ARM: Orion: DT support for IRQ and GPIO Controllers

[cascardo/linux.git] / Documentation / devicetree / bindings / gpio / mrvl-gpio.txt

diff --git a/Documentation/devicetree/bindings/gpio/mrvl-gpio.txt b/Documentation/devicetree/bindings/gpio/mrvl-gpio.txt
index 05428f3..e137874 100644 (file)
--- a/Documentation/devicetree/bindings/gpio/mrvl-gpio.txt
+++ b/Documentation/devicetree/bindings/gpio/mrvl-gpio.txt
@@ -27,3 +27,26 @@ Example:
                interrupt-controller;
                #interrupt-cells = <1>;
       };
+
+* Marvell Orion GPIO Controller
+
+Required properties:
+- compatible         : Should be "marvell,orion-gpio"
+- reg                : Address and length of the register set for controller.
+- gpio-controller    : So we know this is a gpio controller.
+- ngpio              : How many gpios this controller has.
+- interrupts        : Up to 4 Interrupts for the controller.
+
+Optional properties:
+- mask-offset        : For SMP Orions, offset for Nth CPU
+
+Example:
+
+               gpio0: gpio@10100 {
+                       compatible = "marvell,orion-gpio";
+                       #gpio-cells = <2>;
+                       gpio-controller;
+                       reg = <0x10100 0x40>;
+                       ngpio = <32>;
+                       interrupts = <35>, <36>, <37>, <38>;
+               };