Phy: DT binding documentation for the Armada 375 USB cluster binding

Armada 375 comes with an USB2 host and device controller and an USB3
controller. The USB cluster control register allows to manage common
features of both USB controllers. This commit adds the Device Tree
binding documentation for this piece of hardware.

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

diff --git a/Documentation/devicetree/bindings/phy/phy-mvebu.txt b/Documentation/devicetree/bindings/phy/phy-mvebu.txt
index 6cb3364aeafbdbf8b57848bc37c3ba5b71dac20a..f95b6260a3b3d148570a06e7a5e08d9659794661 100644 (file)
--- a/Documentation/devicetree/bindings/phy/phy-mvebu.txt
+++ b/Documentation/devicetree/bindings/phy/phy-mvebu.txt
@@ -20,3 +20,24 @@ Example:
                        #phy-cells = <0>;
                        status = "ok";
                };
+
+Armada 375 USB cluster
+----------------------
+
+Armada 375 comes with an USB2 host and device controller and an USB3
+controller. The USB cluster control register allows to manage common
+features of both USB controllers.
+
+Required properties:
+
+- compatible: "marvell,armada-375-usb-cluster"
+- reg: Should contain usb cluster register location and length.
+- #phy-cells : from the generic phy bindings, must be 1. Possible
+values are 1 (USB2), 2 (USB3).
+
+Example:
+               usbcluster: usb-cluster@18400 {
+                       compatible = "marvell,armada-375-usb-cluster";
+                       reg = <0x18400 0x4>;
+                       #phy-cells = <1>
+               };