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Commit 2d334297 authored by Arnd Bergmann's avatar Arnd Bergmann
Browse files

ARM: ux500: Initial Device Tree support for Snowball 



This provides very basic Device Tree support for ST-Ericsson's
low-cost development platform, Snowball. If Device Tree for
ux500 is enabled and the correct board is configured within the
Device Tree blob, the correct *_init_machine() will be called.

This patch is based on some original work completed by:
  Niklas Hernaeus <niklas.hernaeus@linaro.org>

Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarNiklas Hernaeus <niklas.hernaeus@linaro.org>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent e27fc6cf

arch/arm/boot/dts/snowball.dts

0 → 100644
+31 −0
Original line number Diff line number Diff line 
/*

 * Copyright 2011 ST-Ericsson AB

 *

 * The code contained herein is licensed under the GNU General Public

 * License. You may obtain a copy of the GNU General Public License

 * Version 2 or later at the following locations:

 *

 * http://www.opensource.org/licenses/gpl-license.html

 * http://www.gnu.org/copyleft/gpl.html

 */



/dts-v1/;



/ {

	model = "Calao Systems Snowball platform with device tree";

	compatible = "calaosystems,snowball-a9500";



	#address-cells = <1>;

	#size-cells = <1>;



	memory {

		reg = <0x00000000 0x20000000>;

	};



	soc-u9500 {

		#address-cells = <1>;

		#size-cells = <1>;

		compatible = "simple-bus";

		ranges;

	};

};

arch/arm/mach-ux500/Makefile.boot

+1 −0
Original line number Diff line number Diff line
@@ -2,3 +2,4 @@ 
params_phys-y	:= 0x00000100

initrd_phys-y	:= 0x00800000



dtb-$(CONFIG_MACH_SNOWBALL) += snowball.dtb

arch/arm/mach-ux500/board-mop500.c

+34 −0
Original line number Diff line number Diff line
@@ -30,6 +30,9 @@ 
#include <linux/gpio_keys.h>

#include <linux/delay.h>



#include <linux/of.h>

#include <linux/of_platform.h>



#include <linux/leds.h>

#include <asm/mach-types.h>

#include <asm/mach/arch.h>
@@ -738,3 +741,34 @@ MACHINE_START(SNOWBALL, "Calao Systems Snowball platform") 
	.handle_irq	= gic_handle_irq,

	.init_machine	= snowball_init_machine,

MACHINE_END



#ifdef CONFIG_MACH_UX500_DT

static void __init u8500_init_machine(void)

{

	if (of_machine_is_compatible("calaosystems,snowball-a9500"))

		return snowball_init_machine();

	else if (of_machine_is_compatible("st-ericsson,hrefv60+"))

		return hrefv60_init_machine();

	else if (of_machine_is_compatible("st-ericsson,mop500"))

		return mop500_init_machine();

}



static const char * u8500_dt_board_compat[] = {

	"calaosystems,snowball-a9500",

	"st-ericsson,hrefv60+",

	"st-ericsson,u8500",

	"st-ericsson,mop500",

	NULL,

};





DT_MACHINE_START(U8500_DT, "ST-Ericsson U8500 platform (Device Tree Support)")

	.map_io		= u8500_map_io,

	.init_irq	= ux500_init_irq,

	/* we re-use nomadik timer here */

	.timer		= &ux500_timer,

	.handle_irq	= gic_handle_irq,

	.init_machine	= u8500_init_machine,

	.dt_compat      = u8500_dt_board_compat,

MACHINE_END

#endif