From b3e68fb17a25ffa73610a21bf3974b7297026a0f Mon Sep 17 00:00:00 2001 From: Kukjin Kim Date: Fri, 10 Feb 2012 13:13:15 +0900 Subject: [PATCH] ARM: EXYNOS: add support device tree enabled board file for EXYNOS5 This patch adds a new EXYNOS5 compatible device tree enabled board When using this, a corresponding device tree blob which describes the board's properties should be supplied at boot time to the kernel. Cc: Thomas Abraham Cc: Grant Likely Signed-off-by: Kukjin Kim --- arch/arm/mach-exynos/Kconfig | 11 +++- arch/arm/mach-exynos/Makefile | 1 + arch/arm/mach-exynos/mach-exynos5-dt.c | 78 ++++++++++++++++++++++++++ 3 files changed, 89 insertions(+), 1 deletion(-) create mode 100644 arch/arm/mach-exynos/mach-exynos5-dt.c diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig index a2ed05c4eb46..42f072db1145 100644 --- a/arch/arm/mach-exynos/Kconfig +++ b/arch/arm/mach-exynos/Kconfig @@ -362,7 +362,7 @@ config MACH_SMDK4412 Machine support for Samsung SMDK4412 endif -comment "Flattened Device Tree based board for Exynos4 based SoC" +comment "Flattened Device Tree based board for EXYNOS SoCs" config MACH_EXYNOS4_DT bool "Samsung Exynos4 Machine using device tree" @@ -376,6 +376,15 @@ config MACH_EXYNOS4_DT Note: This is under development and not all peripherals can be supported with this machine file. +config MACH_EXYNOS5_DT + bool "SAMSUNG EXYNOS5 Machine using device tree" + select SOC_EXYNOS5250 + select USE_OF + select ARM_AMBA + 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. + if ARCH_EXYNOS4 comment "Configuration for HSMMC 8-bit bus width" diff --git a/arch/arm/mach-exynos/Makefile b/arch/arm/mach-exynos/Makefile index 7214092b5196..29967efd262a 100644 --- a/arch/arm/mach-exynos/Makefile +++ b/arch/arm/mach-exynos/Makefile @@ -42,6 +42,7 @@ obj-$(CONFIG_MACH_SMDK4212) += mach-smdk4x12.o obj-$(CONFIG_MACH_SMDK4412) += mach-smdk4x12.o obj-$(CONFIG_MACH_EXYNOS4_DT) += mach-exynos4-dt.o +obj-$(CONFIG_MACH_EXYNOS5_DT) += mach-exynos5-dt.o # device support diff --git a/arch/arm/mach-exynos/mach-exynos5-dt.c b/arch/arm/mach-exynos/mach-exynos5-dt.c new file mode 100644 index 000000000000..0d26f50081ad --- /dev/null +++ b/arch/arm/mach-exynos/mach-exynos5-dt.c @@ -0,0 +1,78 @@ +/* + * SAMSUNG EXYNOS5250 Flattened Device Tree enabled machine + * + * Copyright (c) 2012 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * 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 +#include + +#include +#include +#include + +#include +#include + +#include "common.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 EXYNOS5 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 exynos5250_auxdata_lookup[] __initconst = { + OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5_PA_UART0, + "exynos4210-uart.0", NULL), + OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5_PA_UART1, + "exynos4210-uart.1", NULL), + OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5_PA_UART2, + "exynos4210-uart.2", NULL), + OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5_PA_UART3, + "exynos4210-uart.3", NULL), + OF_DEV_AUXDATA("arm,pl330", EXYNOS5_PA_PDMA0, "dma-pl330.0", NULL), + OF_DEV_AUXDATA("arm,pl330", EXYNOS5_PA_PDMA1, "dma-pl330.1", NULL), + OF_DEV_AUXDATA("arm,pl330", EXYNOS5_PA_PDMA1, "dma-pl330.2", NULL), + {}, +}; + +static void __init exynos5250_dt_map_io(void) +{ + exynos_init_io(NULL, 0); + s3c24xx_init_clocks(24000000); +} + +static void __init exynos5250_dt_machine_init(void) +{ + of_platform_populate(NULL, of_default_bus_match_table, + exynos5250_auxdata_lookup, NULL); +} + +static char const *exynos5250_dt_compat[] __initdata = { + "samsung,exynos5250", + NULL +}; + +DT_MACHINE_START(EXYNOS5_DT, "SAMSUNG EXYNOS5 (Flattened Device Tree)") + /* Maintainer: Kukjin Kim */ + .init_irq = exynos5_init_irq, + .map_io = exynos5250_dt_map_io, + .handle_irq = gic_handle_irq, + .init_machine = exynos5250_dt_machine_init, + .timer = &exynos4_timer, + .dt_compat = exynos5250_dt_compat, + .restart = exynos5_restart, +MACHINE_END -- 2.20.1