[PATCH 2/3] doc: dt-binding: generic onboard USB HUB

[Peter Chen]

Add dt-binding documentation for generic onboard USB HUB.

Signed-off-by: Peter Chen <peter.chen at freescale.com>
---
 .../bindings/usb/generic-onboard-hub.txt           | 28 ++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/usb/generic-onboard-hub.txt

diff --git a/Documentation/devicetree/bindings/usb/generic-onboard-hub.txt b/Documentation/devicetree/bindings/usb/generic-onboard-hub.txt
new file mode 100644
index 0000000..ea92205
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/generic-onboard-hub.txt
@@ -0,0 +1,28 @@
+Generic Onboard USB HUB
+
+Required properties:
+- compatible: should be "generic-onboard-hub"
+
+Optional properties:
+- clocks: the input clock for HUB.
+
+- clock-names: Should be "external_clk"
+
+- hub-reset-gpios: Should specify the GPIO for reset.
+
+- hub-reset-active-high: the active reset signal is high, if this property is
+  not set, the active reset signal is low.
+
+- hub-reset-duration-us: the duration for assert reset signal, the time unit
+  is microsecond.
+
+Example:
+
+	usb_hub1 {
+		compatible = "generic-onboard-hub";
+		clocks = <&clks IMX6QDL_CLK_CKO>;
+		clock-names = "external_clk";
+		hub-reset-gpios = <&gpio7 12 0>;
+		hub-reset-active-high;
+		hub-reset-duration-us = <2>;
+	};
-- 
1.9.1