Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt

   1 Rockchip EMMC PHY
   2 -----------------------
   3
   4 Required properties:
   5  - compatible: rockchip,rk3399-emmc-phy
   6  - #phy-cells: must be 0
   7  - reg: PHY register address offset and length in "general
   8    register files"
   9
  10 Optional clocks using the clock bindings (see ../clock/clock-bindings.txt),
  11 specified by name:
  12  - clock-names: Should contain "emmcclk".  Although this is listed as optional
  13                 (because most boards can get basic functionality without having
  14                 access to it), it is strongly suggested.
  15  - clocks: Should have a phandle to the card clock exported by the SDHCI driver.
  16
  17 Example:
  18
  19
  20 grf: syscon@ff770000 {
  21         compatible = "rockchip,rk3399-grf", "syscon", "simple-mfd";
  22         #address-cells = <1>;
  23         #size-cells = <1>;
  24
  25 ...
  26
  27         emmcphy: phy@f780 {
  28                 compatible = "rockchip,rk3399-emmc-phy";
  29                 reg = <0xf780 0x20>;
  30                 clocks = <&sdhci>;
  31                 clock-names = "emmcclk";
  32                 #phy-cells = <0>;
  33         };
  34 };