[PATCH V10 5/6] gpio: add DT binding doc for gpio of PMIC max77620/max20024

Laxman Dewangan
2016-03-30T14:40:52Z

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

---
Changes from V4:
- Separate out from gpio driver

Changes from V5/V6/V7:
- None

Changes from V8:
- Collected Linus ack.

Changes from V9:
None

.../devicetree/bindings/gpio/gpio-max77620.txt | 25 ++++++++++++++++++++++
1 file changed, 25 insertions(+)
create mode 100644 Documentation/devicetree/bindings/gpio/gpio-max77620.txt

diff --git a/Documentation/devicetree/bindings/gpio/gpio-max77620.txt b/Documentation/devicetree/bindings/gpio/gpio-max77620.txt
new file mode 100644
index 0000000..410e716
--- /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>;
+};
--
2.1.4