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LEDs connected to PWM (Linux compatible)
Required properties:
- compatible : should be "pwm-leds".
Each LED is represented as a sub-node of the pwm-leds device. Each
node's name represents the name of the corresponding LED.
LED sub-node properties:
- pwms : (required) LED pwm channel, see "pwms property" in
doc/device-tree-bindings/pwm/pwm.txt
- label : (optional) LED label, see "label property" in
doc/device-tree-bindings/led/common.txt
- max-brightness : (optional, unsigned, default 255) Maximum brightness possible
for the LED
- active-low : (optional, boolean, default false) For PWMs where the LED is
wired to supply rather than ground
- u-boot,default-brightness : (optional, unsigned, default 0) Initial state
of pwm-leds
Example:
leds {
compatible = "pwm-leds";
status = "okay";
blue {
label = "led-blue";
pwms = <&pwm1 0 100000 0>;
max-brightness = <255>;
u-boot,default-brightness = <127>;
};
green {
label = "led-green";
pwms = <&pwm2 0 100000 0>;
max-brightness = <255>;
u-boot,default-brightness = <127>;
};
red {
label = "led-red";
pwms = <&pwm3 0 100000 0>;
max-brightness = <255>;
u-boot,default-brightness = <127>;
};
}
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