From: Linus Walleij <linus.walleij@linaro.org>
Date: Wed, 30 Jan 2019 20:31:55 +0000 (+0100)
Subject: gpio: Add DT bindings for Gateworks PLD GPIO
X-Git-Tag: v5.15~6842^2~41
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=35b21b6ef888e69c42d7dc93bc360084d31e95f4;p=platform%2Fkernel%2Flinux-starfive.git

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: Linus Walleij <linus.walleij@linaro.org>
---

diff --git a/Documentation/devicetree/bindings/gpio/gateworks,pld-gpio.txt b/Documentation/devicetree/bindings/gpio/gateworks,pld-gpio.txt
new file mode 100644
index 0000000..6e81f8b
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gateworks,pld-gpio.txt
@@ -0,0 +1,20 @@
+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>;
+};