[PATCH v5 2/3] clk: meson: add DT documentation for emmc clock controller

Stephen Boyd sboyd at kernel.org
Thu Oct 18 10:08:05 PDT 2018


Quoting Jianxin Pan (2018-10-17 22:07:24)
> diff --git a/Documentation/devicetree/bindings/clock/amlogic,mmc-clkc.txt b/Documentation/devicetree/bindings/clock/amlogic,mmc-clkc.txt
> new file mode 100644
> index 0000000..9e6d343
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/amlogic,mmc-clkc.txt
> @@ -0,0 +1,31 @@
> +* Amlogic MMC Sub Clock Controller Driver
> +
> +The Amlogic MMC clock controller generates and supplies clock to support
> +MMC and NAND controller
> +
> +Required Properties:
> +
> +- compatible: should be:
> +               "amlogic,gx-mmc-clkc"
> +               "amlogic,axg-mmc-clkc"
> +
> +- #clock-cells: should be 1.
> +- clocks: phandles to clocks corresponding to the clock-names property
> +- clock-names: list of parent clock names
> +       - "clkin0", "clkin1"
> +
> +Parent node should have the following properties :

The example only has one node. Can you add two nodes?

> +- compatible: "amlogic,axg-mmc-clkc", "syscon".
> +- reg: base address and size of the MMC control register space.
> +
> +Example: Clock controller node:
> +
> +sd_mmc_c_clkc: clock-controller at 7000 {
> +       compatible = "amlogic,axg-mmc-clkc", "syscon";
> +       reg = <0x0 0x7000 0x0 0x4>;
> +       #clock-cells = <1>;
> +
> +       clock-names = "clkin0", "clkin1";
> +       clocks = <&clkc CLKID_SD_MMC_C_CLK0>,
> +                <&clkc CLKID_FCLK_DIV2>;
> +};



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