From: Harini Katakam <harini.katakam@xxxxxxxxxx>
Add gpio-zynq bindings documentation.
Signed-off-by: Harini Katakam <harinik@xxxxxxxxxx>
Signed-off-by: Soren Brinkmann <soren.brinkmann@xxxxxxxxxx>
---
v2 changes:
Improve description.
---
.../devicetree/bindings/gpio/gpio-zynq.txt | 24 ++++++++++++++++++++
1 file changed, 24 insertions(+)
create mode 100644 Documentation/devicetree/bindings/gpio/gpio-zynq.txt
diff --git a/Documentation/devicetree/bindings/gpio/gpio-zynq.txt b/Documentation/devicetree/bindings/gpio/gpio-zynq.txt
new file mode 100644
index 0000000..b2c023a
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio-zynq.txt
@@ -0,0 +1,24 @@
+Xilinx Zynq GPIO controller Device Tree Bindings
+-------------------------------------------
+
+Required properties:
+- #gpio-cells : Should be two. First cell is used to mention
+ pin number.
+- compatible : Should be "xlnx,zynq-gpio-1.0"
+- clocks : Clock specifier (see clock bindings for details)
+- gpio-controller : Marks the device node as a GPIO controller.
+- interrupts : Interrupt specifier (see interrupt bindings for
+ details)
+- interrupt-parent : Must be core interrupt controller
+- reg : Address and length of the register set for the device
+
+Example:
+ gpio@e000a000 {
+ #gpio-cells = <2>;
+ compatible = "xlnx,zynq-gpio-1.0";
+ clocks = <&clkc 42>;
+ gpio-controller;
+ interrupt-parent = <&intc>;
+ interrupts = <0 20 4>;
+ reg = <0xe000a000 0x1000>;
+ };
--
1.7.9.5
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