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authorRoger Quadros <rogerq@ti.com>2013-03-12 12:24:25 +0100
committerFelipe Balbi <balbi@ti.com>2013-03-18 10:15:12 +0100
commit0eba387973f521e57f00584e5e840e5328a61dda (patch)
treeea216d8038e2982dd79c8cc3b34cf9db116ed129 /Documentation/devicetree
parentusb: phy: nop: use new PHY API to register PHY (diff)
downloadlinux-0eba387973f521e57f00584e5e840e5328a61dda.tar.xz
linux-0eba387973f521e57f00584e5e840e5328a61dda.zip
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 <rogerq@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt34
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
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index 000000000000..d7e272671c7e
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+++ 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.