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Commit 35b21b6e authored by Linus Walleij's avatar Linus Walleij
Browse files

gpio: Add DT bindings for Gateworks PLD GPIO 



This adds device tree bindings for the Gateworks PLD
GPIO chip, a simple I2C GPIO controller.

Cc: devicetree@vger.kernel.org
Cc: Imre Kaloz <kaloz@openwrt.org>
Cc: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 001aca0d

Documentation/devicetree/bindings/gpio/gateworks,pld-gpio.txt

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Original line number Diff line number Diff line 
Gateworks PLD GPIO controller bindings



The GPIO controller should be a child node on an I2C bus,

see: i2c/i2c.txt for details.



Required properties:

- compatible: Should be "gateworks,pld-gpio"

- reg: I2C slave address

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

- #gpio-cells: Should be <2>. The first cell is the gpio number and

  the second cell is used to specify optional parameters.



Example:



pld@56 {

	compatible = "gateworks,pld-gpio";

	reg = <0x56>;

	gpio-controller;

	#gpio-cells = <2>;

};