FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/phy/rockchip-usb-phy.txt

     ROCKCHIP USB2 PHY
     
     Required properties:
      - compatible: matching the soc type, one of
          "rockchip,rk3066a-usb-phy"
          "rockchip,rk3188-usb-phy"
          "rockchip,rk3288-usb-phy"
      - #address-cells: should be 1
      - #size-cells: should be 0
    
    Deprecated properties:
     - rockchip,grf : phandle to the syscon managing the "general
       register files" - phy should be a child of the GRF instead
    
    Sub-nodes:
    Each PHY should be represented as a sub-node.
    
    Sub-nodes
    required properties:
    - #phy-cells: should be 0
    - reg: PHY configure reg address offset in GRF
                    "0x320" - for PHY attach to OTG controller
                    "0x334" - for PHY attach to HOST0 controller
                    "0x348" - for PHY attach to HOST1 controller
    
    Optional Properties:
    - clocks : phandle + clock specifier for the phy clocks
    - clock-names: string, clock name, must be "phyclk"
    - #clock-cells: for users of the phy-pll, should be 0
    - reset-names: Only allow the following entries:
     - phy-reset
    - resets: Must contain an entry for each entry in reset-names.
    - vbus-supply: power-supply phandle for vbus power source
    
    Example:
    
    grf: syscon@ff770000 {
            compatible = "rockchip,rk3288-grf", "syscon", "simple-mfd";
    
    ...
    
            usbphy: phy {
                    compatible = "rockchip,rk3288-usb-phy";
                    #address-cells = <1>;
                    #size-cells = <0>;
    
                    usbphy0: usb-phy0 {
                            #phy-cells = <0>;
                            reg = <0x320>;
                    };
            };
    };

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