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authorHarini Katakam <harini.katakam@xilinx.com>2014-07-08 16:32:36 +0530
committerLinus Walleij <linus.walleij@linaro.org>2014-07-10 11:13:44 +0200
commit38ed0187d2da7f219f9f84d8921b5c95b266b34b (patch)
treebc68af26d30508dcbbb1847d27dbfdde2b5cca4d /Documentation
parent3242ba117e9bd29eb748afd6f6fbfbd6dd7cfe52 (diff)
devicetree: Add Zynq GPIO devicetree bindings documentation
Add gpio-zynq bindings documentation. Signed-off-by: Harini Katakam <harinik@xilinx.com> Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/gpio/gpio-zynq.txt26
1 files changed, 26 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/gpio-zynq.txt b/Documentation/devicetree/bindings/gpio/gpio-zynq.txt
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index 000000000000..986371a4be2c
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+++ b/Documentation/devicetree/bindings/gpio/gpio-zynq.txt
@@ -0,0 +1,26 @@
+Xilinx Zynq GPIO controller Device Tree Bindings
+-------------------------------------------
+
+Required properties:
+- #gpio-cells : Should be two
+ - First cell is the GPIO line number
+ - Second cell is used to specify optional
+ parameters (unused)
+- 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>;
+ };