[PATCH 6/6] arm: exynos4: Add a new Exynos4 device tree enabled machine
Grant Likely
grant.likely at secretlab.ca
Tue Jun 21 02:55:54 EST 2011
On Mon, Jun 20, 2011 at 5:02 AM, Thomas Abraham
<thomas.abraham at linaro.org> wrote:
> Basic Exynos4 machine with device tree support that can boot on a Exynos4
> based smdkv310 board and bring up the console.
>
> Signed-off-by: Thomas Abraham <thomas.abraham at linaro.org>
> ---
> Documentation/devicetree/bindings/arm/samsung.txt | 3 +-
> arch/arm/mach-exynos4/Kconfig | 11 +++
> arch/arm/mach-exynos4/Makefile | 1 +
> arch/arm/mach-exynos4/mach-exynos4-dt.c | 94 +++++++++++++++++++++
> 4 files changed, 108 insertions(+), 1 deletions(-)
> create mode 100644 arch/arm/mach-exynos4/mach-exynos4-dt.c
>
> diff --git a/Documentation/devicetree/bindings/arm/samsung.txt b/Documentation/devicetree/bindings/arm/samsung.txt
> index 594cb97..80d29bb 100644
> --- a/Documentation/devicetree/bindings/arm/samsung.txt
> +++ b/Documentation/devicetree/bindings/arm/samsung.txt
> @@ -4,6 +4,7 @@ Samsung Exynos4 S5PV310 SoC based SMDKV310 eval board
> Samsung's Exynos4 family of application processors.
>
> Required root node properties:
> - - compatible = "samsung,smdkv310","samsung,s5pv310"
> + - compatible = "samsung,smdkv310","samsung,s5pv310", "samsung,exynos4210'.
> (a) "samsung,smdkv310" - for Samsung's SMDKV310 eval board.
> (b) "samsung,s5pv310" - for boards based on S5PV310 SoC.
> + (c) "samsung,exynos4210" - for boards based on Exynos4210 processor.
> diff --git a/arch/arm/mach-exynos4/Kconfig b/arch/arm/mach-exynos4/Kconfig
> index 1435fc3..412e0c5 100644
> --- a/arch/arm/mach-exynos4/Kconfig
> +++ b/arch/arm/mach-exynos4/Kconfig
> @@ -186,6 +186,17 @@ config MACH_NURI
> help
> Machine support for Samsung Mobile NURI Board.
>
> +config MACH_EXYNOS4_DT
> + bool "Samsung's Exynos4 Machine with DT support"
> + select CPU_EXYNOS4210
> + select USE_OF
> + select S3C_DEV_WDT
> + select S3C_DEV_HSMMC
> + select S3C_DEV_HSMMC2
> + select EXYNOS4_SETUP_SDHCI
> + help
> + Machine support for Samsung Exynos4 machine with device tree enabled.
> +
> endmenu
>
> comment "Configuration for HSMMC bus width"
> diff --git a/arch/arm/mach-exynos4/Makefile b/arch/arm/mach-exynos4/Makefile
> index 60fe5ec..6491e5b 100644
> --- a/arch/arm/mach-exynos4/Makefile
> +++ b/arch/arm/mach-exynos4/Makefile
> @@ -36,6 +36,7 @@ obj-$(CONFIG_MACH_SMDKV310) += mach-smdkv310.o
> obj-$(CONFIG_MACH_ARMLEX4210) += mach-armlex4210.o
> obj-$(CONFIG_MACH_UNIVERSAL_C210) += mach-universal_c210.o
> obj-$(CONFIG_MACH_NURI) += mach-nuri.o
> +obj-$(CONFIG_MACH_EXYNOS4_DT) += mach-exynos4-dt.o
>
> # device support
>
> diff --git a/arch/arm/mach-exynos4/mach-exynos4-dt.c b/arch/arm/mach-exynos4/mach-exynos4-dt.c
> new file mode 100644
> index 0000000..34267d8
> --- /dev/null
> +++ b/arch/arm/mach-exynos4/mach-exynos4-dt.c
> @@ -0,0 +1,94 @@
> +/*
> + * Samsung's Exynos4210 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/serial_core.h>
> +#include <linux/platform_device.h>
> +#include <linux/io.h>
> +#include <linux/of_platform.h>
> +#include <linux/irq.h>
> +
> +#include <asm/mach/arch.h>
> +#include <asm/mach-types.h>
> +
> +#include <plat/regs-serial.h>
> +#include <plat/exynos4.h>
> +#include <plat/cpu.h>
> +#include <plat/sdhci.h>
> +
> +#include <mach/map.h>
> +
> +static struct s3c_sdhci_platdata smdkv310_hsmmc0_pdata __initdata = {
> + .cd_type = S3C_SDHCI_CD_INTERNAL,
> + .clk_type = S3C_SDHCI_CLK_DIV_EXTERNAL,
> +#ifdef CONFIG_EXYNOS4_SDHCI_CH0_8BIT
> + .max_width = 8,
> + .host_caps = MMC_CAP_8_BIT_DATA,
> +#endif
> +};
> +
> +static struct s3c_sdhci_platdata smdkv310_hsmmc2_pdata __initdata = {
> + .cd_type = S3C_SDHCI_CD_INTERNAL,
> + .clk_type = S3C_SDHCI_CLK_DIV_EXTERNAL,
> +#ifdef CONFIG_EXYNOS4_SDHCI_CH2_8BIT
> + .max_width = 8,
> + .host_caps = MMC_CAP_8_BIT_DATA,
> +#endif
> +};
> +
> +static const struct of_dev_auxdata exynos4_auxdata_lookup[] __initconst = {
> + OF_DEV_AUXDATA("samsung,s3c-sdhci", EXYNOS4_PA_HSMMC(2),
> + "s3c-sdhci.2", &s3c_hsmmc2_def_platdata),
> + OF_DEV_AUXDATA("samsung,s3c-sdhci", EXYNOS4_PA_HSMMC(0),
> + "s3c-sdhci.0", &s3c_hsmmc0_def_platdata),
> + OF_DEV_AUXDATA("samsung,s5pv210-uart", S5P_PA_UART0,
> + "s5pv210-uart.0", NULL),
> + OF_DEV_AUXDATA("samsung,s5pv210-uart", S5P_PA_UART1,
> + "s5pv210-uart.1", NULL),
> + {},
> +};
> +
> +static void __init exynos4_dt_map_io(void)
> +{
> + s5p_init_io(NULL, 0, S5P_VA_CHIPID);
> + s3c24xx_init_clocks(24000000);
> +}
> +
> +static const struct of_device_id intc_of_match[] __initconst = {
> + { .compatible = "samsung,exynos4-gic", },
> + {}
> +};
> +
> +static void __init exynos4_dt_machine_init(void)
> +{
> + s3c_sdhci0_set_platdata(&smdkv310_hsmmc0_pdata);
> + s3c_sdhci2_set_platdata(&smdkv310_hsmmc2_pdata);
Are these two lines still necessary?
Otherwise, the patch looks good to me.
g.
> +
> + irq_domain_generate_simple(intc_of_match, EXYNOS4_PA_GIC_DIST, 0);
> + of_platform_populate(NULL, of_default_bus_match_table,
> + exynos4_auxdata_lookup, NULL);
> +}
> +
> +static char const *exynos4_dt_compat[] __initdata = {
> + "samsung,exynos4210",
> + NULL
> +};
> +
> +DT_MACHINE_START(SMDKV310, "Samsung Exynos4 DT")
> + /* Maintainer: Kukjin Kim <kgene.kim at samsung.com> */
> + .boot_params = S5P_PA_SDRAM + 0x100,
> + .init_irq = exynos4_init_irq,
> + .map_io = exynos4_dt_map_io,
> + .init_machine = exynos4_dt_machine_init,
> + .timer = &exynos4_timer,
> + .dt_compat = exynos4_dt_compat,
> +MACHINE_END
> --
> 1.6.6.rc2
>
>
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>
--
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
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