LS2080A is the first implementation of the chassis 3 clockgen, which
has a different register layout than previous chips. It is also little
endian, unlike previous chips.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
The device tree should describe the chips (or chip-like subblocks) in
the system, but it generally does not describe individual registers --
it should identify, rather than describe, a programming interface.
This has not been the case with the QorIQ clockgen nodes. The
knowledge of what each bit setting of CLKCnCSR means is encoded in
three places (binding, pll node, and mux node), and the last also needs
to know which options are valid on a particular chip. All three of
these locations are considered stable ABI, making it difficult to fix
mistakes (of which I have found several), much less refactor the
abstraction to be able to address problems, limitations, or new chips.
Under the current binding, a pll clock specifier of 2 means that the
PLL is divided by 4 -- and the driver implements this, unless there
happen to be four clock-output-names rather than 3, in which case it
interprets it as PLL divided by 3. This does not appear in the binding
documentation at all. That hack is now considered stable ABI.
The current device tree nodes contain errors, such as saying that
T1040 can set a core clock to PLL/4 when only PLL and PLL/2 are options.
The current binding also ignores some restrictions on clock selection,
such as p5020's requirement that if a core uses the "wrong" PLL, that
PLL must be clocked lower than the "correct" PLL and be at most 80% of
the rated CPU frequency.
Possibly because of the lack of the ability to express such nuance in
the binding, some valid options are omitted from the device trees, such
as the ability on p4080 to run cores 0-3 from PLL3 and cores 4-7 from
PLL1 (again, only if they are at most 80% of rated CPU frequency).
This omission, combined with excessive caution in the cpufreq driver
(addressed in a subsequent patch), means that currently on a 1500 MHz
p4080 with typical PLL configuration, cpufreq can lower the frequency
to 1200 MHz on half the CPUs and do nothing on the others. With this
patchset, all CPUs can be lowered to 1200 MHz on a rev2 p4080, and on a
rev3 p4080 half can be lowered to 750 MHz and the other half to 600
MHz.
The current binding only deals with CPU clocks. To describe FMan in
the device tree, we need to describe its clock. Some chips have
additional muxes that work like the CPU muxes, but are not described in
the device tree. Others require inspecting the Reset Control Word to
determine which PLL is used. Rather than continue to extend this mess,
replace it. Have the driver bind to the chip-specific clockgen
compatible, and keep the detailed description of quirky chip variations
in the driver, where it can be easily fixed, refactored, and extended.
Older device trees will continue to work (including a workaround for
old ls1021a device trees that are missing compatible and reg in the
clockgen node, which even the old binding required). The pll/mux
details in old device trees will be ignored, but "clocks" properties
pointing at the old nodes will still work, and be directed at the
corresponding new clock.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
This is a collection of a few late fixes and other misc. stuff that
had dependencies on things being merged from other trees.
The bulk of the changes are for samsung/exynos SoCs for some changes
that needed a few minor reworks so ended up a bit late. The others
are mainly for qcom SoCs: a couple fixes and some DTS updates.
There's one conflict with drivers/cpufreq/exynos-cpufreq.c because
it's now been completely removed, but there were some fixes that hit
mainline in the meantime.
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Merge tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull late ARM SoC updates from Kevin Hilman:
"This is a collection of a few late fixes and other misc stuff that had
dependencies on things being merged from other trees.
The bulk of the changes are for samsung/exynos SoCs for some changes
that needed a few minor reworks so ended up a bit late. The others
are mainly for qcom SoCs: a couple fixes and some DTS updates"
* tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (37 commits)
ARM: multi_v7_defconfig: Enable PBIAS regulator
soc: qcom: smd: Correct fBLOCKREADINTR handling
soc: qcom: smd: Use correct remote processor ID
soc: qcom: smem: Fix errant private access
ARM: dts: qcom: msm8974-sony-xperia-honami: Use stdout-path
ARM: dts: qcom: msm8960-cdp: Use stdout-path
ARM: dts: qcom: msm8660-surf: Use stdout-path
ARM: dts: qcom: ipq8064-ap148: Use stdout-path
ARM: dts: qcom: apq8084-mtp: Use stdout-path
ARM: dts: qcom: apq8084-ifc6540: Use stdout-path
ARM: dts: qcom: apq8074-dragonboard: Use stdout-path
ARM: dts: qcom: apq8064-ifc6410: Use stdout-path
ARM: dts: qcom: apq8064-cm-qs600: Use stdout-path
ARM: dts: qcom: Label serial nodes for aliasing and stdout-path
reset: ath79: Fix missing spin_lock_init
reset: Add (devm_)reset_control_get stub functions
ARM: EXYNOS: switch to using generic cpufreq driver for exynos4x12
cpufreq: exynos: Remove unselectable rule for arm-exynos-cpufreq.o
ARM: dts: add iommu property to JPEG device for exynos4
ARM: dts: enable SPI1 for exynos4412-odroidu3
...
Pull i2c updates from Wolfram Sang:
"Features:
- new drivers: Renesas EMEV2, register based MUX, NXP LPC2xxx
- core: scans DT and assigns wakeup interrupts. no driver changes needed.
- core: some refcouting issues fixed and better API for that
- core: new helper function for best effort block read emulation
- slave framework: proper DT bindings and userspace instantiation
- some bigger work for xiic, pxa, omap drivers
.. and quite a number of smaller driver fixes, cleanups, improvements"
* 'i2c/for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (65 commits)
i2c: mux: reg Change ioread endianness for readback
i2c: mux: reg: fix compilation warnings
i2c: mux: reg: simplify register size checking
i2c: muxes: fix leaked i2c adapter device node references
i2c: allow specifying separate wakeup interrupt in device tree
of/irq: export of_get_irq_byname()
i2c: xgene-slimpro: dma_mapping_error() doesn't return an error code
i2c: Replace I2C_CROS_EC_TUNNEL dependency
eeprom: at24: use i2c_smbus_read_i2c_block_data_or_emulated
i2c: core: Add support for best effort block read emulation
i2c: lpc2k: add driver
i2c: mux: Add register-based mux i2c-mux-reg
i2c: dt: describe generic bindings
i2c: slave: print warning if slave flag not set
i2c: support 10 bit and slave addresses in sysfs 'new_device'
i2c: take address space into account when checking for used addresses
i2c: apply DT flags when probing
i2c: make address check indpendent from client struct
i2c: rename address check functions
i2c: apply address offset for slaves, too
...
cycle
Core changes:
- It is possible configure groups in debugfs.
- Consolidation of chained IRQ handler install/remove replacing
all call sites where irq_set_handler_data() and
irq_set_chained_handler() were done in succession with a
combined call to irq_set_chained_handler_and_data(). This
series was created by Thomas Gleixner after the problem was
observed by Russell King.
- Tglx also made another series of patches switching
__irq_set_handler_locked() for irq_set_handler_locked() which
is way cleaner.
- Tglx also wrote a good bunch of patches to make use of
irq_desc_get_xxx() accessors and avoid looking up irq_descs
from IRQ numbers. The goal is to get rid of the irq number
from the handlers in the IRQ flow which is nice.
Driver feature enhancements:
- Power management support for the SiRF SoC Atlas 7.
- Power down support for the Qualcomm driver.
- Intel Cherryview and Baytrail: switch drivers to use raw
spinlocks in IRQ handlers to play nice with the realtime
patch set.
- Rework and new modes handling for Qualcomm SPMI-MPP.
- Pinconf power source config for SH PFC.
New drivers and subdrivers:
- A new driver for Conexant Digicolor CX92755.
- A new driver for UniPhier PH1-LD4, PH1-Pro4, PH1-sLD8,
PH1-Pro5, ProXtream2 and PH1-LD6b SoC pin control support.
- Reverse-egineered the S/PDIF settings for the Allwinner
sun4i driver.
- Support for Qualcomm Technologies QDF2xxx ARM64 SoCs
- A new Freescale i.mx6ul subdriver.
Cleanup:
- Remove platform data support in a number of SH PFC
subdrivers.
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Merge tag 'pinctrl-v4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control updates from Linus Walleij:
"This is the bulk of pin control changes for the v4.3 development
cycle.
Like with GPIO it's a lot of stuff. If my subsystems are any sign of
the overall tempo of the kernel v4.3 will be a gigantic diff.
[ It looks like 4.3 is calmer than 4.2 in most other subsystems, but
we'll see - Linus ]
Core changes:
- It is possible configure groups in debugfs.
- Consolidation of chained IRQ handler install/remove replacing all
call sites where irq_set_handler_data() and
irq_set_chained_handler() were done in succession with a combined
call to irq_set_chained_handler_and_data(). This series was
created by Thomas Gleixner after the problem was observed by
Russell King.
- Tglx also made another series of patches switching
__irq_set_handler_locked() for irq_set_handler_locked() which is
way cleaner.
- Tglx also wrote a good bunch of patches to make use of
irq_desc_get_xxx() accessors and avoid looking up irq_descs from
IRQ numbers. The goal is to get rid of the irq number from the
handlers in the IRQ flow which is nice.
Driver feature enhancements:
- Power management support for the SiRF SoC Atlas 7.
- Power down support for the Qualcomm driver.
- Intel Cherryview and Baytrail: switch drivers to use raw spinlocks
in IRQ handlers to play nice with the realtime patch set.
- Rework and new modes handling for Qualcomm SPMI-MPP.
- Pinconf power source config for SH PFC.
New drivers and subdrivers:
- A new driver for Conexant Digicolor CX92755.
- A new driver for UniPhier PH1-LD4, PH1-Pro4, PH1-sLD8, PH1-Pro5,
ProXtream2 and PH1-LD6b SoC pin control support.
- Reverse-egineered the S/PDIF settings for the Allwinner sun4i
driver.
- Support for Qualcomm Technologies QDF2xxx ARM64 SoCs
- A new Freescale i.mx6ul subdriver.
Cleanup:
- Remove platform data support in a number of SH PFC subdrivers"
* tag 'pinctrl-v4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (95 commits)
pinctrl: at91: fix null pointer dereference
pinctrl: mediatek: Implement wake handler and suspend resume
pinctrl: mediatek: Fix multiple registration issue.
pinctrl: sh-pfc: r8a7794: add USB pin groups
pinctrl: at91: Use generic irq_{request,release}_resources()
pinctrl: cherryview: Use raw_spinlock for locking
pinctrl: baytrail: Use raw_spinlock for locking
pinctrl: imx6ul: Remove .owner field
pinctrl: zynq: Fix typos in smc0_nand_grp and smc0_nor_grp
pinctrl: sh-pfc: Implement pinconf power-source param for voltage switching
clk: rockchip: add pclk_pd_pmu to the list of rk3288 critical clocks
pinctrl: sun4i: add spdif to pin description.
pinctrl: atlas7: clear ugly branch statements for pull and drivestrength
pinctrl: baytrail: Serialize all register access
pinctrl: baytrail: Drop FSF mailing address
pinctrl: rockchip: only enable gpio clock when it setting
pinctrl/mediatek: fix spelling mistake in dev_err error message
pinctrl: cherryview: Serialize all register access
pinctrl: UniPhier: PH1-Pro5: add I2C ch6 pin-mux setting
pinctrl: nomadik: reflect current input value
...
This is the usual large batch of DT updates. Lots and lots of smaller
changes, some of the larger ones to point out are:
- Rockchip veyron (Chromebook) support, as well as several other new boards
- DRM support on Atmel AT91SAM9N12EK
- USB additions on some Allwinner platforms
- Mediatek MT6580 support
- Freescale i.MX6UL support
- Cleanups for Renesas shmobile platforms
- Lots of added devices on LPC18xx
- Lots of added devices and boards on UniPhier
There's also some dependent code added here, in particular some branches
that are primarily merged through the clock tree.
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Merge tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM DT updates from Olof Johansson:
"Ladies and gentlemen, we proudly announce to you the latest branch of
ARM device tree contents for the mainline kernel. Come and see, come
and see!
No less than twentythree thousand lines of additions! Just imagine the
joy you will have of using your mainline kernel on newly supported
hardware such as Rockchip Chromebooks, Freescale i.MX6UL boards or
UniPhier hardware!
For those of you feeling less adventurous, added hardware support on
platforms such as TI DM814x and Gumstix Overo platforms might be more
of your liking.
We've got something for everyone here!
Ahem. Cough. So, anyway...
This is the usual large batch of DT updates. Lots and lots of smaller
changes, some of the larger ones to point out are:
- Rockchip veyron (Chromebook) support, as well as several other new boards
- DRM support on Atmel AT91SAM9N12EK
- USB additions on some Allwinner platforms
- Mediatek MT6580 support
- Freescale i.MX6UL support
- cleanups for Renesas shmobile platforms
- lots of added devices on LPC18xx
- lots of added devices and boards on UniPhier
There's also some dependent code added here, in particular some
branches that are primarily merged through the clock tree"
* tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (389 commits)
ARM: tegra: Add gpio-ranges property
ARM: tegra: Fix AHB base address on Tegra20, Tegra30 and Tegra114
ARM: tegra: Add Tegra124 PMU support
ARM: tegra: jetson-tk1: Add GK20A GPU DT node
ARM: tegra: venice2: Add GK20A GPU DT node
ARM: tegra: Add IOMMU node to GK20A
ARM: tegra: Add CPU regulator to the Jetson TK1 device tree
ARM: tegra: Add entries for cpufreq on Tegra124
ARM: tegra: Enable the DFLL on the Jetson TK1
ARM: tegra: Add the DFLL to Tegra124 device tree
ARM: dts: zynq: Add devicetree entry for Xilinx Zynq reset controller.
ARM: dts: UniPhier: fix PPI interrupt CPU mask of timer nodes
ARM: dts: rockchip: correct regulator power states for suspend
ARM: dts: rockchip: correct regulator PM properties
ARM: dts: vexpress: Use assigned-clock-parents for sp810
pinctrl: tegra: Only set the gpio range if needed
arm: boot: dts: am4372: add ARM timers and SCU nodes
ARM: dts: AM4372: Add the am4372-rtc compatible string
ARM: shmobile: r8a7794 dtsi: Add CPG/MSTP Clock Domain
ARM: shmobile: r8a7793 dtsi: Add CPG/MSTP Clock Domain
...
Some releases this branch is nearly empty, others we have more stuff. It
tends to gather drivers that need SoC modification or dependencies such
that they have to (also) go in through our tree.
For this release, we have merged in part of the reset controller tree
(with handshake that the parts we have merged in will remain stable),
as well as dependencies on a few clock branches.
In general, new items here are:
- Qualcomm driver for SMM/SMD, which is how they communicate with the
coprocessors on (some) of their platforms
- Memory controller work for ARM's PL172 memory controller
- Reset drivers for various platforms
- PMU power domain support for Marvell platforms
- Tegra support for T132/T210 SoCs: PMC, fuse, memory controller per-SoC support
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver updates from Olof Johansson:
"Some releases this branch is nearly empty, others we have more stuff.
It tends to gather drivers that need SoC modification or dependencies
such that they have to (also) go in through our tree.
For this release, we have merged in part of the reset controller tree
(with handshake that the parts we have merged in will remain stable),
as well as dependencies on a few clock branches.
In general, new items here are:
- Qualcomm driver for SMM/SMD, which is how they communicate with the
coprocessors on (some) of their platforms
- memory controller work for ARM's PL172 memory controller
- reset drivers for various platforms
- PMU power domain support for Marvell platforms
- Tegra support for T132/T210 SoCs: PMC, fuse, memory controller
per-SoC support"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (49 commits)
ARM: tegra: cpuidle: implement cpuidle_state.enter_freeze()
ARM: tegra: Disable cpuidle if PSCI is available
soc/tegra: pmc: Use existing pclk reference
soc/tegra: pmc: Remove unnecessary return statement
soc: tegra: Remove redundant $(CONFIG_ARCH_TEGRA) in Makefile
memory: tegra: Add Tegra210 support
memory: tegra: Add support for a variable-size client ID bitfield
clk: shmobile: rz: Add CPG/MSTP Clock Domain support
clk: shmobile: rcar-gen2: Add CPG/MSTP Clock Domain support
clk: shmobile: r8a7779: Add CPG/MSTP Clock Domain support
clk: shmobile: r8a7778: Add CPG/MSTP Clock Domain support
clk: shmobile: Add CPG/MSTP Clock Domain support
ARM: dove: create a proper PMU driver for power domains, PMU IRQs and resets
reset: reset-zynq: Adding support for Xilinx Zynq reset controller.
docs: dts: Added documentation for Xilinx Zynq Reset Controller bindings.
MIPS: ath79: Add the reset controller to the AR9132 dtsi
reset: Add a driver for the reset controller on the AR71XX/AR9XXX
devicetree: Add bindings for the ATH79 reset controller
reset: socfpga: Update reset-socfpga to read the altr,modrst-offset property
doc: dt: add documentation for lpc1850-rgu reset driver
...
New or improved SoC support:
- Addition of support for Atmel's SAMA5D2 SoC
- Addition of Freescale i.MX6UL
- Improved support of TI's DM814x platform
- Misc fixes and improvements for RockChip platforms
- Marvell MVEBU suspend/resume support
A few driver changes that ideally would belong in the drivers branch are
also here (acked by appropriate maintainers):
- Power key input driver for Freescale platforms (svns)
- RTC driver updates for Freescale platforms (svns/mxc)
- Clk fixes for TI DM814/816X
+ a bunch of other changes for various platforms
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Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC platform updates from Olof Johansson:
"New or improved SoC support:
- add support for Atmel's SAMA5D2 SoC
- add support for Freescale i.MX6UL
- improved support for TI's DM814x platform
- misc fixes and improvements for RockChip platforms
- Marvell MVEBU suspend/resume support
A few driver changes that ideally would belong in the drivers branch
are also here (acked by appropriate maintainers):
- power key input driver for Freescale platforms (svns)
- RTC driver updates for Freescale platforms (svns/mxc)
- clk fixes for TI DM814/816X
+ a bunch of other changes for various platforms"
* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (83 commits)
ARM: rockchip: pm: Fix PTR_ERR() argument
ARM: imx: mach-imx6ul: Fix allmodconfig build
clk: ti: fix for definition movement
ARM: uniphier: drop v7_invalidate_l1 call at secondary entry
memory: kill off set_irq_flags usage
rtc: snvs: select option REGMAP_MMIO
ARM: brcmstb: select ARCH_DMA_ADDR_T_64BIT for LPAE
ARM: BCM: Enable ARM erratum 798181 for BRCMSTB
ARM: OMAP2+: Fix power domain operations regression caused by 81xx
ARM: rockchip: enable PMU_GPIOINT_WAKEUP_EN when entering shallow suspend
ARM: rockchip: set correct stabilization thresholds in suspend
ARM: rockchip: rename osc_switch_to_32k variable
ARM: imx6ul: add fec MAC refrence clock and phy fixup init
ARM: imx6ul: add fec bits to GPR syscon definition
rtc: mxc: add support of device tree
dt-binding: document the binding for mxc rtc
rtc: mxc: use a second rtc clock
ARM: davinci: cp_intc: use IRQCHIP_SKIP_SET_WAKE instead of irq_set_wake callback
soc: mediatek: Fix SCPSYS compilation
ARM: at91/soc: add basic support for new sama5d2 SoC
...
and the addition of new clock drivers. Stephen Boyd has also done a lot
of subsystem-wide driver clean-ups (thanks!). There are also fixes to
the framework core and changes to better split clock provider drivers
from clock consumer drivers.
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Merge tag 'clk-for-linus-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk updates from Michael Turquette:
"The clk framework changes for 4.3 are mostly updates to existing
drivers and the addition of new clock drivers. Stephen Boyd has also
done a lot of subsystem-wide driver clean-ups (thanks!). There are
also fixes to the framework core and changes to better split clock
provider drivers from clock consumer drivers"
* tag 'clk-for-linus-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (227 commits)
clk: s5pv210: add missing call to samsung_clk_of_add_provider()
clk: pistachio: correct critical clock list
clk: pistachio: Fix PLL rate calculation in integer mode
clk: pistachio: Fix override of clk-pll settings from boot loader
clk: pistachio: Fix 32bit integer overflows
clk: tegra: Fix some static checker problems
clk: qcom: Fix MSM8916 prng clock enable bit
clk: Add missing header for 'bool' definition to clk-conf.h
drivers/clk: appropriate __init annotation for const data
clk: rockchip: register pll mux before pll itself
clk: add bindings for the Ux500 clocks
clk/ARM: move Ux500 PRCC bases to the device tree
clk: remove duplicated code with __clk_set_parent_after
clk: Convert __clk_get_name(hw->clk) to clk_hw_get_name(hw)
clk: Constify clk_hw argument to provider APIs
clk: Hi6220: add stub clock driver
dt-bindings: clk: Hi6220: Document stub clock driver
dt-bindings: arm: Hi6220: add doc for SRAM controller
clk: atlas7: fix pll missed divide NR in fraction mode
clk: atlas7: fix bit field and its root clk for coresight_tpiu
...
Commit d5e136a21b ("clk: samsung: Register
clk provider only after registering its all clocks", merged to v3.17-rc1)
modified a way that driver registers registers to core framework. This
change has not been applied to s5pv210 clocks driver, which has been
merged in parallel to that commit. This patch adds a missing call to
samsung_clk_of_add_provider(), so the driver is operational again.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
CC: stable@vger.kernel.org # v3.17+
Acked-by: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Current critical clock list for pistachio enables
only mips and sys clocks by default but there are
also other clocks that are not claimed by anyone and
needs to be enabled by default.
This patch updates the critical clocks that need
to be enabled by default.
Add a separate struct to distinguish the critical clocks
as listed:
1.) core clocks:
a.) mips clock
2.) peripheral system clocks:
a.) sys clock
b.) sys_bus clock
c.) DDR clock
d.) ROM clock
Fixes: b35d7c33419c("CLK: Pistachio: Register core clocks")
Cc: <stable@vger.kernel.org> # 4.1
Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
Signed-off-by: Damien.Horsley <Damien.Horsley@imgtec.com>
Signed-off-by: Govindraj Raja <govindraj.raja@imgtec.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
.recalc_rate callback for the fractional PLL doesn't take operating
mode into account when calculating PLL rate. This results in
the incorrect PLL rates when PLL is operating in integer mode.
Operating mode of fractional PLL is based on the value of the
fractional divider. Currently it assumes that the PLL will always
be configured in fractional mode which may not be
the case. This may result in the wrong output frequency.
Also vco was calculated based on the current operating mode which
makes no sense because .set_rate is setting operating mode. Instead,
vco should be calculated using PLL settings that are about to be set.
Fixes: 43049b0c83f17("CLK: Pistachio: Add PLL driver")
Cc: <stable@vger.kernel.org> # 4.1
Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Zdenko Pulitika <zdenko.pulitika@imgtec.com>
Signed-off-by: Govindraj Raja <govindraj.raja@imgtec.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
PLL enable callbacks are overriding PLL mode (int/frac) and
Noise reduction (on/off) settings set by the boot loader which
results in the incorrect clock rate.
PLL mode and noise reduction are defined by the DSMPD and DACPD bits
of the PLL control register. PLL .enable() callbacks enable PLL
by deasserting all power-down bits of the PLL control register,
including DSMPD and DACPD bits, which is not necessary since
these bits don't actually enable/disable PLL.
This commit fixes the problem by removing DSMPD and DACPD bits
from the "PLL enable" mask.
Fixes: 43049b0c83f17("CLK: Pistachio: Add PLL driver")
Cc: <stable@vger.kernel.org> # 4.1
Reviewed-by: Andrew Bresitcker <abrestic@chromium.org>
Signed-off-by: Zdenko Pulitika <zdenko.pulitika@imgtec.com>
Signed-off-by: Govindraj Raja <govindraj.raja@imgtec.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This commit fixes 32bit integer overflows throughout the pll driver
(i.e. wherever the result of integer multiplication may exceed the
range of u32).
One of the functions affected by this problem is .recalc_rate. It
returns incorrect rate for some pll settings (not for all though)
which in turn results in the incorrect rate setup of pll's child
clocks.
Fixes: 43049b0c83f17("CLK: Pistachio: Add PLL driver")
Cc: <stable@vger.kernel.org> # 4.1
Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Zdenko Pulitika <zdenko.pulitika@imgtec.com>
Signed-off-by: Govindraj Raja <govindraj.raja@imgtec.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The latest Tegra clk pull had some problems. Fix them.
drivers/clk/tegra/clk-tegra124.c:1450:6: warning: symbol 'tegra124_clock_assert_dfll_dvco_reset' was not declared. Should it be static?
drivers/clk/tegra/clk-tegra124.c:1466:6: warning: symbol 'tegra124_clock_deassert_dfll_dvco_reset' was not declared. Should it be static?
drivers/clk/tegra/clk-tegra124.c:1476:5: warning: symbol 'tegra124_reset_assert' was not declared. Should it be static?
drivers/clk/tegra/clk-tegra124.c:1486:5: warning: symbol 'tegra124_reset_deassert' was not declared. Should it be static?
drivers/clk/tegra/clk-dfll.c:590 dfll_load_i2c_lut() warn: inconsistent indenting
drivers/clk/tegra/clk-dfll.c:1448 dfll_build_i2c_lut() warn: unsigned 'td->i2c_lut[0]' is never less than zero.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This contains the DFLL driver needed to implement CPU frequency scaling
on Tegra.
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Merge tag 'tegra-for-4.3-clk' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into clk-next
clk: tegra: Changes for v4.3-rc1
This contains the DFLL driver needed to implement CPU frequency scaling
on Tegra.
Fix the enable bit of the pseudorandom number generator clock.
Reported-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Fixes: 3966fab8b6 "clk: qcom: Add MSM8916 Global Clock Controller support"
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Init data marked const should be annotated with __initconst for
correctness and not __initdata. This also fixes LTO builds that
otherwise fail with section mismatch errors.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
[sboyd@codeaurora.org: Dropped hunks that moved const char *
arrays to const char * const]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The structure is xin24m -> pll -> pll-mux (xin24m,pll,xin32k). The pll
does have an init callback to make sure the boot-selected frequency is
using the expected pll settings and resets the same frequency using
the values provided in the driver if necessary.
The setting itself also involves remuxing the pll-mux temporarily to
the xin24m source to let the new pll rate settle. Until now this worked
flawlessly, even when it had the flaw of accessing the mux settings
before the mux actually got registered.
With the recent clock-core conversions this flaw became apparent in
null pointer dereference in
[<c03fc400>] (clk_hw_get_num_parents) from [<c0400df0>] (clk_mux_get_parent+0x14/0xc8)
[<c0400ddc>] (clk_mux_get_parent) from [<c040246c>] (rockchip_rk3066_pll_set_rate+0xd8/0x320)
So to fix that, simply register the pll-mux before the pll, so that
it will be fully initialized when the pll clock executes its init-
callback and possibly touches the pll-mux clock.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
The base addresses for the Ux500 PRCC controllers are hardcoded,
let's move them to the clock node in the device tree and delete
the constants.
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Michael Turquette <mturquette@baylibre.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
__clk_set_parent_after() actually used the second argument then we
could put this duplicate logic in there and call it with a different
order of arguments in the success vs. error paths in this function.
Cc: Mike Turquette <mturquette@linaro.org>
Suggested-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Use the provider based method to get a clock's name so that we
can get rid of the clk member in struct clk_hw one day. Mostly
converted with the following coccinelle script.
@@
struct clk_hw *E;
@@
-__clk_get_name(E->clk)
+clk_hw_get_name(E)
Acked-by: Heiko Stuebner <heiko@sntech.de>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Cc: Tomasz Figa <tomasz.figa@gmail.com>
Cc: Peter De Schrijver <pdeschrijver@nvidia.com>
Cc: Prashant Gaikwad <pgaikwad@nvidia.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Thierry Reding <treding@nvidia.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Tero Kristo <t-kristo@ti.com>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Andrew Bresticker <abrestic@chromium.org>
Cc: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Kevin Cernekee <cernekee@chromium.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
Cc: linux-tegra@vger.kernel.org
Cc: linux-omap@vger.kernel.org
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
On Hi6220, there have some clocks which can use mailbox channel to send
messages to power controller to change frequency; this includes CPU, GPU
and DDR clocks.
For dynamic frequency scaling, firstly need write the frequency value to
SRAM region, and then send message to mailbox to trigger power controller
to handle this requirement. This driver will use syscon APIs to pass SRAM
memory region and use common mailbox APIs for channels accessing.
This init driver will support cpu frequency change firstly.
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
PLL VCO frequency is given by Fvco = Fref * 2 * NF / NR
in integer-N mode, or by Fvco = Fref * SSN / NR in Spread
Spectrum (fractional-N) mode. Thus fix the missing part
of NR
Signed-off-by: Guo Zeng <guo.zeng@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
bit4 thcpum_cpudiv4_clken r/w
thcpum_cpudiv4_clk clock enable (default: 1)
Root clock CPU_CLK must be enabled for this clock to be enabled
bit3 coresight_tpiu_clken r/w
coresight_tpiu_clk clock enable (default: 0)
Root clock TPIU_CLK must be enabled for this clock to be enabled
Signed-off-by: Guo Zeng <guo.zeng@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
I cannot believe that I spend quite a lot time in finding this bug.
It seems a pitfall people tend to fall in.
In "int64 = int32 * int32", conversion from 32-bits to 64-bits comes
after the multiplication. So this statement may not work as expected.
Signed-off-by: Yibo Cai <yibo.cai@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
this patch makes mux clks can be referenced by device drivers.
Signed-off-by: Guo Zeng <guo.zeng@csr.com>
Signed-off-by: Barry Song <Barry.Song@csr.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The debug base clock can be bypassed from the main PLL to the OSC1 clock.
The bypass register is the staysoc1(0x10) register that is in the clock
manager.
This patch adds the option to get the correct parent for the debug base
clock.
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This code is unused and not coming back. Let's kill it off.
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Remove these APIs now that we've converted all users to the
replacement struct clk_hw based versions.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This driver uses __clk_get_name() when it's dealing with struct
clk_hw pointers. Use the simpler form so that we can get rid of
the clk member in struct clk_hw one day.
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
We're removing struct clk from the clk provider API. This code is
calling the consumer APIs to change the parent to a 1 MHz fixed
rate clock for each of the clocks that the driver provides. Move
to using the assigned-clock-parents DT property for this instead.
Because this is an ABI break, detect if the property is missing
and fall back to setting the parent explicitly before the clocks
are registered.
Acked-by: Pawel Moll <pawel.moll@arm.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
We're removing struct clk from the clk provider API, so switch
this code to using the clk_hw based provider APIs.
Acked-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
We're removing struct clk from the clk provider API, so switch
this code to using the clk_hw based provider APIs.
Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
We're removing struct clk from the clk provider API, so switch
this code to using the clk_hw based provider APIs.
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: "Emilio López" <emilio@elopez.com.ar>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
We're removing struct clk from the clk provider API, so switch
this code to using the clk_hw based provider APIs.
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
We're removing struct clk from the clk provider API, so switch
this code to using the clk_hw based provider APIs.
Cc: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
We're removing struct clk from the clk provider API, so switch
this code to using the clk_hw based provider APIs.
Cc: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
We're removing struct clk from the clk provider API, so switch
this code to using the clk_hw based provider APIs.
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
We're removing struct clk from the clk provider API, so switch
this code to using the clk_hw based provider APIs.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
We're removing struct clk from the clk provider API, so switch
this code to using the clk_hw based provider APIs.
Cc: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
We're removing struct clk from the clk provider API, so switch
this code to using the clk_hw based provider APIs. This also
removes a clk_get() in this driver that can just as easily use
of_clk_get_parent_name() instead.
Cc: Gregory CLEMENT <gregory.clement@free-electrons.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
We're removing struct clk from the clk provider API, so switch
this code to using the clk_hw based provider APIs.
Cc: Chao Xie <chao.xie@marvell.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
We're removing struct clk from the clk provider API, so switch
this code to using the clk_hw based provider APIs.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
We're removing struct clk from the clk provider API, so switch
this code to using the clk_hw based provider APIs.
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
