summaryrefslogtreecommitdiff
path: root/Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt
blob: d7e272671c7e42819c35fc0583d3744aaecd74d9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
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.