Re: [PATCH] ARM: DTS: exynos5250-arndale: Add initial board support file

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Hi Tushar,

On Thu, Jan 24, 2013 at 11:46 AM, Tushar Behera
<tushar.behera@xxxxxxxxxx> wrote:
> From: Girish K S <ks.giri@xxxxxxxxxxx>
>
> Arndale is a low cost board based on the Samsung Exynos5250 SoC. This
> patch adds initial device tree support for this board.
>
> Signed-off-by: Girish K S <ks.giri@xxxxxxxxxxx>
> Signed-off-by: Tushar Behera <tushar.behera@xxxxxxxxxx>
> ---
>  arch/arm/boot/dts/Makefile               |    1 +
>  arch/arm/boot/dts/exynos5250-arndale.dts |  124 ++++++++++++++++++++++++++++++
>  2 files changed, 125 insertions(+), 0 deletions(-)
>  create mode 100644 arch/arm/boot/dts/exynos5250-arndale.dts
>
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 5ebb44f..60a9e52 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -44,6 +44,7 @@ dtb-$(CONFIG_ARCH_EXYNOS) += exynos4210-origen.dtb \
>         exynos4210-trats.dtb \
>         exynos4412-smdk4412.dtb \
>         exynos5250-smdk5250.dtb \
> +       exynos5250-arndale.dtb \
>         exynos5250-snow.dtb \
>         exynos5440-ssdk5440.dtb
>  dtb-$(CONFIG_ARCH_HIGHBANK) += highbank.dtb \
> diff --git a/arch/arm/boot/dts/exynos5250-arndale.dts b/arch/arm/boot/dts/exynos5250-arndale.dts
> new file mode 100644
> index 0000000..7504cf3
> --- /dev/null
> +++ b/arch/arm/boot/dts/exynos5250-arndale.dts
> @@ -0,0 +1,124 @@
> +/*
> + * Samsung's Exynos5250 based Arndale board device tree source
> + *
> + * 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.
> +*/
> +
> +/dts-v1/;
> +/include/ "exynos5250.dtsi"
> +
> +/ {
> +       model = "Insignal Arndale evaluation board based on EXYNOS5250";
> +       compatible = "insignal,arndale", "samsung,exynos5250";
> +
> +       memory {
> +               reg = <0x40000000 0x80000000>;
> +       };
> +
> +       chosen {
> +               bootargs = "root=/dev/ram0 rw ramdisk=8192 initrd=0x41000000,8M console=ttySAC2,115200 init=/linuxrc";
> +       };
> +
> +       i2c@12C60000 {
> +               status = "disabled";
> +       };
> +
> +       i2c@12C70000 {
> +               status = "disabled";
> +       };
> +
> +       i2c@12C80000 {
> +               status = "disabled";
> +       };
> +
> +       i2c@12C90000 {
> +               status = "disabled";
> +       };
> +
> +       i2c@12CA0000 {
> +               status = "disabled";
> +       };
> +
> +       i2c@12CB0000 {
> +               status = "disabled";
> +       };
> +
> +       i2c@12CC0000 {
> +               status = "disabled";
> +       };
> +
> +       i2c@12CD0000 {
> +               status = "disabled";
> +       };
> +
> +       i2c@121D0000 {
> +               status = "disabled";
> +       };
> +

Why to disable these i2c devices here? Any particular reason?
You can moves these to exynos5250.dtsi which is suppose to be common
for all the exynos5250 platforms.
Please see the exynos4.dtsi for reference.

> +       dwmmc_0: dwmmc0@12200000 {
> +               num-slots = <1>;
> +               supports-highspeed;
> +               broken-cd;
> +               fifo-depth = <0x80>;
> +               card-detect-delay = <200>;
> +               samsung,dw-mshc-ciu-div = <3>;
> +               samsung,dw-mshc-sdr-timing = <2 3>;
> +               samsung,dw-mshc-ddr-timing = <1 2>;
> +
> +               slot@0 {
> +                       reg = <0>;
> +                       bus-width = <8>;
> +                       gpios = <&gpc0 0 2 0 3>, <&gpc0 1 2 0 3>,
> +                               <&gpc1 0 2 3 3>, <&gpc1 1 2 3 3>,
> +                               <&gpc1 2 2 3 3>, <&gpc1 3 2 3 3>,
> +                               <&gpc0 3 2 3 3>, <&gpc0 4 2 3 3>,
> +                               <&gpc0 5 2 3 3>, <&gpc0 6 2 3 3>;
> +               };
> +       };
> +
> +       dwmmc_1: dwmmc1@12210000 {
> +               status = "disabled";
> +       };
> +
> +       dwmmc_2: dwmmc2@12220000 {
> +               num-slots = <1>;
> +               supports-highspeed;
> +               fifo-depth = <0x80>;
> +               card-detect-delay = <200>;
> +               samsung,dw-mshc-ciu-div = <3>;
> +               samsung,dw-mshc-sdr-timing = <2 3>;
> +               samsung,dw-mshc-ddr-timing = <1 2>;
> +
> +               slot@0 {
> +                       reg = <0>;
> +                       bus-width = <4>;
> +                       samsung,cd-pinmux-gpio = <&gpc3 2 2 3 3>;
> +                       gpios = <&gpc3 0 2 0 3>, <&gpc3 1 2 0 3>,
> +                               <&gpc3 3 2 3 3>, <&gpc3 4 2 3 3>,
> +                               <&gpc3 5 2 3 3>, <&gpc3 6 2 3 3>,
> +                               <&gpc4 3 3 3 3>, <&gpc4 3 3 3 3>,
> +                               <&gpc4 5 3 3 3>, <&gpc4 6 3 3 3>;
> +               };
> +       };
> +
> +       dwmmc_3: dwmmc3@12230000 {
> +               status = "disabled";
> +       };
> +
> +       spi_0: spi@12d20000 {
> +               status = "disabled";
> +       };
> +
> +       spi_1: spi@12d30000 {
> +               status = "disabled";
> +       };
> +
> +       spi_2: spi@12d40000 {
> +               status = "disabled";
> +       };

Same as above.
> +};
> --
> 1.7.4.1
>
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-- 
Regards,
Alim
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