gpio: msm: Add device tree and irqdomain support for gpio-msm-v2

[karo-tx-linux.git] / Documentation / devicetree / bindings / gpio / gpio-msm.txt

diff --git a/Documentation/devicetree/bindings/gpio/gpio-msm.txt b/Documentation/devicetree/bindings/gpio/gpio-msm.txt
new file mode 100644 (file)
index 0000000..ac20e68
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio-msm.txt
@@ -0,0 +1,26 @@
+MSM GPIO controller bindings
+
+Required properties:
+- compatible:
+  - "qcom,msm-gpio" for MSM controllers
+- #gpio-cells : Should be two.
+  - first cell is the pin number
+  - second cell is used to specify optional parameters (unused)
+- gpio-controller : Marks the device node as a GPIO controller.
+- #interrupt-cells : Should be 2.
+- interrupt-controller: Mark the device node as an interrupt controller
+- interrupts : Specify the TLMM summary interrupt number
+- ngpio : Specify the number of MSM GPIOs
+
+Example:
+
+       msmgpio: gpio@fd510000 {
+               compatible = "qcom,msm-gpio";
+               gpio-controller;
+               #gpio-cells = <2>;
+               interrupt-controller;
+               #interrupt-cells = <2>;
+               reg = <0xfd510000 0x4000>;
+               interrupts = <0 208 0>;
+               ngpio = <150>;
+       };