Documentation/devicetree/bindings/phy/uniphier-usb2-phy.txt

   1 Socionext UniPhier USB2 PHY
   2
   3 This describes the devicetree bindings for PHY interface built into
   4 USB2 controller implemented on Socionext UniPhier SoCs.
   5
   6 Pro4 SoC has both USB2 and USB3 host controllers, however, this USB3
   7 controller doesn't include its own High-Speed PHY. This needs to specify
   8 USB2 PHY instead of USB3 HS-PHY.
   9
  10 Required properties:
  11 - compatible: Should contain one of the following:
  12     "socionext,uniphier-pro4-usb2-phy" - for Pro4 SoC
  13     "socionext,uniphier-ld11-usb2-phy" - for LD11 SoC
  14
  15 Sub-nodes:
  16 Each PHY should be represented as a sub-node.
  17
  18 Sub-nodes required properties:
  19 - #phy-cells: Should be 0.
  20 - reg: The number of the PHY.
  21
  22 Sub-nodes optional properties:
  23 - vbus-supply: A phandle to the regulator for USB VBUS.
  24
  25 Refer to phy/phy-bindings.txt for the generic PHY binding properties.
  26
  27 Example:
  28         soc-glue@5f800000 {
  29                 ...
  30                 usb-phy {
  31                         compatible = "socionext,uniphier-ld11-usb2-phy";
  32                         usb_phy0: phy@0 {
  33                                 reg = <0>;
  34                                 #phy-cells = <0>;
  35                         };
  36                         ...
  37                 };
  38         };
  39
  40         usb@5a800100 {
  41                 compatible = "socionext,uniphier-ehci", "generic-ehci";
  42                 ...
  43                 phy-names = "usb";
  44                 phys = <&usb_phy0>;
  45         };