On 19 May 2015 at 08:36, Chaotian Jing <[email protected]> wrote:
> Document the device-tree binding of Mediatek MMC host
>
> Signed-off-by: Chaotian Jing <[email protected]>
> ---
> Documentation/devicetree/bindings/mmc/mtk-sd.txt | 33
> ++++++++++++++++++++++++
> 1 file changed, 33 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/mmc/mtk-sd.txt
>
> diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.txt
> b/Documentation/devicetree/bindings/mmc/mtk-sd.txt
> new file mode 100644
> index 0000000..ba6d668
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mmc/mtk-sd.txt
> @@ -0,0 +1,33 @@
> +* MTK MMC controller
> +
> +The MTK MSDC can act as a MMC controller
> +to support MMC, SD, and SDIO types of memory cards.
> +
> +This file documents differences between the core properties in mmc.txt
> +and the properties used by the msdc driver.
> +
> +Required properties:
> +- compatible: Should be "mediatek,mt8173-mmc","mediatek,mt8135-mmc".
> +- interrupts: Should contain MSDC interrupt number
> +- clocks: MSDC source clock, HCLK, HCLK is mandatory when it is not
> controlled by Infra
This seems strange. Either it's mandatory since it's under the
"Required properties" section or it should be moved to the "Optional
properties" section.
> +- clock-names: "source", "hclk"
> +- pinctrl-names: should be "default", "state_uhs"
> +- pinctrl-0: should contain default/high speed pin ctrl
> +- pinctrl-1: should contain uhs mode pin ctrl
> +- vmmc-supply: power to the Core
> +
> +Optional properties:
> +- vqmmc-supply: power to the IO(for SD/SDIO)
> +
> +Examples:
> +mmc0: mmc@11230000 {
> + compatible = "mediatek,mt8173-mmc", "mediatek,mt8135-mmc";
> + reg = <0 0x11230000 0 0x108>;
> + interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_LOW>;
> + vmmc-supply = <&mt6397_vemc_3v3_reg>;
> + clocks = <&pericfg CLK_PERI_MSDC30_0>, <&topckgen
> CLK_TOP_MSDC50_0_H_SEL>;
> + clock-names = "source", "hclk";
> + pinctrl-names = "default", "state_uhs";
> + pinctrl-0 = <&mmc0_pins_default>;
> + pinctrl-1 = <&mmc0_pins_uhs>;
> +};
> --
> 1.8.1.1.dirty
>
Kind regards
Uffe
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
