZE(rk3066_cpuclk_rates));
rockchip_clk_protect_critical(rk3188_critical_clocks,
ARRAY_SIZE(rk3188_critical_clocks));
rockchip_clk_of_add_provider(np, ctx);
}
CLK_OF_DECLARE(rk3066a_cru, "rockchip,rk3066a-cru", rk3066a_clk_init);
static void __init rk3188a_clk_init(struct device_node *np)
{
struct rockchip_clk_provider *ctx;
struct clk *clk1, *clk2;
unsigned long rate;
int ret;
rk3188_common_clk_init(np);
rockchip_clk_register_plls(rk3188_pll_clks,
ctx = rk3188_common_clk_init(np);
if (IS_ERR(ctx))
return;
rockchip_clk_register_plls(ctx, rk3188_pll_clks,
ARRAY_SIZE(rk3188_pll_clks),
RK3188_GRF_SOC_STATUS);
rockchip_clk_register_branches(rk3188_clk_branches,
rockchip_clk_register_branches(ctx, rk3188_clk_branches,
ARRAY_SIZE(rk3188_clk_branches));
rockchip_clk_register_armclk(ARMCLK, "armclk",
rockchip_clk_register_armclk(ctx, ARMCLK, "armclk",
mux_armclk_p, ARRAY_SIZE(mux_armclk_p),
&rk3188_cpuclk_data, rk3188_cpuclk_rates,
ARRAY_SIZE(rk3188_cpuclk_rates));
@ -827,6 +851,7 @@ static void __init rk3188a_clk_init(struct device_node *np)
rockchip_clk_protect_critical(rk3188_critical_clocks,
ARRAY_SIZE(rk3188_critical_clocks));
rockchip_clk_of_add_provider(np, ctx);
}
CLK_OF_DECLARE(rk3188a_cru, "rockchip,rk3188a-cru", rk3188a_clk_init);

21
drivers/clk/rockchip/clk-rk3228.c
View File

@ -111,7 +111,10 @@ static const struct rockchip_cpuclk_reg_data rk3228_cpuclk_data = {
.core_reg = RK2928_CLKSEL_CON(0),
.div_core_shift = 0,
.div_core_mask = 0x1f,
.mux_core_alt = 1,
.mux_core_main = 0,
.mux_core_shift = 6,
.mux_core_mask = 0x1,
};
PNAME(mux_pll_p) = { "clk_24m", "xin24m" };
@ -625,6 +628,7 @@ static const char *const rk3228_critical_clocks[] __initconst = {
static void __init rk3228_clk_init(struct device_node *np)
{
struct rockchip_clk_provider *ctx;
void __iomem *reg_base;
reg_base = of_iomap(np, 0);
@ -633,17 +637,22 @@ static void __init rk3228_clk_init(struct device_node *np)
return;
}
rockchip_clk_init(np, reg_base, CLK_NR_CLKS);
ctx = rockchip_clk_init(np, reg_base, CLK_NR_CLKS);
if (IS_ERR(ctx)) {
pr_err("%s: rockchip clk init failed\n", __func__);
iounmap(reg_base);
return;
}
rockchip_clk_register_plls(rk3228_pll_clks,
rockchip_clk_register_plls(ctx, rk3228_pll_clks,
ARRAY_SIZE(rk3228_pll_clks),
RK3228_GRF_SOC_STATUS0);
rockchip_clk_register_branches(rk3228_clk_branches,
rockchip_clk_register_branches(ctx, rk3228_clk_branches,
ARRAY_SIZE(rk3228_clk_branches));
rockchip_clk_protect_critical(rk3228_critical_clocks,
ARRAY_SIZE(rk3228_critical_clocks));
rockchip_clk_register_armclk(ARMCLK, "armclk",
rockchip_clk_register_armclk(ctx, ARMCLK, "armclk",
mux_armclk_p, ARRAY_SIZE(mux_armclk_p),
&rk3228_cpuclk_data, rk3228_cpuclk_rates,
ARRAY_SIZE(rk3228_cpuclk_rates));
@ -651,6 +660,8 @@ static void __init rk3228_clk_init(struct device_node *np)
rockchip_register_softrst(np, 9, reg_base + RK2928_SOFTRST_CON(0),
ROCKCHIP_SOFTRST_HIWORD_MASK);
rockchip_register_restart_notifier(RK3228_GLB_SRST_FST, NULL);
rockchip_register_restart_notifier(ctx, RK3228_GLB_SRST_FST, NULL);
rockchip_clk_of_add_provider(np, ctx);
}
CLK_OF_DECLARE(rk3228_cru, "rockchip,rk3228-cru", rk3228_clk_init);

23
drivers/clk/rockchip/clk-rk3288.c
View File

@ -165,7 +165,10 @@ static const struct rockchip_cpuclk_reg_data rk3288_cpuclk_data = {
.core_reg = RK3288_CLKSEL_CON(0),
.div_core_shift = 8,
.div_core_mask = 0x1f,
.mux_core_alt = 1,
.mux_core_main = 0,
.mux_core_shift = 15,
.mux_core_mask = 0x1,
};
PNAME(mux_pll_p) = { "xin24m", "xin32k" };
@ -878,6 +881,7 @@ static struct syscore_ops rk3288_clk_syscore_ops = {
static void __init rk3288_clk_init(struct device_node *np)
{
struct rockchip_clk_provider *ctx;
struct clk *clk;
rk3288_cru_base = of_iomap(np, 0);
@ -886,7 +890,12 @@ static void __init rk3288_clk_init(struct device_node *np)
return;
}
rockchip_clk_init(np, rk3288_cru_base, CLK_NR_CLKS);
ctx = rockchip_clk_init(np, rk3288_cru_base, CLK_NR_CLKS);
if (IS_ERR(ctx)) {
pr_err("%s: rockchip clk init failed\n", __func__);
iounmap(rk3288_cru_base);
return;
}
/* Watchdog pclk is controlled by RK3288_SGRF_SOC_CON0[1]. */
clk = clk_register_fixed_factor(NULL, "pclk_wdt", "pclk_pd_alive", 0, 1, 1);
@ -894,17 +903,17 @@ static void __init rk3288_clk_init(struct device_node *np)
pr_warn("%s: could not register clock pclk_wdt: %ld\n",
__func__, PTR_ERR(clk));
else
rockchip_clk_add_lookup(clk, PCLK_WDT);
rockchip_clk_add_lookup(ctx, clk, PCLK_WDT);
rockchip_clk_register_plls(rk3288_pll_clks,
rockchip_clk_register_plls(ctx, rk3288_pll_clks,
ARRAY_SIZE(rk3288_pll_clks),
RK3288_GRF_SOC_STATUS1);
rockchip_clk_register_branches(rk3288_clk_branches,
rockchip_clk_register_branches(ctx, rk3288_clk_branches,
ARRAY_SIZE(rk3288_clk_branches));
rockchip_clk_protect_critical(rk3288_critical_clocks,
ARRAY_SIZE(rk3288_critical_clocks));
rockchip_clk_register_armclk(ARMCLK, "armclk",
rockchip_clk_register_armclk(ctx, ARMCLK, "armclk",
mux_armclk_p, ARRAY_SIZE(mux_armclk_p),
&rk3288_cpuclk_data, rk3288_cpuclk_rates,
ARRAY_SIZE(rk3288_cpuclk_rates));
@ -913,8 +922,10 @@ static void __init rk3288_clk_init(struct device_node *np)
rk3288_cru_base + RK3288_SOFTRST_CON(0),
ROCKCHIP_SOFTRST_HIWORD_MASK);
rockchip_register_restart_notifier(RK3288_GLB_SRST_FST,
rockchip_register_restart_notifier(ctx, RK3288_GLB_SRST_FST,
rk3288_clk_shutdown);
register_syscore_ops(&rk3288_clk_syscore_ops);
rockchip_clk_of_add_provider(np, ctx);
}
CLK_OF_DECLARE(rk3288_cru, "rockchip,rk3288-cru", rk3288_clk_init);

28
drivers/clk/rockchip/clk-rk3368.c
View File

@ -165,14 +165,20 @@ static const struct rockchip_cpuclk_reg_data rk3368_cpuclkb_data = {
.core_reg = RK3368_CLKSEL_CON(0),
.div_core_shift = 0,
.div_core_mask = 0x1f,
.mux_core_alt = 1,
.mux_core_main = 0,
.mux_core_shift = 7,
.mux_core_mask = 0x1,
};
static const struct rockchip_cpuclk_reg_data rk3368_cpuclkl_data = {
.core_reg = RK3368_CLKSEL_CON(2),
.div_core_shift = 0,
.mux_core_alt = 1,
.mux_core_main = 0,
.div_core_mask = 0x1f,
.mux_core_shift = 7,
.mux_core_mask = 0x1,
};
#define RK3368_DIV_ACLKM_MASK 0x1f
@ -856,6 +862,7 @@ static const char *const rk3368_critical_clocks[] __initconst = {
static void __init rk3368_clk_init(struct device_node *np)
{
struct rockchip_clk_provider *ctx;
void __iomem *reg_base;
struct clk *clk;
@ -865,7 +872,12 @@ static void __init rk3368_clk_init(struct device_node *np)
return;
}
rockchip_clk_init(np, reg_base, CLK_NR_CLKS);
ctx = rockchip_clk_init(np, reg_base, CLK_NR_CLKS);
if (IS_ERR(ctx)) {
pr_err("%s: rockchip clk init failed\n", __func__);
iounmap(reg_base);
return;
}
/* Watchdog pclk is controlled by sgrf_soc_con3[7]. */
clk = clk_register_fixed_factor(NULL, "pclk_wdt", "pclk_pd_alive", 0, 1, 1);
@ -873,22 +885,22 @@ static void __init rk3368_clk_init(struct device_node *np)
pr_warn("%s: could not register clock pclk_wdt: %ld\n",
__func__, PTR_ERR(clk));
else
rockchip_clk_add_lookup(clk, PCLK_WDT);
rockchip_clk_add_lookup(ctx, clk, PCLK_WDT);
rockchip_clk_register_plls(rk3368_pll_clks,
rockchip_clk_register_plls(ctx, rk3368_pll_clks,
ARRAY_SIZE(rk3368_pll_clks),
RK3368_GRF_SOC_STATUS0);
rockchip_clk_register_branches(rk3368_clk_branches,
rockchip_clk_register_branches(ctx, rk3368_clk_branches,
ARRAY_SIZE(rk3368_clk_branches));
rockchip_clk_protect_critical(rk3368_critical_clocks,
ARRAY_SIZE(rk3368_critical_clocks));
rockchip_clk_register_armclk(ARMCLKB, "armclkb",
rockchip_clk_register_armclk(ctx, ARMCLKB, "armclkb",
mux_armclkb_p, ARRAY_SIZE(mux_armclkb_p),
&rk3368_cpuclkb_data, rk3368_cpuclkb_rates,
ARRAY_SIZE(rk3368_cpuclkb_rates));
rockchip_clk_register_armclk(ARMCLKL, "armclkl",
rockchip_clk_register_armclk(ctx, ARMCLKL, "armclkl",
mux_armclkl_p, ARRAY_SIZE(mux_armclkl_p),
&rk3368_cpuclkl_data, rk3368_cpuclkl_rates,
ARRAY_SIZE(rk3368_cpuclkl_rates));
@ -896,6 +908,8 @@ static void __init rk3368_clk_init(struct device_node *np)
rockchip_register_softrst(np, 15, reg_base + RK3368_SOFTRST_CON(0),
ROCKCHIP_SOFTRST_HIWORD_MASK);
rockchip_register_restart_notifier(RK3368_GLB_SRST_FST, NULL);
rockchip_register_restart_notifier(ctx, RK3368_GLB_SRST_FST, NULL);
rockchip_clk_of_add_provider(np, ctx);
}
CLK_OF_DECLARE(rk3368_cru, "rockchip,rk3368-cru", rk3368_clk_init);

1573
drivers/clk/rockchip/clk-rk3399.c Normal file
View File

File diff suppressed because it is too large Load Diff

151
drivers/clk/rockchip/clk.c
View File

@ -2,6 +2,9 @@
* Copyright (c) 2014 MundoReader S.L.
* Author: Heiko Stuebner <heiko@sntech.de>
*
* Copyright (c) 2016 Rockchip Electronics Co. Ltd.
* Author: Xing Zheng <zhengxing@rock-chips.com>
*
* based on
*
* samsung/clk.c
@ -39,7 +42,8 @@
* sometimes without one of those components.
*/
static struct clk *rockchip_clk_register_branch(const char *name,
const char *const *parent_names, u8 num_parents, void __iomem *base,
const char *const *parent_names, u8 num_parents,
void __iomem *base,
int muxdiv_offset, u8 mux_shift, u8 mux_width, u8 mux_flags,
u8 div_shift, u8 div_width, u8 div_flags,
struct clk_div_table *div_table, int gate_offset,
@ -136,9 +140,11 @@ static int rockchip_clk_frac_notifier_cb(struct notifier_block *nb,
pr_debug("%s: event %lu, old_rate %lu, new_rate: %lu\n",
__func__, event, ndata->old_rate, ndata->new_rate);
if (event == PRE_RATE_CHANGE) {
frac->rate_change_idx = frac->mux_ops->get_parent(&frac_mux->hw);
frac->rate_change_idx =
frac->mux_ops->get_parent(&frac_mux->hw);
if (frac->rate_change_idx != frac->mux_frac_idx) {
frac->mux_ops->set_parent(&frac_mux->hw, frac->mux_frac_idx);
frac->mux_ops->set_parent(&frac_mux->hw,
frac->mux_frac_idx);
frac->rate_change_remuxed = 1;
}
} else if (event == POST_RATE_CHANGE) {
@ -149,7 +155,8 @@ static int rockchip_clk_frac_notifier_cb(struct notifier_block *nb,
* reaches the mux itself.
*/
if (frac->rate_change_remuxed) {
frac->mux_ops->set_parent(&frac_mux->hw, frac->rate_change_idx);
frac->mux_ops->set_parent(&frac_mux->hw,
frac->rate_change_idx);
frac->rate_change_remuxed = 0;
}
}
@ -157,7 +164,8 @@ static int rockchip_clk_frac_notifier_cb(struct notifier_block *nb,
return notifier_from_errno(ret);
}
static struct clk *rockchip_clk_register_frac_branch(const char *name,
static struct clk *rockchip_clk_register_frac_branch(
struct rockchip_clk_provider *ctx, const char *name,
const char *const *parent_names, u8 num_parents,
void __iomem *base, int muxdiv_offset, u8 div_flags,
int gate_offset, u8 gate_shift, u8 gate_flags,
@ -250,7 +258,7 @@ static struct clk *rockchip_clk_register_frac_branch(const char *name,
if (IS_ERR(mux_clk))
return clk;
rockchip_clk_add_lookup(mux_clk, child->id);
rockchip_clk_add_lookup(ctx, mux_clk, child->id);
/* notifier on the fraction divider to catch rate changes */
if (frac->mux_frac_idx >= 0) {
@ -314,66 +322,82 @@ static struct clk *rockchip_clk_register_factor_branch(const char *name,
return clk;
}
static DEFINE_SPINLOCK(clk_lock);
static struct clk **clk_table;
static void __iomem *reg_base;
static struct clk_onecell_data clk_data;
static struct device_node *cru_node;
static struct regmap *grf;
void __init rockchip_clk_init(struct device_node *np, void __iomem *base,
unsigned long nr_clks)
struct rockchip_clk_provider * __init rockchip_clk_init(struct device_node *np,
void __iomem *base, unsigned long nr_clks)
{
reg_base = base;
cru_node = np;
grf = ERR_PTR(-EPROBE_DEFER);
struct rockchip_clk_provider *ctx;
struct clk **clk_table;
int i;
ctx = kzalloc(sizeof(struct rockchip_clk_provider), GFP_KERNEL);
if (!ctx)
return ERR_PTR(-ENOMEM);
clk_table = kcalloc(nr_clks, sizeof(struct clk *), GFP_KERNEL);
if (!clk_table)
pr_err("%s: could not allocate clock lookup table\n", __func__);
goto err_free;
clk_data.clks = clk_table;
clk_data.clk_num = nr_clks;
of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
for (i = 0; i < nr_clks; ++i)
clk_table[i] = ERR_PTR(-ENOENT);
ctx->reg_base = base;
ctx->clk_data.clks = clk_table;
ctx->clk_data.clk_num = nr_clks;
ctx->cru_node = np;
ctx->grf = ERR_PTR(-EPROBE_DEFER);
spin_lock_init(&ctx->lock);
ctx->grf = syscon_regmap_lookup_by_phandle(ctx->cru_node,
"rockchip,grf");
return ctx;
err_free:
kfree(ctx);
return ERR_PTR(-ENOMEM);
}
struct regmap *rockchip_clk_get_grf(void)
void __init rockchip_clk_of_add_provider(struct device_node *np,
struct rockchip_clk_provider *ctx)
{
if (IS_ERR(grf))
grf = syscon_regmap_lookup_by_phandle(cru_node, "rockchip,grf");
return grf;
if (of_clk_add_provider(np, of_clk_src_onecell_get,
&ctx->clk_data))
pr_err("%s: could not register clk provider\n", __func__);
}
void rockchip_clk_add_lookup(struct clk *clk, unsigned int id)
void rockchip_clk_add_lookup(struct rockchip_clk_provider *ctx,
struct clk *clk, unsigned int id)
{
if (clk_table && id)
clk_table[id] = clk;
if (ctx->clk_data.clks && id)
ctx->clk_data.clks[id] = clk;
}
void __init rockchip_clk_register_plls(struct rockchip_pll_clock *list,
void __init rockchip_clk_register_plls(struct rockchip_clk_provider *ctx,
struct rockchip_pll_clock *list,
unsigned int nr_pll, int grf_lock_offset)
{
struct clk *clk;
int idx;
for (idx = 0; idx < nr_pll; idx++, list++) {
clk = rockchip_clk_register_pll(list->type, list->name,
clk = rockchip_clk_register_pll(ctx, list->type, list->name,
list->parent_names, list->num_parents,
reg_base, list->con_offset, grf_lock_offset,
list->con_offset, grf_lock_offset,
list->lock_shift, list->mode_offset,
list->mode_shift, list->rate_table,
list->pll_flags, &clk_lock);
list->pll_flags);
if (IS_ERR(clk)) {
pr_err("%s: failed to register clock %s\n", __func__,
list->name);
continue;
}
rockchip_clk_add_lookup(clk, list->id);
rockchip_clk_add_lookup(ctx, clk, list->id);
}
}
void __init rockchip_clk_register_branches(
struct rockchip_clk_provider *ctx,
struct rockchip_clk_branch *list,
unsigned int nr_clk)
{
@ -389,56 +413,59 @@ void __init rockchip_clk_register_branches(
case branch_mux:
clk = clk_register_mux(NULL, list->name,
list->parent_names, list->num_parents,
flags, reg_base + list->muxdiv_offset,
flags, ctx->reg_base + list->muxdiv_offset,
list->mux_shift, list->mux_width,
list->mux_flags, &clk_lock);
list->mux_flags, &ctx->lock);
break;
case branch_divider:
if (list->div_table)
clk = clk_register_divider_table(NULL,
list->name, list->parent_names[0],
flags, reg_base + list->muxdiv_offset,
flags,
ctx->reg_base + list->muxdiv_offset,
list->div_shift, list->div_width,
list->div_flags, list->div_table,
&clk_lock);
&ctx->lock);
else
clk = clk_register_divider(NULL, list->name,
list->parent_names[0], flags,
reg_base + list->muxdiv_offset,
ctx->reg_base + list->muxdiv_offset,
list->div_shift, list->div_width,
list->div_flags, &clk_lock);
list->div_flags, &ctx->lock);
break;
case branch_fraction_divider:
clk = rockchip_clk_register_frac_branch(list->name,
clk = rockchip_clk_register_frac_branch(ctx, list->name,
list->parent_names, list->num_parents,
reg_base, list->muxdiv_offset, list->div_flags,
ctx->reg_base, list->muxdiv_offset,
list->div_flags,
list->gate_offset, list->gate_shift,
list->gate_flags, flags, list->child,
&clk_lock);
&ctx->lock);
break;
case branch_gate:
flags |= CLK_SET_RATE_PARENT;
clk = clk_register_gate(NULL, list->name,
list->parent_names[0], flags,
reg_base + list->gate_offset,
list->gate_shift, list->gate_flags, &clk_lock);
ctx->reg_base + list->gate_offset,
list->gate_shift, list->gate_flags, &ctx->lock);
break;
case branch_composite:
clk = rockchip_clk_register_branch(list->name,
list->parent_names, list->num_parents,
reg_base, list->muxdiv_offset, list->mux_shift,
ctx->reg_base, list->muxdiv_offset,
list->mux_shift,
list->mux_width, list->mux_flags,
list->div_shift, list->div_width,
list->div_flags, list->div_table,
list->gate_offset, list->gate_shift,
list->gate_flags, flags, &clk_lock);
list->gate_flags, flags, &ctx->lock);
break;
case branch_mmc:
clk = rockchip_clk_register_mmc(
list->name,
list->parent_names, list->num_parents,
reg_base + list->muxdiv_offset,
ctx->reg_base + list->muxdiv_offset,
list->div_shift
);
break;
@ -446,16 +473,16 @@ void __init rockchip_clk_register_branches(
clk = rockchip_clk_register_inverter(
list->name, list->parent_names,
list->num_parents,
reg_base + list->muxdiv_offset,
list->div_shift, list->div_flags, &clk_lock);
ctx->reg_base + list->muxdiv_offset,
list->div_shift, list->div_flags, &ctx->lock);
break;
case branch_factor:
clk = rockchip_clk_register_factor_branch(
list->name, list->parent_names,
list->num_parents, reg_base,
list->num_parents, ctx->reg_base,
list->div_shift, list->div_width,
list->gate_offset, list->gate_shift,
list->gate_flags, flags, &clk_lock);
list->gate_flags, flags, &ctx->lock);
break;
}
@ -472,11 +499,12 @@ void __init rockchip_clk_register_branches(
continue;
}
rockchip_clk_add_lookup(clk, list->id);
rockchip_clk_add_lookup(ctx, clk, list->id);
}
}
void __init rockchip_clk_register_armclk(unsigned int lookup_id,
void __init rockchip_clk_register_armclk(struct rockchip_clk_provider *ctx,
unsigned int lookup_id,
const char *name, const char *const *parent_names,
u8 num_parents,
const struct rockchip_cpuclk_reg_data *reg_data,
@ -486,15 +514,15 @@ void __init rockchip_clk_register_armclk(unsigned int lookup_id,
struct clk *clk;
clk = rockchip_clk_register_cpuclk(name, parent_names, num_parents,
reg_data, rates, nrates, reg_base,
&clk_lock);
reg_data, rates, nrates,
ctx->reg_base, &ctx->lock);
if (IS_ERR(clk)) {
pr_err("%s: failed to register clock %s: %ld\n",
__func__, name, PTR_ERR(clk));
return;
}
rockchip_clk_add_lookup(clk, lookup_id);
rockchip_clk_add_lookup(ctx, clk, lookup_id);
}
void __init rockchip_clk_protect_critical(const char *const clocks[],
@ -511,6 +539,7 @@ void __init rockchip_clk_protect_critical(const char *const clocks[],
}
}
static void __iomem *rst_base;
static unsigned int reg_restart;
static void (*cb_restart)(void);
static int rockchip_restart_notify(struct notifier_block *this,
@ -519,7 +548,7 @@ static int rockchip_restart_notify(struct notifier_block *this,
if (cb_restart)
cb_restart();
writel(0xfdb9, reg_base + reg_restart);
writel(0xfdb9, rst_base + reg_restart);
return NOTIFY_DONE;
}
@ -528,10 +557,14 @@ static struct notifier_block rockchip_restart_handler = {
.priority = 128,
};
void __init rockchip_register_restart_notifier(unsigned int reg, void (*cb)(void))
void __init
rockchip_register_restart_notifier(struct rockchip_clk_provider *ctx,
unsigned int reg,
void (*cb)(void))
{
int ret;
rst_base = ctx->reg_base;
reg_restart = reg;
cb_restart = cb;
ret = register_restart_handler(&rockchip_restart_handler);

104
drivers/clk/rockchip/clk.h
View File

@ -27,13 +27,13 @@
#define CLK_ROCKCHIP_CLK_H
#include <linux/io.h>
#include <linux/clk-provider.h>
struct clk;
#define HIWORD_UPDATE(val, mask, shift) \
((val) << (shift) | (mask) << ((shift) + 16))
/* register positions shared by RK2928, RK3036, RK3066, RK3188 and RK3228 */
#define RK2928_PLL_CON(x) ((x) * 0x4)
#define RK2928_MODE_CON 0x40
#define RK2928_CLKSEL_CON(x) ((x) * 0x4 + 0x44)
@ -92,9 +92,30 @@ struct clk;
#define RK3368_EMMC_CON0 0x418
#define RK3368_EMMC_CON1 0x41c
#define RK3399_PLL_CON(x) RK2928_PLL_CON(x)
#define RK3399_CLKSEL_CON(x) ((x) * 0x4 + 0x100)
#define RK3399_CLKGATE_CON(x) ((x) * 0x4 + 0x300)
#define RK3399_SOFTRST_CON(x) ((x) * 0x4 + 0x400)
#define RK3399_GLB_SRST_FST 0x500
#define RK3399_GLB_SRST_SND 0x504
#define RK3399_GLB_CNT_TH 0x508
#define RK3399_MISC_CON 0x50c
#define RK3399_RST_CON 0x510
#define RK3399_RST_ST 0x514
#define RK3399_SDMMC_CON0 0x580
#define RK3399_SDMMC_CON1 0x584
#define RK3399_SDIO_CON0 0x588
#define RK3399_SDIO_CON1 0x58c
#define RK3399_PMU_PLL_CON(x) RK2928_PLL_CON(x)
#define RK3399_PMU_CLKSEL_CON(x) ((x) * 0x4 + 0x80)
#define RK3399_PMU_CLKGATE_CON(x) ((x) * 0x4 + 0x100)
#define RK3399_PMU_SOFTRST_CON(x) ((x) * 0x4 + 0x110)
enum rockchip_pll_type {
pll_rk3036,
pll_rk3066,
pll_rk3399,
};
#define RK3036_PLL_RATE(_rate, _refdiv, _fbdiv, _postdiv1, \
@ -127,13 +148,29 @@ enum rockchip_pll_type {
.nb = _nb, \
}
/**
* struct rockchip_clk_provider - information about clock provider
* @reg_base: virtual address for the register base.
* @clk_data: holds clock related data like clk* and number of clocks.
* @cru_node: device-node of the clock-provider
* @grf: regmap of the general-register-files syscon
* @lock: maintains exclusion between callbacks for a given clock-provider.
*/
struct rockchip_clk_provider {
void __iomem *reg_base;
struct clk_onecell_data clk_data;
struct device_node *cru_node;
struct regmap *grf;
spinlock_t lock;
};
struct rockchip_pll_rate_table {
unsigned long rate;
unsigned int nr;
unsigned int nf;
unsigned int no;
unsigned int nb;
/* for RK3036 */
/* for RK3036/RK3399 */
unsigned int fbdiv;
unsigned int postdiv1;
unsigned int refdiv;
@ -143,10 +180,11 @@ struct rockchip_pll_rate_table {
};
/**
* struct rockchip_pll_clock: information about pll clock
* struct rockchip_pll_clock - information about pll clock
* @id: platform specific id of the clock.
* @name: name of this pll clock.
* @parent_name: name of the parent clock.
* @parent_names: name of the parent clock.
* @num_parents: number of parents
* @flags: optional flags for basic clock.
* @con_offset: offset of the register for configuring the PLL.
* @mode_offset: offset of the register for configuring the PLL-mode.
@ -194,12 +232,13 @@ struct rockchip_pll_clock {
.rate_table = _rtable, \
}
struct clk *rockchip_clk_register_pll(enum rockchip_pll_type pll_type,
struct clk *rockchip_clk_register_pll(struct rockchip_clk_provider *ctx,
enum rockchip_pll_type pll_type,
const char *name, const char *const *parent_names,
u8 num_parents, void __iomem *base, int con_offset,
int grf_lock_offset, int lock_shift, int reg_mode,
int mode_shift, struct rockchip_pll_rate_table *rate_table,
u8 clk_pll_flags, spinlock_t *lock);
u8 num_parents, int con_offset, int grf_lock_offset,
int lock_shift, int mode_offset, int mode_shift,
struct rockchip_pll_rate_table *rate_table,
u8 clk_pll_flags);
struct rockchip_cpuclk_clksel {
int reg;
@ -213,18 +252,23 @@ struct rockchip_cpuclk_rate_table {
};
/**
* struct rockchip_cpuclk_reg_data: describes register offsets and masks of the cpuclock
* struct rockchip_cpuclk_reg_data - register offsets and masks of the cpuclock
* @core_reg: register offset of the core settings register
* @div_core_shift: core divider offset used to divide the pll value
* @div_core_mask: core divider mask
* @mux_core_alt: mux value to select alternate parent
* @mux_core_main: mux value to select main parent of core
* @mux_core_shift: offset of the core multiplexer
* @mux_core_mask: core multiplexer mask
*/
struct rockchip_cpuclk_reg_data {
int core_reg;
u8 div_core_shift;
u32 div_core_mask;
int mux_core_reg;
u8 mux_core_alt;
u8 mux_core_main;
u8 mux_core_shift;
u32 mux_core_mask;
};
struct clk *rockchip_clk_register_cpuclk(const char *name,
@ -428,6 +472,22 @@ struct rockchip_clk_branch {
.child = ch, \
}
#define COMPOSITE_FRACMUX_NOGATE(_id, cname, pname, f, mo, df, ch) \
{ \
.id = _id, \
.branch_type = branch_fraction_divider, \
.name = cname, \
.parent_names = (const char *[]){ pname }, \
.num_parents = 1, \
.flags = f, \
.muxdiv_offset = mo, \
.div_shift = 16, \
.div_width = 16, \
.div_flags = df, \
.gate_offset = -1, \
.child = ch, \
}
#define MUX(_id, cname, pnames, f, o, s, w, mf) \
{ \
.id = _id, \
@ -536,21 +596,27 @@ struct rockchip_clk_branch {
.gate_flags = gf, \
}
void rockchip_clk_init(struct device_node *np, void __iomem *base,
unsigned long nr_clks);
struct regmap *rockchip_clk_get_grf(void);
void rockchip_clk_add_lookup(struct clk *clk, unsigned int id);
void rockchip_clk_register_branches(struct rockchip_clk_branch *clk_list,
struct rockchip_clk_provider *rockchip_clk_init(struct device_node *np,
void __iomem *base, unsigned long nr_clks);
void rockchip_clk_of_add_provider(struct device_node *np,
struct rockchip_clk_provider *ctx);
void rockchip_clk_add_lookup(struct rockchip_clk_provider *ctx,
struct clk *clk, unsigned int id);
void rockchip_clk_register_branches(struct rockchip_clk_provider *ctx,
struct rockchip_clk_branch *list,
unsigned int nr_clk);
void rockchip_clk_register_plls(struct rockchip_pll_clock *pll_list,
void rockchip_clk_register_plls(struct rockchip_clk_provider *ctx,
struct rockchip_pll_clock *pll_list,
unsigned int nr_pll, int grf_lock_offset);
void rockchip_clk_register_armclk(unsigned int lookup_id, const char *name,
void rockchip_clk_register_armclk(struct rockchip_clk_provider *ctx,
unsigned int lookup_id, const char *name,
const char *const *parent_names, u8 num_parents,
const struct rockchip_cpuclk_reg_data *reg_data,
const struct rockchip_cpuclk_rate_table *rates,
int nrates);
void rockchip_clk_protect_critical(const char *const clocks[], int nclocks);
void rockchip_register_restart_notifier(unsigned int reg, void (*cb)(void));
void rockchip_register_restart_notifier(struct rockchip_clk_provider *ctx,
unsigned int reg, void (*cb)(void));
#define ROCKCHIP_SOFTRST_HIWORD_MASK BIT(0)

75
drivers/clk/samsung/clk-exynos5420.c
View File

@ -554,8 +554,8 @@ static struct samsung_mux_clock exynos5800_mux_clks[] __initdata = {
};
static struct samsung_div_clock exynos5800_div_clks[] __initdata = {
DIV(0, "dout_aclk400_wcore", "mout_aclk400_wcore", DIV_TOP0, 16, 3),
DIV(CLK_DOUT_ACLK400_WCORE, "dout_aclk400_wcore",
"mout_aclk400_wcore", DIV_TOP0, 16, 3),
DIV(0, "dout_aclk550_cam", "mout_aclk550_cam",
DIV_TOP8, 16, 3),
DIV(0, "dout_aclkfl1_550_cam", "mout_aclkfl1_550_cam",
@ -607,8 +607,8 @@ static struct samsung_mux_clock exynos5420_mux_clks[] __initdata = {
};
static struct samsung_div_clock exynos5420_div_clks[] __initdata = {
DIV(0, "dout_aclk400_wcore", "mout_aclk400_wcore_bpll",
DIV_TOP0, 16, 3),
DIV(CLK_DOUT_ACLK400_WCORE, "dout_aclk400_wcore",
"mout_aclk400_wcore_bpll", DIV_TOP0, 16, 3),
};
static struct samsung_mux_clock exynos5x_mux_clks[] __initdata = {
@ -785,31 +785,47 @@ static struct samsung_div_clock exynos5x_div_clks[] __initdata = {
DIV(0, "div_kfc", "mout_kfc", DIV_KFC0, 0, 3),
DIV(0, "sclk_kpll", "mout_kpll", DIV_KFC0, 24, 3),
DIV(0, "dout_aclk400_isp", "mout_aclk400_isp", DIV_TOP0, 0, 3),
DIV(0, "dout_aclk400_mscl", "mout_aclk400_mscl", DIV_TOP0, 4, 3),
DIV(0, "dout_aclk200", "mout_aclk200", DIV_TOP0, 8, 3),
DIV(0, "dout_aclk200_fsys2", "mout_aclk200_fsys2", DIV_TOP0, 12, 3),
DIV(0, "dout_aclk100_noc", "mout_aclk100_noc", DIV_TOP0, 20, 3),
DIV(0, "dout_pclk200_fsys", "mout_pclk200_fsys", DIV_TOP0, 24, 3),
DIV(0, "dout_aclk200_fsys", "mout_aclk200_fsys", DIV_TOP0, 28, 3),
DIV(CLK_DOUT_ACLK400_ISP, "dout_aclk400_isp", "mout_aclk400_isp",
DIV_TOP0, 0, 3),
DIV(CLK_DOUT_ACLK400_MSCL, "dout_aclk400_mscl", "mout_aclk400_mscl",
DIV_TOP0, 4, 3),
DIV(CLK_DOUT_ACLK200, "dout_aclk200", "mout_aclk200",
DIV_TOP0, 8, 3),
DIV(CLK_DOUT_ACLK200_FSYS2, "dout_aclk200_fsys2", "mout_aclk200_fsys2",
DIV_TOP0, 12, 3),
DIV(CLK_DOUT_ACLK100_NOC, "dout_aclk100_noc", "mout_aclk100_noc",
DIV_TOP0, 20, 3),
DIV(CLK_DOUT_PCLK200_FSYS, "dout_pclk200_fsys", "mout_pclk200_fsys",
DIV_TOP0, 24, 3),
DIV(CLK_DOUT_ACLK200_FSYS, "dout_aclk200_fsys", "mout_aclk200_fsys",
DIV_TOP0, 28, 3),
DIV(CLK_DOUT_ACLK333_432_GSCL, "dout_aclk333_432_gscl",
"mout_aclk333_432_gscl", DIV_TOP1, 0, 3),
DIV(CLK_DOUT_ACLK333_432_ISP, "dout_aclk333_432_isp",
"mout_aclk333_432_isp", DIV_TOP1, 4, 3),
DIV(CLK_DOUT_ACLK66, "dout_aclk66", "mout_aclk66",
DIV_TOP1, 8, 6),
DIV(CLK_DOUT_ACLK333_432_ISP0, "dout_aclk333_432_isp0",
"mout_aclk333_432_isp0", DIV_TOP1, 16, 3),
DIV(CLK_DOUT_ACLK266, "dout_aclk266", "mout_aclk266",
DIV_TOP1, 20, 3),
DIV(CLK_DOUT_ACLK166, "dout_aclk166", "mout_aclk166",
DIV_TOP1, 24, 3),
DIV(CLK_DOUT_ACLK333, "dout_aclk333", "mout_aclk333",
DIV_TOP1, 28, 3),
DIV(0, "dout_aclk333_432_gscl", "mout_aclk333_432_gscl",
DIV_TOP1, 0, 3),
DIV(0, "dout_aclk333_432_isp", "mout_aclk333_432_isp",
DIV_TOP1, 4, 3),
DIV(0, "dout_aclk66", "mout_aclk66", DIV_TOP1, 8, 6),
DIV(0, "dout_aclk333_432_isp0", "mout_aclk333_432_isp0",
DIV_TOP1, 16, 3),
DIV(0, "dout_aclk266", "mout_aclk266", DIV_TOP1, 20, 3),
DIV(0, "dout_aclk166", "mout_aclk166", DIV_TOP1, 24, 3),
DIV(0, "dout_aclk333", "mout_aclk333", DIV_TOP1, 28, 3),
DIV(0, "dout_aclk333_g2d", "mout_aclk333_g2d", DIV_TOP2, 8, 3),
DIV(0, "dout_aclk266_g2d", "mout_aclk266_g2d", DIV_TOP2, 12, 3),
DIV(0, "dout_aclk_g3d", "mout_aclk_g3d", DIV_TOP2, 16, 3),
DIV(0, "dout_aclk300_jpeg", "mout_aclk300_jpeg", DIV_TOP2, 20, 3),
DIV(0, "dout_aclk300_disp1", "mout_aclk300_disp1", DIV_TOP2, 24, 3),
DIV(0, "dout_aclk300_gscl", "mout_aclk300_gscl", DIV_TOP2, 28, 3),
DIV(CLK_DOUT_ACLK333_G2D, "dout_aclk333_g2d", "mout_aclk333_g2d",
DIV_TOP2, 8, 3),
DIV(CLK_DOUT_ACLK266_G2D, "dout_aclk266_g2d", "mout_aclk266_g2d",
DIV_TOP2, 12, 3),
DIV(CLK_DOUT_ACLK_G3D, "dout_aclk_g3d", "mout_aclk_g3d", DIV_TOP2,
16, 3),
DIV(CLK_DOUT_ACLK300_JPEG, "dout_aclk300_jpeg", "mout_aclk300_jpeg",
DIV_TOP2, 20, 3),
DIV(CLK_DOUT_ACLK300_DISP1, "dout_aclk300_disp1",
"mout_aclk300_disp1", DIV_TOP2, 24, 3),
DIV(CLK_DOUT_ACLK300_GSCL, "dout_aclk300_gscl", "mout_aclk300_gscl",
DIV_TOP2, 28, 3),
/* DISP1 Block */
DIV(0, "dout_fimd1", "mout_fimd1_final", DIV_DISP10, 0, 4),
@ -817,7 +833,8 @@ static struct samsung_div_clock exynos5x_div_clks[] __initdata = {
DIV(0, "dout_dp1", "mout_dp1", DIV_DISP10, 24, 4),
DIV(CLK_DOUT_PIXEL, "dout_hdmi_pixel", "mout_pixel", DIV_DISP10, 28, 4),
DIV(0, "dout_disp1_blk", "aclk200_disp1", DIV2_RATIO0, 16, 2),
DIV(0, "dout_aclk400_disp1", "mout_aclk400_disp1", DIV_TOP2, 4, 3),
DIV(CLK_DOUT_ACLK400_DISP1, "dout_aclk400_disp1",
"mout_aclk400_disp1", DIV_TOP2, 4, 3),
/* Audio Block */
DIV(0, "dout_maudio0", "mout_maudio0", DIV_MAU, 20, 4),

7
drivers/clk/sirf/clk-atlas6.c
View File

@ -130,10 +130,9 @@ static void __init atlas6_clk_init(struct device_node *np)
panic("unable to map clkc registers\n");
/* These are always available (RTC and 26MHz OSC)*/
atlas6_clks[rtc] = clk_register_fixed_rate(NULL, "rtc", NULL,
CLK_IS_ROOT, 32768);
atlas6_clks[osc] = clk_register_fixed_rate(NULL, "osc", NULL,
CLK_IS_ROOT, 26000000);
atlas6_clks[rtc] = clk_register_fixed_rate(NULL, "rtc", NULL, 0, 32768);
atlas6_clks[osc] = clk_register_fixed_rate(NULL, "osc", NULL, 0,
26000000);
for (i = pll1; i < maxclk; i++) {
atlas6_clks[i] = clk_register(NULL, atlas6_clk_hw_array[i]);

7
drivers/clk/sirf/clk-prima2.c
View File

@ -129,10 +129,9 @@ static void __init prima2_clk_init(struct device_node *np)
panic("unable to map clkc registers\n");
/* These are always available (RTC and 26MHz OSC)*/
prima2_clks[rtc] = clk_register_fixed_rate(NULL, "rtc", NULL,
CLK_IS_ROOT, 32768);
prima2_clks[osc] = clk_register_fixed_rate(NULL, "osc", NULL,
CLK_IS_ROOT, 26000000);
prima2_clks[rtc] = clk_register_fixed_rate(NULL, "rtc", NULL, 0, 32768);
prima2_clks[osc] = clk_register_fixed_rate(NULL, "osc", NULL, 0,
26000000);
for (i = pll1; i < maxclk; i++) {
prima2_clks[i] = clk_register(NULL, prima2_clk_hw_array[i]);

3
drivers/clk/sunxi/Makefile
View File

@ -11,6 +11,9 @@ obj-y += clk-a10-ve.o
obj-y += clk-a20-gmac.o
obj-y += clk-mod0.o
obj-y += clk-simple-gates.o
obj-y += clk-sun4i-display.o
obj-y += clk-sun4i-pll3.o
obj-y += clk-sun4i-tcon-ch1.o
obj-y += clk-sun8i-bus-gates.o
obj-y += clk-sun8i-mbus.o
obj-y += clk-sun9i-core.o

3
drivers/clk/sunxi/clk-a10-hosc.c
View File

@ -54,8 +54,7 @@ static void __init sun4i_osc_clk_setup(struct device_node *node)
NULL, 0,
NULL, NULL,
&fixed->hw, &clk_fixed_rate_ops,
&gate->hw, &clk_gate_ops,
CLK_IS_ROOT);
&gate->hw, &clk_gate_ops, 0);
if (IS_ERR(clk))
goto err_free_gate;

2
drivers/clk/sunxi/clk-a10-mod1.c
View File

@ -62,7 +62,7 @@ static void __init sun4i_mod1_clk_setup(struct device_node *node)
clk = clk_register_composite(NULL, clk_name, parents, i,
&mux->hw, &clk_mux_ops,
NULL, NULL,
&gate->hw, &clk_gate_ops, 0);
&gate->hw, &clk_gate_ops, CLK_SET_RATE_PARENT);
if (IS_ERR(clk))
goto err_free_gate;

261
drivers/clk/sunxi/clk-sun4i-display.c Normal file
View File

@ -0,0 +1,261 @@
/*
* Copyright 2015 Maxime Ripard
*
* Maxime Ripard <maxime.ripard@free-electrons.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/clk-provider.h>
#include <linux/kernel.h>
#include <linux/of_address.h>
#include <linux/reset-controller.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
struct sun4i_a10_display_clk_data {
bool has_div;
u8 num_rst;
u8 parents;
u8 offset_en;
u8 offset_div;
u8 offset_mux;
u8 offset_rst;
u8 width_div;
u8 width_mux;
};
struct reset_data {
void __iomem *reg;
spinlock_t *lock;
struct reset_controller_dev rcdev;
u8 offset;
};
static DEFINE_SPINLOCK(sun4i_a10_display_lock);
static inline struct reset_data *rcdev_to_reset_data(struct reset_controller_dev *rcdev)
{
return container_of(rcdev, struct reset_data, rcdev);
};
static int sun4i_a10_display_assert(struct reset_controller_dev *rcdev,
unsigned long id)
{
struct reset_data *data = rcdev_to_reset_data(rcdev);
unsigned long flags;
u32 reg;
spin_lock_irqsave(data->lock, flags);
reg = readl(data->reg);
writel(reg & ~BIT(data->offset + id), data->reg);
spin_unlock_irqrestore(data->lock, flags);
return 0;
}
static int sun4i_a10_display_deassert(struct reset_controller_dev *rcdev,
unsigned long id)
{
struct reset_data *data = rcdev_to_reset_data(rcdev);
unsigned long flags;
u32 reg;
spin_lock_irqsave(data->lock, flags);
reg = readl(data->reg);
writel(reg | BIT(data->offset + id), data->reg);
spin_unlock_irqrestore(data->lock, flags);
return 0;
}
static int sun4i_a10_display_status(struct reset_controller_dev *rcdev,
unsigned long id)
{
struct reset_data *data = rcdev_to_reset_data(rcdev);
return !(readl(data->reg) & BIT(data->offset + id));
}
static const struct reset_control_ops sun4i_a10_display_reset_ops = {
.assert = sun4i_a10_display_assert,
.deassert = sun4i_a10_display_deassert,
.status = sun4i_a10_display_status,
};
static int sun4i_a10_display_reset_xlate(struct reset_controller_dev *rcdev,
const struct of_phandle_args *spec)
{
/* We only have a single reset signal */
return 0;
}
static void __init sun4i_a10_display_init(struct device_node *node,
const struct sun4i_a10_display_clk_data *data)
{
const char *parents[4];
const char *clk_name = node->name;
struct reset_data *reset_data;
struct clk_divider *div = NULL;
struct clk_gate *gate;
struct resource res;
struct clk_mux *mux;
void __iomem *reg;
struct clk *clk;
int ret;
of_property_read_string(node, "clock-output-names", &clk_name);
reg = of_io_request_and_map(node, 0, of_node_full_name(node));
if (IS_ERR(reg)) {
pr_err("%s: Could not map the clock registers\n", clk_name);
return;
}
ret = of_clk_parent_fill(node, parents, data->parents);
if (ret != data->parents) {
pr_err("%s: Could not retrieve the parents\n", clk_name);
goto unmap;
}
mux = kzalloc(sizeof(*mux), GFP_KERNEL);
if (!mux)
goto unmap;
mux->reg = reg;
mux->shift = data->offset_mux;
mux->mask = (1 << data->width_mux) - 1;
mux->lock = &sun4i_a10_display_lock;
gate = kzalloc(sizeof(*gate), GFP_KERNEL);
if (!gate)
goto free_mux;
gate->reg = reg;
gate->bit_idx = data->offset_en;
gate->lock = &sun4i_a10_display_lock;
if (data->has_div) {
div = kzalloc(sizeof(*div), GFP_KERNEL);
if (!div)
goto free_gate;
div->reg = reg;
div->shift = data->offset_div;
div->width = data->width_div;
div->lock = &sun4i_a10_display_lock;
}
clk = clk_register_composite(NULL, clk_name,
parents, data->parents,
&mux->hw, &clk_mux_ops,
data->has_div ? &div->hw : NULL,
data->has_div ? &clk_divider_ops : NULL,
&gate->hw, &clk_gate_ops,
0);
if (IS_ERR(clk)) {
pr_err("%s: Couldn't register the clock\n", clk_name);
goto free_div;
}
ret = of_clk_add_provider(node, of_clk_src_simple_get, clk);
if (ret) {
pr_err("%s: Couldn't register DT provider\n", clk_name);
goto free_clk;
}
if (!data->num_rst)
return;
reset_data = kzalloc(sizeof(*reset_data), GFP_KERNEL);
if (!reset_data)
goto free_of_clk;
reset_data->reg = reg;
reset_data->offset = data->offset_rst;
reset_data->lock = &sun4i_a10_display_lock;
reset_data->rcdev.nr_resets = data->num_rst;
reset_data->rcdev.ops = &sun4i_a10_display_reset_ops;
reset_data->rcdev.of_node = node;
if (data->num_rst == 1) {
reset_data->rcdev.of_reset_n_cells = 0;
reset_data->rcdev.of_xlate = &sun4i_a10_display_reset_xlate;
} else {
reset_data->rcdev.of_reset_n_cells = 1;
}
if (reset_controller_register(&reset_data->rcdev)) {
pr_err("%s: Couldn't register the reset controller\n",
clk_name);
goto free_reset;
}
return;
free_reset:
kfree(reset_data);
free_of_clk:
of_clk_del_provider(node);
free_clk:
clk_unregister_composite(clk);
free_div:
kfree(div);
free_gate:
kfree(gate);
free_mux:
kfree(mux);
unmap:
iounmap(reg);
of_address_to_resource(node, 0, &res);
release_mem_region(res.start, resource_size(&res));
}
static const struct sun4i_a10_display_clk_data sun4i_a10_tcon_ch0_data __initconst = {
.num_rst = 2,
.parents = 4,
.offset_en = 31,
.offset_rst = 29,
.offset_mux = 24,
.width_mux = 2,
};
static void __init sun4i_a10_tcon_ch0_setup(struct device_node *node)
{
sun4i_a10_display_init(node, &sun4i_a10_tcon_ch0_data);
}
CLK_OF_DECLARE(sun4i_a10_tcon_ch0, "allwinner,sun4i-a10-tcon-ch0-clk",
sun4i_a10_tcon_ch0_setup);
static const struct sun4i_a10_display_clk_data sun4i_a10_display_data __initconst = {
.has_div = true,
.num_rst = 1,
.parents = 3,
.offset_en = 31,
.offset_rst = 30,
.offset_mux = 24,
.offset_div = 0,
.width_mux = 2,
.width_div = 4,
};
static void __init sun4i_a10_display_setup(struct device_node *node)
{
sun4i_a10_display_init(node, &sun4i_a10_display_data);
}
CLK_OF_DECLARE(sun4i_a10_display, "allwinner,sun4i-a10-display-clk",
sun4i_a10_display_setup);

98
drivers/clk/sunxi/clk-sun4i-pll3.c Normal file
View File

@ -0,0 +1,98 @@
/*
* Copyright 2015 Maxime Ripard
*
* Maxime Ripard <maxime.ripard@free-electrons.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/clk-provider.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#define SUN4I_A10_PLL3_GATE_BIT 31
#define SUN4I_A10_PLL3_DIV_WIDTH 7
#define SUN4I_A10_PLL3_DIV_SHIFT 0
static DEFINE_SPINLOCK(sun4i_a10_pll3_lock);
static void __init sun4i_a10_pll3_setup(struct device_node *node)
{
const char *clk_name = node->name, *parent;
struct clk_multiplier *mult;
struct clk_gate *gate;
struct resource res;
void __iomem *reg;
struct clk *clk;
int ret;
of_property_read_string(node, "clock-output-names", &clk_name);
parent = of_clk_get_parent_name(node, 0);
reg = of_io_request_and_map(node, 0, of_node_full_name(node));
if (IS_ERR(reg)) {
pr_err("%s: Could not map the clock registers\n", clk_name);
return;
}
gate = kzalloc(sizeof(*gate), GFP_KERNEL);
if (!gate)
goto err_unmap;
gate->reg = reg;
gate->bit_idx = SUN4I_A10_PLL3_GATE_BIT;
gate->lock = &sun4i_a10_pll3_lock;
mult = kzalloc(sizeof(*mult), GFP_KERNEL);
if (!mult)
goto err_free_gate;
mult->reg = reg;
mult->shift = SUN4I_A10_PLL3_DIV_SHIFT;
mult->width = SUN4I_A10_PLL3_DIV_WIDTH;
mult->lock = &sun4i_a10_pll3_lock;
clk = clk_register_composite(NULL, clk_name,
&parent, 1,
NULL, NULL,
&mult->hw, &clk_multiplier_ops,
&gate->hw, &clk_gate_ops,
0);
if (IS_ERR(clk)) {
pr_err("%s: Couldn't register the clock\n", clk_name);
goto err_free_mult;
}
ret = of_clk_add_provider(node, of_clk_src_simple_get, clk);
if (ret) {
pr_err("%s: Couldn't register DT provider\n",
clk_name);
goto err_clk_unregister;
}
return;
err_clk_unregister:
clk_unregister_composite(clk);
err_free_mult:
kfree(mult);
err_free_gate:
kfree(gate);
err_unmap:
iounmap(reg);
of_address_to_resource(node, 0, &res);
release_mem_region(res.start, resource_size(&res));
}
CLK_OF_DECLARE(sun4i_a10_pll3, "allwinner,sun4i-a10-pll3-clk",
sun4i_a10_pll3_setup);

300
drivers/clk/sunxi/clk-sun4i-tcon-ch1.c Normal file
View File

@ -0,0 +1,300 @@
/*
* Copyright 2015 Maxime Ripard
*
* Maxime Ripard <maxime.ripard@free-electrons.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/clk-provider.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#define TCON_CH1_SCLK2_PARENTS 4
#define TCON_CH1_SCLK2_GATE_BIT BIT(31)
#define TCON_CH1_SCLK2_MUX_MASK 3
#define TCON_CH1_SCLK2_MUX_SHIFT 24
#define TCON_CH1_SCLK2_DIV_MASK 0xf
#define TCON_CH1_SCLK2_DIV_SHIFT 0
#define TCON_CH1_SCLK1_GATE_BIT BIT(15)
#define TCON_CH1_SCLK1_HALF_BIT BIT(11)
struct tcon_ch1_clk {
struct clk_hw hw;
spinlock_t lock;
void __iomem *reg;
};
#define hw_to_tclk(hw) container_of(hw, struct tcon_ch1_clk, hw)
static void tcon_ch1_disable(struct clk_hw *hw)
{
struct tcon_ch1_clk *tclk = hw_to_tclk(hw);
unsigned long flags;
u32 reg;
spin_lock_irqsave(&tclk->lock, flags);
reg = readl(tclk->reg);
reg &= ~(TCON_CH1_SCLK2_GATE_BIT | TCON_CH1_SCLK1_GATE_BIT);
writel(reg, tclk->reg);
spin_unlock_irqrestore(&tclk->lock, flags);
}
static int tcon_ch1_enable(struct clk_hw *hw)
{
struct tcon_ch1_clk *tclk = hw_to_tclk(hw);
unsigned long flags;
u32 reg;
spin_lock_irqsave(&tclk->lock, flags);
reg = readl(tclk->reg);
reg |= TCON_CH1_SCLK2_GATE_BIT | TCON_CH1_SCLK1_GATE_BIT;
writel(reg, tclk->reg);
spin_unlock_irqrestore(&tclk->lock, flags);
return 0;
}
static int tcon_ch1_is_enabled(struct clk_hw *hw)
{
struct tcon_ch1_clk *tclk = hw_to_tclk(hw);
u32 reg;
reg = readl(tclk->reg);
return reg & (TCON_CH1_SCLK2_GATE_BIT | TCON_CH1_SCLK1_GATE_BIT);
}
static u8 tcon_ch1_get_parent(struct clk_hw *hw)
{
struct tcon_ch1_clk *tclk = hw_to_tclk(hw);
int num_parents = clk_hw_get_num_parents(hw);
u32 reg;
reg = readl(tclk->reg) >> TCON_CH1_SCLK2_MUX_SHIFT;
reg &= reg >> TCON_CH1_SCLK2_MUX_MASK;
if (reg >= num_parents)
return -EINVAL;
return reg;
}
static int tcon_ch1_set_parent(struct clk_hw *hw, u8 index)
{
struct tcon_ch1_clk *tclk = hw_to_tclk(hw);
unsigned long flags;
u32 reg;
spin_lock_irqsave(&tclk->lock, flags);
reg = readl(tclk->reg);
reg &= ~(TCON_CH1_SCLK2_MUX_MASK << TCON_CH1_SCLK2_MUX_SHIFT);
reg |= index << TCON_CH1_SCLK2_MUX_SHIFT;
writel(reg, tclk->reg);
spin_unlock_irqrestore(&tclk->lock, flags);
return 0;
};
static unsigned long tcon_ch1_calc_divider(unsigned long rate,
unsigned long parent_rate,
u8 *div,
bool *half)
{
unsigned long best_rate = 0;
u8 best_m = 0, m;
bool is_double;
for (m = 1; m < 16; m++) {
u8 d;
for (d = 1; d < 3; d++) {
unsigned long tmp_rate;
tmp_rate = parent_rate / m / d;
if (tmp_rate > rate)
continue;
if (!best_rate ||
(rate - tmp_rate) < (rate - best_rate)) {
best_rate = tmp_rate;
best_m = m;
is_double = d;
}
}
}
if (div && half) {
*div = best_m;
*half = is_double;
}
return best_rate;
}
static int tcon_ch1_determine_rate(struct clk_hw *hw,
struct clk_rate_request *req)
{
long best_rate = -EINVAL;
int i;
for (i = 0; i < clk_hw_get_num_parents(hw); i++) {
unsigned long parent_rate;
unsigned long tmp_rate;
struct clk_hw *parent;
parent = clk_hw_get_parent_by_index(hw, i);
if (!parent)
continue;
parent_rate = clk_hw_get_rate(parent);
tmp_rate = tcon_ch1_calc_divider(req->rate, parent_rate,
NULL, NULL);
if (best_rate < 0 ||
(req->rate - tmp_rate) < (req->rate - best_rate)) {
best_rate = tmp_rate;
req->best_parent_rate = parent_rate;
req->best_parent_hw = parent;
}
}
if (best_rate < 0)
return best_rate;
req->rate = best_rate;
return 0;
}
static unsigned long tcon_ch1_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct tcon_ch1_clk *tclk = hw_to_tclk(hw);
u32 reg;
reg = readl(tclk->reg);
parent_rate /= (reg & TCON_CH1_SCLK2_DIV_MASK) + 1;
if (reg & TCON_CH1_SCLK1_HALF_BIT)
parent_rate /= 2;
return parent_rate;
}
static int tcon_ch1_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
struct tcon_ch1_clk *tclk = hw_to_tclk(hw);
unsigned long flags;
bool half;
u8 div_m;
u32 reg;
tcon_ch1_calc_divider(rate, parent_rate, &div_m, &half);
spin_lock_irqsave(&tclk->lock, flags);
reg = readl(tclk->reg);
reg &= ~(TCON_CH1_SCLK2_DIV_MASK | TCON_CH1_SCLK1_HALF_BIT);
reg |= (div_m - 1) & TCON_CH1_SCLK2_DIV_MASK;
if (half)
reg |= TCON_CH1_SCLK1_HALF_BIT;
writel(reg, tclk->reg);
spin_unlock_irqrestore(&tclk->lock, flags);
return 0;
}
static const struct clk_ops tcon_ch1_ops = {
.disable = tcon_ch1_disable,
.enable = tcon_ch1_enable,
.is_enabled = tcon_ch1_is_enabled,
.get_parent = tcon_ch1_get_parent,
.set_parent = tcon_ch1_set_parent,
.determine_rate = tcon_ch1_determine_rate,
.recalc_rate = tcon_ch1_recalc_rate,
.set_rate = tcon_ch1_set_rate,
};
static void __init tcon_ch1_setup(struct device_node *node)
{
const char *parents[TCON_CH1_SCLK2_PARENTS];
const char *clk_name = node->name;
struct clk_init_data init;
struct tcon_ch1_clk *tclk;
struct resource res;
struct clk *clk;
void __iomem *reg;
int ret;
of_property_read_string(node, "clock-output-names", &clk_name);
reg = of_io_request_and_map(node, 0, of_node_full_name(node));
if (IS_ERR(reg)) {
pr_err("%s: Could not map the clock registers\n", clk_name);
return;
}
ret = of_clk_parent_fill(node, parents, TCON_CH1_SCLK2_PARENTS);
if (ret != TCON_CH1_SCLK2_PARENTS) {
pr_err("%s Could not retrieve the parents\n", clk_name);
goto err_unmap;
}
tclk = kzalloc(sizeof(*tclk), GFP_KERNEL);
if (!tclk)
goto err_unmap;
init.name = clk_name;
init.ops = &tcon_ch1_ops;
init.parent_names = parents;
init.num_parents = TCON_CH1_SCLK2_PARENTS;
init.flags = CLK_SET_RATE_PARENT;
tclk->reg = reg;
tclk->hw.init = &init;
spin_lock_init(&tclk->lock);
clk = clk_register(NULL, &tclk->hw);
if (IS_ERR(clk)) {
pr_err("%s: Couldn't register the clock\n", clk_name);
goto err_free_data;
}
ret = of_clk_add_provider(node, of_clk_src_simple_get, clk);
if (ret) {
pr_err("%s: Couldn't register our clock provider\n", clk_name);
goto err_unregister_clk;
}
return;
err_unregister_clk:
clk_unregister(clk);
err_free_data:
kfree(tclk);
err_unmap:
iounmap(reg);
of_address_to_resource(node, 0, &res);
release_mem_region(res.start, resource_size(&res));
}
CLK_OF_DECLARE(tcon_ch1, "allwinner,sun4i-a10-tcon-ch1-clk",
tcon_ch1_setup);

2
drivers/clk/sunxi/clk-sun9i-mmc.c
View File

@ -106,7 +106,7 @@ static int sun9i_a80_mmc_config_clk_probe(struct platform_device *pdev)
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
/* one clock/reset pair per word */
count = DIV_ROUND_UP((r->end - r->start + 1), SUN9I_MMC_WIDTH);
count = DIV_ROUND_UP((resource_size(r)), SUN9I_MMC_WIDTH);
data->membase = devm_ioremap_resource(&pdev->dev, r);
if (IS_ERR(data->membase))
return PTR_ERR(data->membase);

79
drivers/clk/sunxi/clk-sunxi.c
View File

@ -523,21 +523,12 @@ static const struct factors_data sun4i_pll5_data __initconst = {
.enable = 31,
.table = &sun4i_pll5_config,
.getter = sun4i_get_pll5_factors,
.name = "pll5",
};
static const struct factors_data sun4i_pll6_data __initconst = {
.enable = 31,
.table = &sun4i_pll5_config,
.getter = sun4i_get_pll5_factors,
.name = "pll6",
};
static const struct factors_data sun6i_a31_pll6_data __initconst = {
.enable = 31,
.table = &sun6i_a31_pll6_config,
.getter = sun6i_a31_get_pll6_factors,
.name = "pll6x2",
};
static const struct factors_data sun5i_a13_ahb_data __initconst = {
@ -933,7 +924,7 @@ static const struct divs_data pll5_divs_data __initconst = {
};
static const struct divs_data pll6_divs_data __initconst = {
.factors = &sun4i_pll6_data,
.factors = &sun4i_pll5_data,
.ndivs = 4,
.div = {
{ .shift = 0, .table = pll6_sata_tbl, .gate = 14 }, /* M, SATA */
@ -975,6 +966,8 @@ static struct clk ** __init sunxi_divs_clk_setup(struct device_node *node,
struct clk_gate *gate = NULL;
struct clk_fixed_factor *fix_factor;
struct clk_divider *divider;
struct factors_data factors = *data->factors;
char *derived_name = NULL;
void __iomem *reg;
int ndivs = SUNXI_DIVS_MAX_QTY, i = 0;
int flags, clkflags;
@ -983,11 +976,37 @@ static struct clk ** __init sunxi_divs_clk_setup(struct device_node *node,
if (data->ndivs)
ndivs = data->ndivs;
/* Try to find a name for base factor clock */
for (i = 0; i < ndivs; i++) {
if (data->div[i].self) {
of_property_read_string_index(node, "clock-output-names",
i, &factors.name);
break;
}
}
/* If we don't have a .self clk use the first output-name up to '_' */
if (factors.name == NULL) {
char *endp;
of_property_read_string_index(node, "clock-output-names",
0, &clk_name);
endp = strchr(clk_name, '_');
if (endp) {
derived_name = kstrndup(clk_name, endp - clk_name,
GFP_KERNEL);
factors.name = derived_name;
} else {
factors.name = clk_name;
}
}
/* Set up factor clock that we will be dividing */
pclk = sunxi_factors_clk_setup(node, data->factors);
pclk = sunxi_factors_clk_setup(node, &factors);
if (!pclk)
return NULL;
parent = __clk_get_name(pclk);
kfree(derived_name);
reg = of_iomap(node, 0);
if (!reg) {
@ -1127,3 +1146,41 @@ static void __init sun6i_pll6_clk_setup(struct device_node *node)
}
CLK_OF_DECLARE(sun6i_pll6, "allwinner,sun6i-a31-pll6-clk",
sun6i_pll6_clk_setup);
/*
* sun6i display
*
* rate = parent_rate / (m + 1);
*/
static void sun6i_display_factors(struct factors_request *req)
{
u8 m;
if (req->rate > req->parent_rate)
req->rate = req->parent_rate;
m = DIV_ROUND_UP(req->parent_rate, req->rate);
req->rate = req->parent_rate / m;
req->m = m - 1;
}
static const struct clk_factors_config sun6i_display_config = {
.mshift = 0,
.mwidth = 4,
};
static const struct factors_data sun6i_display_data __initconst = {
.enable = 31,
.mux = 24,
.muxmask = BIT(2) | BIT(1) | BIT(0),
.table = &sun6i_display_config,
.getter = sun6i_display_factors,
};
static void __init sun6i_display_setup(struct device_node *node)
{
sunxi_factors_clk_setup(node, &sun6i_display_data);
}
CLK_OF_DECLARE(sun6i_display, "allwinner,sun6i-a31-display-clk",
sun6i_display_setup);

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