Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / usb / keystone-phy.txt

diff --git a/kernel/Documentation/devicetree/bindings/usb/keystone-phy.txt b/kernel/Documentation/devicetree/bindings/usb/keystone-phy.txt
new file mode 100644 (file)
index 0000000..f37b3a8
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/usb/keystone-phy.txt
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+TI Keystone USB PHY
+
+Required properties:
+ - compatible: should be "ti,keystone-usbphy".
+ - #address-cells, #size-cells : should be '1' if the device has sub-nodes
+   with 'reg' property.
+ - reg : Address and length of the usb phy control register set.
+
+The main purpose of this PHY driver is to enable the USB PHY reference clock
+gate on the Keystone SOC for both the USB2 and USB3 PHY. Otherwise it is just
+an NOP PHY driver.  Hence this node is referenced as both the usb2 and usb3
+phy node in the USB Glue layer driver node.
+
+usb_phy: usb_phy@2620738 {
+       compatible = "ti,keystone-usbphy";
+       #address-cells = <1>;
+       #size-cells = <1>;
+       reg = <0x2620738 32>;
+       status = "disabled";
+};