diff options
Diffstat (limited to 'Documentation/devicetree')
| -rw-r--r-- | Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt b/Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt new file mode 100644 index 00000000000..d7e272671c7 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt @@ -0,0 +1,34 @@ +USB NOP PHY + +Required properties: +- compatible: should be usb-nop-xceiv + +Optional properties: +- clocks: phandle to the PHY clock. Use as per Documentation/devicetree + /bindings/clock/clock-bindings.txt + This property is required if clock-frequency is specified. + +- clock-names: Should be "main_clk" + +- clock-frequency: the clock frequency (in Hz) that the PHY clock must + be configured to. + +- vcc-supply: phandle to the regulator that provides RESET to the PHY. + +- reset-supply: phandle to the regulator that provides power to the PHY. + +Example: + + hsusb1_phy { + compatible = "usb-nop-xceiv"; + clock-frequency = <19200000>; + clocks = <&osc 0>; + clock-names = "main_clk"; + vcc-supply = <&hsusb1_vcc_regulator>; + reset-supply = <&hsusb1_reset_regulator>; + }; + +hsusb1_phy is a NOP USB PHY device that gets its clock from an oscillator +and expects that clock to be configured to 19.2MHz by the NOP PHY driver. +hsusb1_vcc_regulator provides power to the PHY and hsusb1_reset_regulator +controls RESET. |