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Commit 29f55cc6 authored by Eugeniy Paltsev's avatar Eugeniy Paltsev Committed by Linus Walleij
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dt-bindings: Document the Synopsys GPIO via CREG bindings 



This patch adds documentation of device tree bindings for the Synopsys
GPIO via CREG driver.

Reviewed-by: default avatarRob Herring <robh@kernel.org>
Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarEugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 3ea47b44

Documentation/devicetree/bindings/gpio/snps,creg-gpio.txt

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Synopsys GPIO via CREG (Control REGisters) driver



Required properties:

- compatible : "snps,creg-gpio-hsdk" or "snps,creg-gpio-axs10x".

- reg : Exactly one register range with length 0x4.

- #gpio-cells : Since the generic GPIO binding is used, the

  amount of cells must be specified as 2. The first cell is the

  pin number, the second cell is used to specify optional parameters:

  See "gpio-specifier" in .../devicetree/bindings/gpio/gpio.txt.

- gpio-controller : Marks the device node as a GPIO controller.

- ngpios: Number of GPIO pins.



Example:



gpio: gpio@f00014b0 {

	compatible = "snps,creg-gpio-hsdk";

	reg = <0xf00014b0 0x4>;

	gpio-controller;

	#gpio-cells = <2>;

	ngpios = <2>;

};