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Commit 6b5ab4f4 authored by Thomas Abraham's avatar Thomas Abraham Committed by Kukjin Kim
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ARM: EXYNOS: Add Exynos4 device tree enabled board file 



Add a new EXYNOS4 compatible device tree enabled board file. Boards
based on the EXYNOS4 family of SoC's can use this as the machine/board
file. When using this machine fike, a corresponding device tree blob
which describes the board's properties should be supplied at boot time
to the kernel.

Signed-off-by: default avatarThomas Abraham <thomas.abraham@linaro.org>
Acked-by: default avatarGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
parent 39ce4084

Documentation/devicetree/bindings/arm/insignal-boards.txt

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* Insignal's Exynos4210 based Origen evaluation board



Origen low-cost evaluation board is based on Samsung's Exynos4210 SoC.



Required root node properties:

    - compatible = should be one or more of the following.

        (a) "samsung,smdkv310" - for Samsung's SMDKV310 eval board.

        (b) "samsung,exynos4210"  - for boards based on Exynos4210 SoC.

Documentation/devicetree/bindings/arm/samsung-boards.txt

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* Samsung's Exynos4210 based SMDKV310 evaluation board



SMDKV310 evaluation board is based on Samsung's Exynos4210 SoC.



Required root node properties:

    - compatible = should be one or more of the following.

        (a) "samsung,smdkv310" - for Samsung's SMDKV310 eval board.

        (b) "samsung,exynos4210"  - for boards based on Exynos4210 SoC.

arch/arm/mach-exynos/Kconfig

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@@ -337,6 +337,20 @@ config MACH_SMDK4412 
	  Machine support for Samsung SMDK4412

endif



comment "Flattened Device Tree based board for Exynos4 based SoC"



config MACH_EXYNOS4_DT

	bool "Samsung Exynos4 Machine using device tree"

	select CPU_EXYNOS4210

	select USE_OF

	select ARM_AMBA

	select HAVE_SAMSUNG_KEYPAD if INPUT_KEYBOARD

	help

	  Machine support for Samsung Exynos4 machine with device tree enabled.

	  Select this if a fdt blob is available for the Exynos4 SoC based board.

	  Note: This is under development and not all peripherals can be supported

	  with this machine file.



if ARCH_EXYNOS4



comment "Configuration for HSMMC 8-bit bus width"

arch/arm/mach-exynos/Makefile

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@@ -37,6 +37,8 @@ obj-$(CONFIG_MACH_ORIGEN) += mach-origen.o 
obj-$(CONFIG_MACH_SMDK4212)		+= mach-smdk4x12.o

obj-$(CONFIG_MACH_SMDK4412)		+= mach-smdk4x12.o



obj-$(CONFIG_MACH_EXYNOS4_DT)		+= mach-exynos4-dt.o



# device support



obj-$(CONFIG_ARCH_EXYNOS4)		+= dev-audio.o

arch/arm/mach-exynos/mach-exynos4-dt.c

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/*

 * Samsung's Exynos4210 flattened device tree enabled machine

 *

 * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.

 *		http://www.samsung.com

 * Copyright (c) 2010-2011 Linaro Ltd.

 *		www.linaro.org

 *

 * 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/of_platform.h>

#include <linux/serial_core.h>



#include <asm/mach/arch.h>

#include <mach/map.h>



#include <plat/cpu.h>

#include <plat/regs-serial.h>

#include <plat/exynos4.h>



/*

 * The following lookup table is used to override device names when devices

 * are registered from device tree. This is temporarily added to enable

 * device tree support addition for the Exynos4 architecture.

 *

 * For drivers that require platform data to be provided from the machine

 * file, a platform data pointer can also be supplied along with the

 * devices names. Usually, the platform data elements that cannot be parsed

 * from the device tree by the drivers (example: function pointers) are

 * supplied. But it should be noted that this is a temporary mechanism and

 * at some point, the drivers should be capable of parsing all the platform

 * data from the device tree.

 */

static const struct of_dev_auxdata exynos4210_auxdata_lookup[] __initconst = {

	OF_DEV_AUXDATA("samsung,exynos4210-uart", S5P_PA_UART0,

				"exynos4210-uart.0", NULL),

	OF_DEV_AUXDATA("samsung,exynos4210-uart", S5P_PA_UART1,

				"exynos4210-uart.1", NULL),

	OF_DEV_AUXDATA("samsung,exynos4210-uart", S5P_PA_UART2,

				"exynos4210-uart.2", NULL),

	OF_DEV_AUXDATA("samsung,exynos4210-uart", S5P_PA_UART3,

				"exynos4210-uart.3", NULL),

	OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(0),

				"exynos4-sdhci.0", NULL),

	OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(1),

				"exynos4-sdhci.1", NULL),

	OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(2),

				"exynos4-sdhci.2", NULL),

	OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(3),

				"exynos4-sdhci.3", NULL),

	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(0),

				"s3c2440-i2c.0", NULL),

	OF_DEV_AUXDATA("arm,pl330", EXYNOS4_PA_PDMA0, "dma-pl330.0", NULL),

	OF_DEV_AUXDATA("arm,pl330", EXYNOS4_PA_PDMA1, "dma-pl330.1", NULL),

	{},

};



static void __init exynos4210_dt_map_io(void)

{

	s5p_init_io(NULL, 0, S5P_VA_CHIPID);

	s3c24xx_init_clocks(24000000);

}



static void __init exynos4210_dt_machine_init(void)

{

	of_platform_populate(NULL, of_default_bus_match_table,

				exynos4210_auxdata_lookup, NULL);

}



static char const *exynos4210_dt_compat[] __initdata = {

	"samsung,exynos4210",

	NULL

};



DT_MACHINE_START(EXYNOS4210_DT, "Samsung Exynos4 (Flattened Device Tree)")

	/* Maintainer: Thomas Abraham <thomas.abraham@linaro.org> */

	.init_irq	= exynos4_init_irq,

	.map_io		= exynos4210_dt_map_io,

	.init_machine	= exynos4210_dt_machine_init,

	.timer		= &exynos4_timer,

	.dt_compat	= exynos4210_dt_compat,

MACHINE_END