From 2d334297c6b816619d6c2c28bccec3b5a7e8a0d9 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 7 Mar 2012 15:04:07 +0000 Subject: [PATCH] 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 Acked-by: Linus Walleij Signed-off-by: Niklas Hernaeus Signed-off-by: Lee Jones Signed-off-by: Arnd Bergmann --- arch/arm/boot/dts/snowball.dts | 31 +++++++++++++++++++++++++++ arch/arm/mach-ux500/Makefile.boot | 1 + arch/arm/mach-ux500/board-mop500.c | 34 ++++++++++++++++++++++++++++++ 3 files changed, 66 insertions(+) create mode 100644 arch/arm/boot/dts/snowball.dts diff --git a/arch/arm/boot/dts/snowball.dts b/arch/arm/boot/dts/snowball.dts new file mode 100644 index 00000000000..ebcff9a9b87 --- /dev/null +++ b/arch/arm/boot/dts/snowball.dts @@ -0,0 +1,31 @@ +/* + * 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; + }; +}; diff --git a/arch/arm/mach-ux500/Makefile.boot b/arch/arm/mach-ux500/Makefile.boot index ff0a4b5b0a8..dd5cd00e255 100644 --- a/arch/arm/mach-ux500/Makefile.boot +++ b/arch/arm/mach-ux500/Makefile.boot @@ -2,3 +2,4 @@ params_phys-y := 0x00000100 initrd_phys-y := 0x00800000 +dtb-$(CONFIG_MACH_SNOWBALL) += snowball.dtb diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c index 04afcdf8b0c..0fb5dfd2ce5 100644 --- a/arch/arm/mach-ux500/board-mop500.c +++ b/arch/arm/mach-ux500/board-mop500.c @@ -30,6 +30,9 @@ #include #include +#include +#include + #include #include #include @@ -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 -- 2.39.2