From: Laxman Dewangan <ldewangan@nvidia.com>
Date: Fri, 13 May 2016 05:19:12 +0000 (+0530)
Subject: gpio: add DT binding doc for gpio of PMIC max77620/max20024
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=f72677939cf582118bd645c5015605577db74b25;p=deliverable%2Flinux.git

gpio: add DT binding doc for gpio of PMIC max77620/max20024

Maxim Semiconductor's PMIC MAX77620/MAX20024 has 8 GPIO pins
which act as GPIO as well as special function mode.

Add DT binding document to support these pins in GPIO
mode via GPIO framework.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---

diff --git a/Documentation/devicetree/bindings/gpio/gpio-max77620.txt b/Documentation/devicetree/bindings/gpio/gpio-max77620.txt
new file mode 100644
index 000000000000..410e716fd3d2
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio-max77620.txt
@@ -0,0 +1,25 @@
+GPIO driver for MAX77620 Power management IC from Maxim Semiconductor.
+
+Device has 8 GPIO pins which can be configured as GPIO as well as the
+special IO functions.
+
+Required properties:
+-------------------
+- gpio-controller : 	Marks the device node as a gpio controller.
+- #gpio-cells : 	Should be two.  The first cell is the pin number and
+			the second cell is used to specify the gpio polarity:
+				0 = active high
+				1 = active low
+For more details, please refer generic GPIO DT binding document
+<devicetree/bindings/gpio/gpio.txt>.
+
+Example:
+--------
+#include <dt-bindings/mfd/max77620.h>
+...
+max77620@3c {
+	compatible = "maxim,max77620";
+
+	gpio-controller;
+	#gpio-cells = <2>;
+};