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067cfc1c2e
Add a driver which allows to use of LEDs connected to PWM (Linux compatible). MAINTAINERS: add i.vozvakhov as a maintainer of leds-pwm C(required during new functionality adding). Signed-off-by: Ivan Vozvakhov <i.vozvakhov@corp.mail.ru>
47 lines
1.3 KiB
Text
47 lines
1.3 KiB
Text
LEDs connected to PWM (Linux compatible)
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Required properties:
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- compatible : should be "pwm-leds".
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Each LED is represented as a sub-node of the pwm-leds device. Each
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node's name represents the name of the corresponding LED.
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LED sub-node properties:
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- pwms : (required) LED pwm channel, see "pwms property" in
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doc/device-tree-bindings/pwm/pwm.txt
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- label : (optional) LED label, see "label property" in
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doc/device-tree-bindings/led/common.txt
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- max-brightness : (optional, unsigned, default 255) Maximum brightness possible
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for the LED
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- active-low : (optional, boolean, default false) For PWMs where the LED is
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wired to supply rather than ground
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- u-boot,default-brightness : (optional, unsigned, default 0) Initial state
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of pwm-leds
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Example:
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leds {
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compatible = "pwm-leds";
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status = "okay";
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blue {
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label = "led-blue";
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pwms = <&pwm1 0 100000 0>;
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max-brightness = <255>;
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u-boot,default-brightness = <127>;
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};
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green {
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label = "led-green";
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pwms = <&pwm2 0 100000 0>;
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max-brightness = <255>;
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u-boot,default-brightness = <127>;
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};
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red {
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label = "led-red";
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pwms = <&pwm3 0 100000 0>;
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max-brightness = <255>;
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u-boot,default-brightness = <127>;
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};
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}
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