From 0eba387973f521e57f00584e5e840e5328a61dda Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Tue, 12 Mar 2013 13:24:25 +0200 Subject: usb: phy: nop: Add device tree support and binding information The PHY clock, clock rate, VCC regulator and RESET regulator can now be provided via device tree. Signed-off-by: Roger Quadros Signed-off-by: Felipe Balbi --- .../devicetree/bindings/usb/usb-nop-xceiv.txt | 34 ++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt (limited to 'Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt') 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 000000000000..d7e272671c7e --- /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. -- cgit v1.2.3