On 03/02/2017 10:18 AM, Sergio Prado wrote:
> Adds the device tree bindings description for Samsung S3C24XX
> MMC/SD/SDIO controller, used as a connectivity interface with external
> MMC, SD and SDIO storage mediums.
>
> Signed-off-by: Sergio Prado <sergio.prado@xxxxxxxxxxxxxx>
> ---
> .../devicetree/bindings/mmc/samsung,s3cmci.txt | 42 ++++++++++++++++++++++
> 1 file changed, 42 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/mmc/samsung,s3cmci.txt
>
> diff --git a/Documentation/devicetree/bindings/mmc/samsung,s3cmci.txt b/Documentation/devicetree/bindings/mmc/samsung,s3cmci.txt
> new file mode 100644
> index 000000000000..5f68feb9f9d6
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mmc/samsung,s3cmci.txt
> @@ -0,0 +1,42 @@
> +* Samsung's S3C24XX MMC/SD/SDIO controller device tree bindings
> +
> +Samsung's S3C24XX MMC/SD/SDIO controller is used as a connectivity interface
> +with external MMC, SD and SDIO storage mediums.
> +
> +This file documents differences between the core mmc properties described by
> +mmc.txt and the properties used by the Samsung S3C24XX MMC/SD/SDIO controller
> +implementation.
> +
> +Required SoC Specific Properties:
> +- compatible: should be one of the following
> + - "samsung,s3c2410-sdi": for controllers compatible with s3c2410
> + - "samsung,s3c2412-sdi": for controllers compatible with s3c2412
> + - "samsung,s3c2440-sdi": for controllers compatible with s3c2440
> +- reg: register location and length
> +- interrupts: mmc controller interrupt
> +- clocks: Should reference the controller clock
> +- clock-names: Should contain "sdi"
> +
> +Required Board Specific Properties:
> +- pinctrl-0: Should specify pin control groups used for this controller.
> +- pinctrl-names: Should contain only one value - "default".
> +
> +Optional Properties:
> +- bus-width: number of data lines (see mmc.txt)
> +- cd-gpios: gpio for card detection (see mmc.txt)
> +- wp-gpios: gpio for write protection (see mmc.txt)
I think these properties don't need to describe at here.
It's common properties.
Best Regards,
Jaehoon Chung
> +
> +Example:
> +
> + mmc0: mmc@5a000000 {
> + compatible = "samsung,s3c2440-sdi";
> + pinctrl-names = "default";
> + pinctrl-0 = <&sdi_pins>;
> + reg = <0x5a000000 0x100000>;
> + interrupts = <0 0 21 3>;
> + clocks = <&clocks PCLK_SDI>;
> + clock-names = "sdi";
> + bus-width = <4>;
> + cd-gpios = <&gpg 8 GPIO_ACTIVE_LOW>;
> + wp-gpios = <&gph 8 GPIO_ACTIVE_LOW>;
> + };
>
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