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Second SoC batch for 3.18:

Browse Source 
- introduction of the new SAMA5D4 SoC and associated Evaluation Kit
 - low level soc detection and early printk code
 - taking advantage of this, documentation of all AT91 SoC DT strings
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Merge tag 'at91-soc2' of git://github.com/at91linux/linux-at91 into next/soc

Pull "Second SoC batch for 3.18" from Nicolas Ferre:

- introduction of the new SAMA5D4 SoC and associated Evaluation Kit
- low level soc detection and early printk code
- taking advantage of this, documentation of all AT91 SoC DT strings

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

* tag 'at91-soc2' of git://github.com/at91linux/linux-at91:
  ARM: at91: document Atmel SMART compatibles
  ARM: at91: add sama5d4 support to sama5_defconfig
  ARM: at91: dt: add device tree file for SAMA5D4ek board
  ARM: at91: dt: add device tree file for SAMA5D4 SoC
  ARM: at91: SAMA5D4 SoC detection code and low level routines
  ARM: at91: introduce basic SAMA5D4 support
  clk: at91: add a driver for the h32mx clock
This commit is contained in:
Arnd Bergmann 2014-09-26 00:15:09 +02:00
commit 6d50424a39
24 changed files with 1987 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
Documentation/devicetree/bindings/arm/atmel-at91.txt
View File

@ -1,6 +1,43 @@
Atmel AT91 device tree bindings.
================================
Boards with a SoC of the Atmel AT91 or SMART family shall have the following
properties:
Required root node properties:
compatible: must be one of:
* "atmel,at91rm9200"
* "atmel,at91sam9" for SoCs using an ARM926EJ-S core, shall be extended with
the specific SoC family or compatible:
o "atmel,at91sam9260"
o "atmel,at91sam9261"
o "atmel,at91sam9263"
o "atmel,at91sam9x5" for the 5 series, shall be extended with the specific
SoC compatible:
- "atmel,at91sam9g15"
- "atmel,at91sam9g25"
- "atmel,at91sam9g35"
- "atmel,at91sam9x25"
- "atmel,at91sam9x35"
o "atmel,at91sam9g20"
o "atmel,at91sam9g45"
o "atmel,at91sam9n12"
o "atmel,at91sam9rl"
* "atmel,sama5" for SoCs using a Cortex-A5, shall be extended with the specific
SoC family:
o "atmel,sama5d3" shall be extended with the specific SoC compatible:
- "atmel,sama5d31"
- "atmel,sama5d33"
- "atmel,sama5d34"
- "atmel,sama5d35"
- "atmel,sama5d36"
o "atmel,sama5d4" shall be extended with the specific SoC compatible:
- "atmel,sama5d41"
- "atmel,sama5d42"
- "atmel,sama5d43"
- "atmel,sama5d44"
PIT Timer required properties:
- compatible: Should be "atmel,at91sam9260-pit"
- reg: Should contain registers location and length

14
Documentation/devicetree/bindings/clock/at91-clock.txt
View File

@ -74,6 +74,9 @@ Required properties:
"atmel,at91sam9x5-clk-utmi":
at91 utmi clock
"atmel,sama5d4-clk-h32mx":
at91 h32mx clock
Required properties for SCKC node:
- reg : defines the IO memory reserved for the SCKC.
- #size-cells : shall be 0 (reg is used to encode clk id).
@ -447,3 +450,14 @@ For example:
#clock-cells = <0>;
clocks = <&main>;
};
Required properties for 32 bits bus Matrix clock (h32mx clock):
- #clock-cells : from common clock binding; shall be set to 0.
- clocks : shall be the master clock source phandle.
For example:
h32ck: h32mxck {
#clock-cells = <0>;
compatible = "atmel,sama5d4-clk-h32mx";
clocks = <&mck>;
};

4
arch/arm/Kconfig.debug
View File

@ -101,6 +101,10 @@ choice
bool "Kernel low-level debugging on 9263 and 9g45"
depends on HAVE_AT91_DBGU1
config AT91_DEBUG_LL_DBGU2
bool "Kernel low-level debugging on sama5d4"
depends on HAVE_AT91_DBGU2
config DEBUG_BCM2835
bool "Kernel low-level debugging on BCM2835 PL011 UART"
depends on ARCH_BCM2835

2
arch/arm/boot/dts/Makefile
View File

@ -48,6 +48,8 @@ dtb-$(CONFIG_ARCH_AT91) += sama5d33ek.dtb
dtb-$(CONFIG_ARCH_AT91) += sama5d34ek.dtb
dtb-$(CONFIG_ARCH_AT91) += sama5d35ek.dtb
dtb-$(CONFIG_ARCH_AT91) += sama5d36ek.dtb
# sama5d4
dtb-$(CONFIG_ARCH_AT91) += at91-sama5d4ek.dtb
dtb-$(CONFIG_ARCH_ATLAS6) += atlas6-evb.dtb
dtb-$(CONFIG_ARCH_AXXIA) += axm5516-amarillo.dtb

260
arch/arm/boot/dts/at91-sama5d4ek.dts Normal file
View File

@ -0,0 +1,260 @@
/*
* at91-sama5d4ek.dts - Device Tree file for SAMA5D4 Evaluation Kit
*
* Copyright (C) 2014 Atmel,
* 2014 Nicolas Ferre <nicolas.ferre@atmel.com>
*
* This file is dual-licensed: you can use it either under the terms
* of the GPL or the X11 license, at your option. Note that this dual
* licensing only applies to this file, and not this project as a
* whole.
*
* a) This library 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 library 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.
*
* Or, alternatively,
*
* b) Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
/dts-v1/;
#include "sama5d4.dtsi"
/ {
model = "Atmel SAMA5D4-EK";
compatible = "atmel,sama5d4ek", "atmel,sama5d4", "atmel,sama5";
chosen {
bootargs = "console=ttyS0,115200 ignore_loglevel earlyprintk";
};
memory {
reg = <0x20000000 0x20000000>;
};
clocks {
#address-cells = <1>;
#size-cells = <1>;
ranges;
main_clock: clock@0 {
compatible = "atmel,osc", "fixed-clock";
clock-frequency = <12000000>;
};
slow_xtal {
clock-frequency = <32768>;
};
main_xtal {
clock-frequency = <12000000>;
};
};
ahb {
apb {
lcd_bus@f0000000 {
status = "okay";
lcd@f0000000 {
status = "okay";
};
lcdovl1@f0000140 {
status = "okay";
};
lcdovl2@f0000240 {
status = "okay";
};
lcdheo1@f0000340 {
status = "okay";
};
};
adc0: adc@fc034000 {
/* The vref depends on JP22 of EK. If connect 1-2 then use 3.3V. connect 2-3 use 3.0V */
atmel,adc-vref = <3300>;
/*atmel,adc-ts-wires = <4>;*/ /* Set up ADC touch screen */
status = "okay"; /* Enable ADC IIO support */
};
mmc0: mmc@f8000000 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_mmc0_clk_cmd_dat0 &pinctrl_mmc0_dat1_3 &pinctrl_mmc0_cd>;
slot@1 {
reg = <1>;
bus-width = <4>;
cd-gpios = <&pioE 5 0>;
};
};
spi0: spi@f8010000 {
cs-gpios = <&pioC 3 0>, <0>, <0>, <0>;
status = "okay";
m25p80@0 {
compatible = "atmel,at25df321a";
spi-max-frequency = <50000000>;
reg = <0>;
};
};
i2c0: i2c@f8014000 {
status = "okay";
};
macb0: ethernet@f8020000 {
phy-mode = "rmii";
status = "okay";
};
mmc1: mmc@fc000000 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_mmc1_clk_cmd_dat0 &pinctrl_mmc1_dat1_3 &pinctrl_mmc1_cd>;
status = "okay";
slot@0 {
reg = <0>;
bus-width = <4>;
cd-gpios = <&pioE 6 0>;
};
};
usart2: serial@fc008000 {
status = "okay";
};
usart3: serial@fc00c000 {
status = "okay";
};
usart4: serial@fc010000 {
status = "okay";
};
watchdog@fc068640 {
status = "okay";
};
pinctrl@fc06a000 {
board {
pinctrl_mmc0_cd: mmc0_cd {
atmel,pins =
<AT91_PIOE 5 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP_DEGLITCH>;
};
pinctrl_mmc1_cd: mmc1_cd {
atmel,pins =
<AT91_PIOE 6 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP_DEGLITCH>;
};
pinctrl_usba_vbus: usba_vbus {
atmel,pins =
<AT91_PIOE 31 AT91_PERIPH_GPIO AT91_PINCTRL_DEGLITCH>;
};
pinctrl_key_gpio: key_gpio_0 {
atmel,pins =
<AT91_PIOE 13 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP_DEGLITCH>; /* PE13 gpio */
};
};
};
};
usb0: gadget@00400000 {
atmel,vbus-gpio = <&pioE 31 GPIO_ACTIVE_HIGH>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usba_vbus>;
status = "okay";
};
usb1: ohci@00500000 {
num-ports = <3>;
atmel,vbus-gpio = <0 /* &pioE 10 GPIO_ACTIVE_LOW */
&pioE 11 GPIO_ACTIVE_LOW
&pioE 12 GPIO_ACTIVE_LOW
>;
status = "okay";
};
usb2: ehci@00600000 {
status = "okay";
};
nand0: nand@80000000 {
nand-bus-width = <8>;
nand-ecc-mode = "hw";
nand-on-flash-bbt;
atmel,has-pmecc;
status = "okay";
at91bootstrap@0 {
label = "at91bootstrap";
reg = <0x0 0x40000>;
};
bootloader@40000 {
label = "bootloader";
reg = <0x40000 0x80000>;
};
bootloaderenv@c0000 {
label = "bootloader env";
reg = <0xc0000 0xc0000>;
};
dtb@180000 {
label = "device tree";
reg = <0x180000 0x80000>;
};
kernel@200000 {
label = "kernel";
reg = <0x200000 0x600000>;
};
rootfs@800000 {
label = "rootfs";
reg = <0x800000 0x0f800000>;
};
};
};
gpio_keys {
compatible = "gpio-keys";
#address-cells = <1>;
#size-cells = <0>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_key_gpio>;
pb_user1 {
label = "pb_user1";
gpios = <&pioE 13 GPIO_ACTIVE_HIGH>;
linux,code = <0x100>;
gpio-key,wakeup;
};
};
};

1240
arch/arm/boot/dts/sama5d4.dtsi Normal file
View File

File diff suppressed because it is too large Load Diff

1
arch/arm/configs/sama5_defconfig
View File

@ -19,6 +19,7 @@ CONFIG_MODULE_FORCE_UNLOAD=y
CONFIG_ARCH_AT91=y
CONFIG_SOC_SAM_V7=y
CONFIG_SOC_SAMA5D3=y
CONFIG_SOC_SAMA5D4=y
CONFIG_MACH_SAMA5_DT=y
CONFIG_AEABI=y
# CONFIG_OABI_COMPAT is not set

21
arch/arm/mach-at91/Kconfig
View File

@ -12,6 +12,9 @@ config HAVE_AT91_DBGU0
config HAVE_AT91_DBGU1
bool
config HAVE_AT91_DBGU2
bool
config AT91_USE_OLD_CLK
bool
@ -42,6 +45,9 @@ config AT91_SAM9_TIME
config HAVE_AT91_SMD
bool
config HAVE_AT91_H32MX
bool
config SOC_AT91SAM9
bool
select AT91_SAM9_TIME
@ -103,6 +109,21 @@ config SOC_SAMA5D3
help
Select this if you are using one of Atmel's SAMA5D3 family SoC.
This support covers SAMA5D31, SAMA5D33, SAMA5D34, SAMA5D35, SAMA5D36.
config SOC_SAMA5D4
bool "SAMA5D4 family"
select SOC_SAMA5
select HAVE_AT91_DBGU2
select CLKSRC_MMIO
select CACHE_L2X0
select CACHE_PL310
select HAVE_FB_ATMEL
select HAVE_AT91_UTMI
select HAVE_AT91_SMD
select HAVE_AT91_USB_CLK
select HAVE_AT91_H32MX
help
Select this if you are using one of Atmel's SAMA5D4 family SoC.
endif
if SOC_SAM_V4_V5

1
arch/arm/mach-at91/Makefile
View File

@ -23,6 +23,7 @@ obj-$(CONFIG_SOC_AT91SAM9N12) += at91sam9n12.o
obj-$(CONFIG_SOC_AT91SAM9X5) += at91sam9x5.o
obj-$(CONFIG_SOC_AT91SAM9RL) += at91sam9rl.o
obj-$(CONFIG_SOC_SAMA5D3) += sama5d3.o
obj-$(CONFIG_SOC_SAMA5D4) += sama5d4.o
obj-$(CONFIG_ARCH_AT91RM9200) += at91rm9200_devices.o
obj-$(CONFIG_ARCH_AT91SAM9260) += at91sam9260_devices.o

16
arch/arm/mach-at91/board-dt-sama5.c
View File

@ -73,7 +73,7 @@ static void __init sama5_dt_device_init(void)
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
}
static const char *sama5_dt_board_compat[] __initdata = {
static const char *sama5_dt_board_compat[] __initconst = {
"atmel,sama5",
NULL
};
@ -88,3 +88,17 @@ DT_MACHINE_START(sama5_dt, "Atmel SAMA5 (Device Tree)")
.init_machine = sama5_dt_device_init,
.dt_compat = sama5_dt_board_compat,
MACHINE_END
static const char *sama5_alt_dt_board_compat[] __initconst = {
"atmel,sama5d4",
NULL
};
DT_MACHINE_START(sama5_alt_dt, "Atmel SAMA5 (Device Tree)")
/* Maintainer: Atmel */
.map_io = at91_alt_map_io,
.init_early = at91_dt_initialize,
.init_machine = sama5_dt_device_init,
.dt_compat = sama5_alt_dt_board_compat,
.l2c_aux_mask = ~0UL,
MACHINE_END

1
arch/arm/mach-at91/generic.h
View File

@ -14,6 +14,7 @@
/* Map io */
extern void __init at91_map_io(void);
extern void __init at91_alt_map_io(void);
extern void __init at91_init_sram(int bank, unsigned long base,
unsigned int length);

22
arch/arm/mach-at91/include/mach/cpu.h
View File

@ -36,7 +36,7 @@
#define ARCH_ID_AT91M40807 0x14080745
#define ARCH_ID_AT91R40008 0x44000840
#define ARCH_ID_SAMA5D3 0x8A5C07C0
#define ARCH_ID_SAMA5 0x8A5C07C0
#define ARCH_EXID_AT91SAM9M11 0x00000001
#define ARCH_EXID_AT91SAM9M10 0x00000002
@ -49,12 +49,19 @@
#define ARCH_EXID_AT91SAM9G25 0x00000003
#define ARCH_EXID_AT91SAM9X25 0x00000004
#define ARCH_EXID_SAMA5D3 0x00004300
#define ARCH_EXID_SAMA5D31 0x00444300
#define ARCH_EXID_SAMA5D33 0x00414300
#define ARCH_EXID_SAMA5D34 0x00414301
#define ARCH_EXID_SAMA5D35 0x00584300
#define ARCH_EXID_SAMA5D36 0x00004301
#define ARCH_EXID_SAMA5D4 0x00000007
#define ARCH_EXID_SAMA5D41 0x00000001
#define ARCH_EXID_SAMA5D42 0x00000002
#define ARCH_EXID_SAMA5D43 0x00000003
#define ARCH_EXID_SAMA5D44 0x00000004
#define ARCH_FAMILY_AT91X92 0x09200000
#define ARCH_FAMILY_AT91SAM9 0x01900000
#define ARCH_FAMILY_AT91SAM9XE 0x02900000
@ -86,6 +93,9 @@ enum at91_soc_type {
/* SAMA5D3 */
AT91_SOC_SAMA5D3,
/* SAMA5D4 */
AT91_SOC_SAMA5D4,
/* Unknown type */
AT91_SOC_UNKNOWN,
};
@ -108,6 +118,10 @@ enum at91_soc_subtype {
AT91_SOC_SAMA5D31, AT91_SOC_SAMA5D33, AT91_SOC_SAMA5D34,
AT91_SOC_SAMA5D35, AT91_SOC_SAMA5D36,
/* SAMA5D4 */
AT91_SOC_SAMA5D41, AT91_SOC_SAMA5D42, AT91_SOC_SAMA5D43,
AT91_SOC_SAMA5D44,
/* No subtype for this SoC */
AT91_SOC_SUBTYPE_NONE,
@ -211,6 +225,12 @@ static inline int at91_soc_is_detected(void)
#define cpu_is_sama5d3() (0)
#endif
#ifdef CONFIG_SOC_SAMA5D4
#define cpu_is_sama5d4() (at91_soc_initdata.type == AT91_SOC_SAMA5D4)
#else
#define cpu_is_sama5d4() (0)
#endif
/*
* Since this is ARM, we will never run on any AVR32 CPU. But these
* definitions may reduce clutter in common drivers.

5
arch/arm/mach-at91/include/mach/debug-macro.S
View File

@ -16,8 +16,11 @@
#if defined(CONFIG_AT91_DEBUG_LL_DBGU0)
#define AT91_DBGU AT91_BASE_DBGU0
#else
#elif defined(CONFIG_AT91_DEBUG_LL_DBGU1)
#define AT91_DBGU AT91_BASE_DBGU1
#else
/* On sama5d4, use USART3 as low level serial console */
#define AT91_DBGU SAMA5D4_BASE_USART3
#endif
.macro addruart, rp, rv, tmp

19
arch/arm/mach-at91/include/mach/hardware.h
View File

@ -19,8 +19,10 @@
/* DBGU base */
/* rm9200, 9260/9g20, 9261/9g10, 9rl */
#define AT91_BASE_DBGU0 0xfffff200
/* 9263, 9g45 */
/* 9263, 9g45, sama5d3 */
#define AT91_BASE_DBGU1 0xffffee00
/* sama5d4 */
#define AT91_BASE_DBGU2 0xfc069000
#if defined(CONFIG_ARCH_AT91X40)
#include <mach/at91x40.h>
@ -34,6 +36,7 @@
#include <mach/at91sam9x5.h>
#include <mach/at91sam9n12.h>
#include <mach/sama5d3.h>
#include <mach/sama5d4.h>
/*
* On all at91 except rm9200 and x40 have the System Controller starts
@ -47,6 +50,11 @@
* and map the same memory space
*/
#define AT91_BASE_SYS 0xffffc000
/*
* On sama5d4 there is no system controller, we map some needed peripherals
*/
#define AT91_ALT_BASE_SYS 0xfc069000
#endif
/*
@ -69,6 +77,13 @@
*/
#define AT91_IO_PHYS_BASE 0xFFF78000
#define AT91_IO_VIRT_BASE IOMEM(0xFF000000 - AT91_IO_SIZE)
/*
* On sama5d4, remap the peripherals from address 0xFC069000 .. 0xFC06F000
* to 0xFB069000 .. 0xFB06F000. (24Kb)
*/
#define AT91_ALT_IO_PHYS_BASE AT91_ALT_BASE_SYS
#define AT91_ALT_IO_VIRT_BASE IOMEM(0xFB069000)
#else
/*
* Identity mapping for the non MMU case.
@ -81,11 +96,13 @@
/* Convert a physical IO address to virtual IO address */
#define AT91_IO_P2V(x) ((x) - AT91_IO_PHYS_BASE + AT91_IO_VIRT_BASE)
#define AT91_ALT_IO_P2V(x) ((x) - AT91_ALT_IO_PHYS_BASE + AT91_ALT_IO_VIRT_BASE)
/*
* Virtual to Physical Address mapping for IO devices.
*/
#define AT91_VA_BASE_SYS AT91_IO_P2V(AT91_BASE_SYS)
#define AT91_ALT_VA_BASE_SYS AT91_ALT_IO_P2V(AT91_ALT_BASE_SYS)
/* Internal SRAM is mapped below the IO devices */
#define AT91_SRAM_MAX SZ_1M

33
arch/arm/mach-at91/include/mach/sama5d4.h Normal file
View File

@ -0,0 +1,33 @@
/*
* Chip-specific header file for the SAMA5D4 family
*
* Copyright (C) 2013 Atmel Corporation,
* Nicolas Ferre <nicolas.ferre@atmel.com>
*
* Common definitions.
* Based on SAMA5D4 datasheet.
*
* Licensed under GPLv2 or later.
*/
#ifndef SAMA5D4_H
#define SAMA5D4_H
/*
* User Peripheral physical base addresses.
*/
#define SAMA5D4_BASE_USART3 0xfc00c000 /* (USART3 non-secure) Base Address */
#define SAMA5D4_BASE_PMC 0xf0018000 /* (PMC) Base Address */
#define SAMA5D4_BASE_MPDDRC 0xf0010000 /* (MPDDRC) Base Address */
#define SAMA5D4_BASE_PIOD 0xfc068000 /* (PIOD) Base Address */
/* Some other peripherals */
#define SAMA5D4_BASE_SYS2 SAMA5D4_BASE_PIOD
/*
* Internal Memory.
*/
#define SAMA5D4_NS_SRAM_BASE 0x00210000 /* Internal SRAM base address Non-Secure */
#define SAMA5D4_NS_SRAM_SIZE (64 * SZ_1K) /* Internal SRAM size Non-Secure part (64Kb) */
#endif

21
arch/arm/mach-at91/include/mach/uncompress.h
View File

@ -94,7 +94,7 @@ static const u32 uarts_sam9x5[] = {
0,
};
static const u32 uarts_sama5[] = {
static const u32 uarts_sama5d3[] = {
AT91_BASE_DBGU1,
SAMA5D3_BASE_USART0,
SAMA5D3_BASE_USART1,
@ -103,6 +103,12 @@ static const u32 uarts_sama5[] = {
0,
};
static const u32 uarts_sama5d4[] = {
AT91_BASE_DBGU2,
SAMA5D4_BASE_USART3,
0,
};
static inline const u32* decomp_soc_detect(void __iomem *dbgu_base)
{
u32 cidr, socid;
@ -134,8 +140,14 @@ static inline const u32* decomp_soc_detect(void __iomem *dbgu_base)
case ARCH_ID_AT91SAM9X5:
return uarts_sam9x5;
case ARCH_ID_SAMA5D3:
return uarts_sama5;
case ARCH_ID_SAMA5:
cidr = __raw_readl(dbgu_base + AT91_DBGU_EXID);
if (cidr & ARCH_EXID_SAMA5D3)
return uarts_sama5d3;
else if (cidr & ARCH_EXID_SAMA5D4)
return uarts_sama5d4;
break;
}
/* at91sam9g10 */
@ -156,9 +168,10 @@ static inline void arch_decomp_setup(void)
const u32* usarts;
usarts = decomp_soc_detect((void __iomem *)AT91_BASE_DBGU0);
if (!usarts)
usarts = decomp_soc_detect((void __iomem *)AT91_BASE_DBGU1);
if (!usarts)
usarts = decomp_soc_detect((void __iomem *)AT91_BASE_DBGU2);
if (!usarts) {
at91_uart = NULL;
return;

64
arch/arm/mach-at91/sama5d4.c Normal file
View File

@ -0,0 +1,64 @@
/*
* Chip-specific setup code for the SAMA5D4 family
*
* Copyright (C) 2013 Atmel Corporation,
* Nicolas Ferre <nicolas.ferre@atmel.com>
*
* Licensed under GPLv2 or later.
*/
#include <linux/module.h>
#include <linux/dma-mapping.h>
#include <linux/clk/at91_pmc.h>
#include <asm/irq.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <mach/sama5d4.h>
#include <mach/cpu.h>
#include <mach/hardware.h>
#include "soc.h"
#include "generic.h"
#include "sam9_smc.h"
/* --------------------------------------------------------------------
* Processor initialization
* -------------------------------------------------------------------- */
static struct map_desc at91_io_desc[] __initdata = {
{
.virtual = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_MPDDRC),
.pfn = __phys_to_pfn(SAMA5D4_BASE_MPDDRC),
.length = SZ_512,
.type = MT_DEVICE,
},
{
.virtual = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_PMC),
.pfn = __phys_to_pfn(SAMA5D4_BASE_PMC),
.length = SZ_512,
.type = MT_DEVICE,
},
{ /* On sama5d4, we use USART3 as serial console */
.virtual = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_USART3),
.pfn = __phys_to_pfn(SAMA5D4_BASE_USART3),
.length = SZ_256,
.type = MT_DEVICE,
},
{ /* A bunch of peripheral with fine grained IO space */
.virtual = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_SYS2),
.pfn = __phys_to_pfn(SAMA5D4_BASE_SYS2),
.length = SZ_2K,
.type = MT_DEVICE,
},
};
static void __init sama5d4_map_io(void)
{
iotable_init(at91_io_desc, ARRAY_SIZE(at91_io_desc));
at91_init_sram(0, SAMA5D4_NS_SRAM_BASE, SAMA5D4_NS_SRAM_SIZE);
}
AT91_SOC_START(sama5d4)
.map_io = sama5d4_map_io,
AT91_SOC_END

97
arch/arm/mach-at91/setup.c
View File

@ -96,6 +96,13 @@ static struct map_desc at91_io_desc __initdata __maybe_unused = {
.type = MT_DEVICE,
};
static struct map_desc at91_alt_io_desc __initdata __maybe_unused = {
.virtual = (unsigned long)AT91_ALT_VA_BASE_SYS,
.pfn = __phys_to_pfn(AT91_ALT_BASE_SYS),
.length = 24 * SZ_1K,
.type = MT_DEVICE,
};
static void __init soc_detect(u32 dbgu_base)
{
u32 cidr, socid;
@ -158,9 +165,12 @@ static void __init soc_detect(u32 dbgu_base)
at91_boot_soc = at91sam9n12_soc;
break;
case ARCH_ID_SAMA5D3:
at91_soc_initdata.type = AT91_SOC_SAMA5D3;
at91_boot_soc = sama5d3_soc;
case ARCH_ID_SAMA5:
at91_soc_initdata.exid = __raw_readl(AT91_IO_P2V(dbgu_base) + AT91_DBGU_EXID);
if (at91_soc_initdata.exid & ARCH_EXID_SAMA5D3) {
at91_soc_initdata.type = AT91_SOC_SAMA5D3;
at91_boot_soc = sama5d3_soc;
}
break;
}
@ -183,7 +193,8 @@ static void __init soc_detect(u32 dbgu_base)
at91_soc_initdata.cidr = cidr;
/* sub version of soc */
at91_soc_initdata.exid = __raw_readl(AT91_IO_P2V(dbgu_base) + AT91_DBGU_EXID);
if (!at91_soc_initdata.exid)
at91_soc_initdata.exid = __raw_readl(AT91_IO_P2V(dbgu_base) + AT91_DBGU_EXID);
if (at91_soc_initdata.type == AT91_SOC_SAM9G45) {
switch (at91_soc_initdata.exid) {
@ -240,6 +251,54 @@ static void __init soc_detect(u32 dbgu_base)
}
}
static void __init alt_soc_detect(u32 dbgu_base)
{
u32 cidr, socid;
/* SoC ID */
cidr = __raw_readl(AT91_ALT_IO_P2V(dbgu_base) + AT91_DBGU_CIDR);
socid = cidr & ~AT91_CIDR_VERSION;
switch (socid) {
case ARCH_ID_SAMA5:
at91_soc_initdata.exid = __raw_readl(AT91_ALT_IO_P2V(dbgu_base) + AT91_DBGU_EXID);
if (at91_soc_initdata.exid & ARCH_EXID_SAMA5D3) {
at91_soc_initdata.type = AT91_SOC_SAMA5D3;
at91_boot_soc = sama5d3_soc;
} else if (at91_soc_initdata.exid & ARCH_EXID_SAMA5D4) {
at91_soc_initdata.type = AT91_SOC_SAMA5D4;
at91_boot_soc = sama5d4_soc;
}
break;
}
if (!at91_soc_is_detected())
return;
at91_soc_initdata.cidr = cidr;
/* sub version of soc */
if (!at91_soc_initdata.exid)
at91_soc_initdata.exid = __raw_readl(AT91_ALT_IO_P2V(dbgu_base) + AT91_DBGU_EXID);
if (at91_soc_initdata.type == AT91_SOC_SAMA5D4) {
switch (at91_soc_initdata.exid) {
case ARCH_EXID_SAMA5D41:
at91_soc_initdata.subtype = AT91_SOC_SAMA5D41;
break;
case ARCH_EXID_SAMA5D42:
at91_soc_initdata.subtype = AT91_SOC_SAMA5D42;
break;
case ARCH_EXID_SAMA5D43:
at91_soc_initdata.subtype = AT91_SOC_SAMA5D43;
break;
case ARCH_EXID_SAMA5D44:
at91_soc_initdata.subtype = AT91_SOC_SAMA5D44;
break;
}
}
}
static const char *soc_name[] = {
[AT91_SOC_RM9200] = "at91rm9200",
[AT91_SOC_SAM9260] = "at91sam9260",
@ -252,6 +311,7 @@ static const char *soc_name[] = {
[AT91_SOC_SAM9X5] = "at91sam9x5",
[AT91_SOC_SAM9N12] = "at91sam9n12",
[AT91_SOC_SAMA5D3] = "sama5d3",
[AT91_SOC_SAMA5D4] = "sama5d4",
[AT91_SOC_UNKNOWN] = "Unknown",
};
@ -279,6 +339,10 @@ static const char *soc_subtype_name[] = {
[AT91_SOC_SAMA5D34] = "sama5d34",
[AT91_SOC_SAMA5D35] = "sama5d35",
[AT91_SOC_SAMA5D36] = "sama5d36",
[AT91_SOC_SAMA5D41] = "sama5d41",
[AT91_SOC_SAMA5D42] = "sama5d42",
[AT91_SOC_SAMA5D43] = "sama5d43",
[AT91_SOC_SAMA5D44] = "sama5d44",
[AT91_SOC_SUBTYPE_NONE] = "None",
[AT91_SOC_SUBTYPE_UNKNOWN] = "Unknown",
};
@ -341,6 +405,31 @@ void __init at91_ioremap_rstc(u32 base_addr)
panic("Impossible to ioremap at91_rstc_base\n");
}
void __init at91_alt_map_io(void)
{
/* Map peripherals */
iotable_init(&at91_alt_io_desc, 1);
at91_soc_initdata.type = AT91_SOC_UNKNOWN;
at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_UNKNOWN;
alt_soc_detect(AT91_BASE_DBGU2);
if (!at91_soc_is_detected())
panic("AT91: Impossible to detect the SOC type");
pr_info("AT91: Detected soc type: %s\n",
at91_get_soc_type(&at91_soc_initdata));
if (at91_soc_initdata.subtype != AT91_SOC_SUBTYPE_NONE)
pr_info("AT91: Detected soc subtype: %s\n",
at91_get_soc_subtype(&at91_soc_initdata));
if (!at91_soc_is_enabled())
panic("AT91: Soc not enabled");
if (at91_boot_soc.map_io)
at91_boot_soc.map_io();
}
void __iomem *at91_matrix_base;
EXPORT_SYMBOL_GPL(at91_matrix_base);

5
arch/arm/mach-at91/soc.h
View File

@ -24,6 +24,7 @@ extern struct at91_init_soc at91sam9rl_soc;
extern struct at91_init_soc at91sam9x5_soc;
extern struct at91_init_soc at91sam9n12_soc;
extern struct at91_init_soc sama5d3_soc;
extern struct at91_init_soc sama5d4_soc;
#define AT91_SOC_START(_name) \
struct at91_init_soc __initdata _name##_soc \
@ -74,3 +75,7 @@ static inline int at91_soc_is_enabled(void)
#if !defined(CONFIG_SOC_SAMA5D3)
#define sama5d3_soc at91_boot_soc
#endif
#if !defined(CONFIG_SOC_SAMA5D4)
#define sama5d4_soc at91_boot_soc
#endif

1
drivers/clk/at91/Makefile
View File

@ -9,3 +9,4 @@ obj-y += clk-system.o clk-peripheral.o clk-programmable.o
obj-$(CONFIG_HAVE_AT91_UTMI) += clk-utmi.o
obj-$(CONFIG_HAVE_AT91_USB_CLK) += clk-usb.o
obj-$(CONFIG_HAVE_AT91_SMD) += clk-smd.o
obj-$(CONFIG_HAVE_AT91_H32MX) += clk-h32mx.o

123
drivers/clk/at91/clk-h32mx.c Normal file
View File

@ -0,0 +1,123 @@
/*
* clk-h32mx.c
*
* Copyright (C) 2014 Atmel
*
* Alexandre Belloni <alexandre.belloni@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.
*
*/
#include <linux/clk-provider.h>
#include <linux/clkdev.h>
#include <linux/clk/at91_pmc.h>
#include <linux/delay.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/sched.h>
#include <linux/wait.h>
#include "pmc.h"
#define H32MX_MAX_FREQ 90000000
struct clk_sama5d4_h32mx {
struct clk_hw hw;
struct at91_pmc *pmc;
};
#define to_clk_sama5d4_h32mx(hw) container_of(hw, struct clk_sama5d4_h32mx, hw)
static unsigned long clk_sama5d4_h32mx_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct clk_sama5d4_h32mx *h32mxclk = to_clk_sama5d4_h32mx(hw);
if (pmc_read(h32mxclk->pmc, AT91_PMC_MCKR) & AT91_PMC_H32MXDIV)
return parent_rate / 2;
if (parent_rate > H32MX_MAX_FREQ)
pr_warn("H32MX clock is too fast\n");
return parent_rate;
}
static long clk_sama5d4_h32mx_round_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *parent_rate)
{
unsigned long div;
if (rate > *parent_rate)
return *parent_rate;
div = *parent_rate / 2;
if (rate < div)
return div;
if (rate - div < *parent_rate - rate)
return div;
return *parent_rate;
}
static int clk_sama5d4_h32mx_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
struct clk_sama5d4_h32mx *h32mxclk = to_clk_sama5d4_h32mx(hw);
struct at91_pmc *pmc = h32mxclk->pmc;
u32 tmp;
if (parent_rate != rate && (parent_rate / 2) != rate)
return -EINVAL;
pmc_lock(pmc);
tmp = pmc_read(pmc, AT91_PMC_MCKR) & ~AT91_PMC_H32MXDIV;
if ((parent_rate / 2) == rate)
tmp |= AT91_PMC_H32MXDIV;
pmc_write(pmc, AT91_PMC_MCKR, tmp);
pmc_unlock(pmc);
return 0;
}
static const struct clk_ops h32mx_ops = {
.recalc_rate = clk_sama5d4_h32mx_recalc_rate,
.round_rate = clk_sama5d4_h32mx_round_rate,
.set_rate = clk_sama5d4_h32mx_set_rate,
};
void __init of_sama5d4_clk_h32mx_setup(struct device_node *np,
struct at91_pmc *pmc)
{
struct clk_sama5d4_h32mx *h32mxclk;
struct clk_init_data init;
const char *parent_name;
struct clk *clk;
h32mxclk = kzalloc(sizeof(*h32mxclk), GFP_KERNEL);
if (!h32mxclk)
return;
parent_name = of_clk_get_parent_name(np, 0);
init.name = np->name;
init.ops = &h32mx_ops;
init.parent_names = parent_name ? &parent_name : NULL;
init.num_parents = parent_name ? 1 : 0;
init.flags = CLK_SET_RATE_GATE;
h32mxclk->hw.init = &init;
h32mxclk->pmc = pmc;
clk = clk_register(NULL, &h32mxclk->hw);
if (!clk)
return;
of_clk_add_provider(np, of_clk_src_simple_get, clk);
}

6
drivers/clk/at91/pmc.c
View File

@ -336,6 +336,12 @@ static const struct of_device_id pmc_clk_ids[] __initconst = {
.compatible = "atmel,at91sam9x5-clk-smd",
.data = of_at91sam9x5_clk_smd_setup,
},
#endif
#if defined(CONFIG_HAVE_AT91_H32MX)
{
.compatible = "atmel,sama5d4-clk-h32mx",
.data = of_sama5d4_clk_h32mx_setup,
},
#endif
{ /*sentinel*/ }
};

5
drivers/clk/at91/pmc.h
View File

@ -120,4 +120,9 @@ extern void __init of_at91sam9x5_clk_smd_setup(struct device_node *np,
struct at91_pmc *pmc);
#endif
#if defined(CONFIG_HAVE_AT91_SMD)
extern void __init of_sama5d4_clk_h32mx_setup(struct device_node *np,
struct at91_pmc *pmc);
#endif
#endif /* __PMC_H_ */

1
include/linux/clk/at91_pmc.h
View File

@ -125,6 +125,7 @@ extern void __iomem *at91_pmc_base;
#define AT91_PMC_PLLADIV2 (1 << 12) /* PLLA divisor by 2 [some SAM9 only] */
#define AT91_PMC_PLLADIV2_OFF (0 << 12)
#define AT91_PMC_PLLADIV2_ON (1 << 12)
#define AT91_PMC_H32MXDIV BIT(24)
#define AT91_PMC_USB 0x38 /* USB Clock Register [some SAM9 only] */
#define AT91_PMC_USBS (0x1 << 0) /* USB OHCI Input clock selection */