xref: /freebsd/sys/contrib/device-tree/Bindings/gpio/gpio-lp3943.txt (revision 2e3507c25e42292b45a5482e116d278f5515d04d)
1TI/National Semiconductor LP3943 GPIO controller
2
3Required properties:
4  - compatible: "ti,lp3943-gpio"
5  - gpio-controller: Marks the device node as a GPIO controller.
6  - #gpio-cells: Should be 2. See gpio.txt in this directory for a
7                 description of the cells format.
8
9Example:
10Simple LED controls with LP3943 GPIO controller
11
12&i2c4 {
13	lp3943@60 {
14		compatible = "ti,lp3943";
15		reg = <0x60>;
16
17		gpioex: gpio {
18			compatible = "ti,lp3943-gpio";
19			gpio-controller;
20			#gpio-cells = <2>;
21		};
22	};
23};
24
25leds {
26	compatible = "gpio-leds";
27	indicator1 {
28		label = "indi1";
29		gpios = <&gpioex 9 GPIO_ACTIVE_LOW>;
30	};
31
32	indicator2 {
33		label = "indi2";
34		gpios = <&gpioex 10 GPIO_ACTIVE_LOW>;
35		default-state = "off";
36	};
37};
38