[RFC PATCH 2/5] doc: dt-binding: generic onboard USB device

[Peter Chen]

Add dt-binding documentation for generic onboard USB device.

Signed-off-by: Peter Chen <peter.c...@freescale.com>
---
 .../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 = <&reg_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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