linux/Documentation/devicetree/bindings/usb/nvidia,tegra20-usb-phy.txt
<<
>>
Prefs
   1Tegra SOC USB PHY
   2
   3The device node for Tegra SOC USB PHY:
   4
   5Required properties :
   6 - compatible : Should be "nvidia,tegra20-usb-phy".
   7 - reg : Address and length of the register set for the USB PHY interface.
   8 - phy_type : Should be one of "ulpi" or "utmi".
   9
  10Required properties for phy_type == ulpi:
  11  - nvidia,phy-reset-gpio : The GPIO used to reset the PHY.
  12
  13Optional properties:
  14  - nvidia,has-legacy-mode : boolean indicates whether this controller can
  15    operate in legacy mode (as APX 2500 / 2600). In legacy mode some
  16    registers are accessed through the APB_MISC base address instead of
  17    the USB controller.