1 GPIO driver for MAX77620 Power management IC f 1 GPIO driver for MAX77620 Power management IC from Maxim Semiconductor.
2 2
3 Device has 8 GPIO pins which can be configured 3 Device has 8 GPIO pins which can be configured as GPIO as well as the
4 special IO functions. 4 special IO functions.
5 5
6 Required properties: 6 Required properties:
7 ------------------- 7 -------------------
8 - gpio-controller : Marks the device node 8 - gpio-controller : Marks the device node as a gpio controller.
9 - #gpio-cells : Should be two. The fi 9 - #gpio-cells : Should be two. The first cell is the pin number and
10 the second cell is use 10 the second cell is used to specify the gpio polarity:
11 0 = active hig 11 0 = active high
12 1 = active low 12 1 = active low
13 For more details, please refer generic GPIO DT 13 For more details, please refer generic GPIO DT binding document
14 <devicetree/bindings/gpio/gpio.txt>. 14 <devicetree/bindings/gpio/gpio.txt>.
15 15
16 Example: 16 Example:
17 -------- 17 --------
18 #include <dt-bindings/mfd/max77620.h> 18 #include <dt-bindings/mfd/max77620.h>
19 ... 19 ...
20 max77620@3c { 20 max77620@3c {
21 compatible = "maxim,max77620"; 21 compatible = "maxim,max77620";
22 22
23 gpio-controller; 23 gpio-controller;
24 #gpio-cells = <2>; 24 #gpio-cells = <2>;
25 }; 25 };
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