Hi Yuvaraj,
On Mon, Aug 19, 2013 at 12:09 PM, Yuvaraj Kumar C D
<yuvaraj.cd@xxxxxxxxx> wrote:
> This patch adds the device tree node entries for exynos5420 SOC.
> Exynos5420 has a different version of DWMMC controller,so a new
> compatible string is used to distinguish it from the prior SOC's.
>
> Signed-off-by: Yuvaraj Kumar C D <yuvaraj.cd@xxxxxxxxxxx>
> ---
> .../devicetree/bindings/mmc/exynos-dw-mshc.txt | 2 +
> arch/arm/boot/dts/exynos5420-smdk5420.dts | 41 ++++++++++++++++++++
> arch/arm/boot/dts/exynos5420.dtsi | 33 ++++++++++++++++
> 3 files changed, 76 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt
> index 6d1c098..84cd56f 100644
> --- a/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt
> +++ b/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt
> @@ -16,6 +16,8 @@ Required Properties:
> specific extensions.
> - "samsung,exynos5250-dw-mshc": for controllers with Samsung Exynos5250
> specific extensions.
> + - "samsung,exynos5420-dw-mshc": for controllers with Samsung Exynos5420
> + specific extensions.
>
> * samsung,dw-mshc-ciu-div: Specifies the divider value for the card interface
> unit (ciu) clock. This property is applicable only for Exynos5 SoC's and
> diff --git a/arch/arm/boot/dts/exynos5420-smdk5420.dts b/arch/arm/boot/dts/exynos5420-smdk5420.dts
> index 08607df..4530700 100644
> --- a/arch/arm/boot/dts/exynos5420-smdk5420.dts
> +++ b/arch/arm/boot/dts/exynos5420-smdk5420.dts
> @@ -30,4 +30,45 @@
> clock-frequency = <24000000>;
> };
> };
> +
> + dwmmc0@12200000 {
> + num-slots = <1>;
> + broken-cd;
> + bypass-smu;
> + supports-highspeed;
> + fifo-depth = <0x80>;
> + card-detect-delay = <200>;
> + samsung,dw-mshc-ciu-div = <3>;
> + samsung,dw-mshc-sdr-timing = <0 4>;
> + samsung,dw-mshc-ddr-timing = <0 2>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&sd0_clk &sd0_cmd &sd0_bus4 &sd0_bus8>;
> +
> + slot@0 {
> + reg = <0>;
> + bus-width = <8>;
> + };
> + };
with these bindings if the MMC is operational, then IMHO its better to
make its status as "okay".
> +
> + dwmmc1@12210000 {
> + status = "disabled";
> + };
> +
> + dwmmc2@12220000 {
ditto.
> + 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>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_bus4>;
> +
> + slot@0 {
> + reg = <0>;
> + bus-width = <4>;
> + };
> + };
> +
> };
> diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi
> index 9e90d1e..8559aa8 100644
> --- a/arch/arm/boot/dts/exynos5420.dtsi
> +++ b/arch/arm/boot/dts/exynos5420.dtsi
> @@ -19,6 +19,9 @@
> compatible = "samsung,exynos5420";
>
> aliases {
> + mshc0 = &dwmmc_0;
> + mshc1 = &dwmmc_1;
> + mshc2 = &dwmmc_2;
> pinctrl0 = &pinctrl_0;
> pinctrl1 = &pinctrl_1;
> pinctrl2 = &pinctrl_2;
> @@ -65,6 +68,36 @@
> #clock-cells = <1>;
> };
>
> + dwmmc_0: dwmmc0@12200000 {
> + compatible = "samsung,exynos5420-dw-mshc";
> + interrupts = <0 75 0>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x12200000 0x2000>;
> + clocks = <&clock 351>, <&clock 132>;
> + clock-names = "biu", "ciu";
with these bindings if the MMC is NOT operational yet, then IMHO its
better to make its status as "disabled".
> + };
> +
> + dwmmc_1: dwmmc1@12210000 {
> + compatible = "samsung,exynos5420-dw-mshc";
> + interrupts = <0 76 0>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x12210000 0x2000>;
> + clocks = <&clock 352>, <&clock 133>;
> + clock-names = "biu", "ciu";
ditto.
> + };
> +
> + dwmmc_2: dwmmc2@12220000 {
> + compatible = "samsung,exynos5420-dw-mshc";
> + interrupts = <0 77 0>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x12220000 0x2000>;
> + clocks = <&clock 353>, <&clock 134>;
> + clock-names = "biu", "ciu";
ditto.
> + };
> +
> mct@101C0000 {
> compatible = "samsung,exynos4210-mct";
> reg = <0x101C0000 0x800>;
> --
> 1.7.9.5
>
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