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Commit 38ed0187 authored by Harini Katakam's avatar Harini Katakam Committed by Linus Walleij
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devicetree: Add Zynq GPIO devicetree bindings documentation 



Add gpio-zynq bindings documentation.

Signed-off-by: default avatarHarini Katakam <harinik@xilinx.com>
Signed-off-by: default avatarSoren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 3242ba11

Documentation/devicetree/bindings/gpio/gpio-zynq.txt

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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>;

	};