Add dt-binding documentation for generic onboard USB device.
Signed-off-by: Peter Chen <[email protected]>
---
.../bindings/usb/generic-onboard-device.txt | 31 ++++++++++++++++++++++
1 file changed, 31 insertions(+)
create mode 100644
Documentation/devicetree/bindings/usb/generic-onboard-device.txt
diff --git a/Documentation/devicetree/bindings/usb/generic-onboard-device.txt
b/Documentation/devicetree/bindings/usb/generic-onboard-device.txt
new file mode 100644
index 0000000..cdb3014
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/generic-onboard-device.txt
@@ -0,0 +1,31 @@
+Generic Onboard USB Device
+
+The node should be located at USB host controller's node or
+any USB HUB's node.
+
+Required properties:
+- compatible: should be "generic-onboard-device"
+
+Optional properties:
+- clocks: the input clock for USB device.
+- clock-frequency: the frequency for device's clock.
+- reset-gpios: Should specify the GPIO for reset.
+- reset-duration-us: the duration for assert reset signal, the time unit
+ is microsecond.
+
+Example:
+
+&usbh1 {
+ vbus-supply = <®_usb_h1_vbus>;
+ status = "okay";
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+ hub: usb2415@01 {
+ compatible = "generic-onboard-device";
+ reg = <0x01>;
+ clocks = <&clks IMX6QDL_CLK_CKO>;
+ reset-gpios = <&gpio7 12 GPIO_ACTIVE_LOW>;
+ reset-duration-us = <10>;
+ };
+};
--
1.9.1
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