gpio-leds
Vendor: Generic or vendor-independent
Description
This allows you to define a group of LEDs. Each LED in the group is
controlled by a GPIO. Each LED is defined in a child node of the
gpio-leds node.
Here is an example which defines three LEDs in the node /leds:
/ {
leds {
compatible = "gpio-leds";
led_0 {
gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
};
led_1 {
gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>;
};
led_2 {
gpios = <&gpio1 15 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
};
};
};
Above:
- led_0 is pin 1 on gpio0. The LED is on when the pin is low,
and off when the pin is high.
- led_1 is pin 2 on gpio0. The LED is on when the pin is high,
and off when it is low.
- led_2 is pin 15 on gpio1. The LED is on when the pin is low,
and the pin's internal pull-up resistor should be enabled.
Properties
Top level properties
No top-level properties.
Child node properties
Name |
Type |
Details |
|---|---|---|
|
|
This property is required. |
|
|
Human readable string describing the LED. It can be used by an
application to identify this LED or to retrieve its number/index
(i.e. child node number) on the parent device.
See Important properties for more information. |