# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id:
http://devicetree.org/schemas/leds/leds-pwm.yaml#
$schema:
http://devicetree.org/meta-schemas/core.yaml#
title: LEDs connected to PWM
maintainers:
- Pavel Machek <pavel@ucw.cz>
description:
Each LED is represented as a sub-node of the pwm-leds device. Each
node's name represents the name of the corresponding LED.
properties:
compatible:
const: pwm-leds
patternProperties:
"^led(-[0-9a-f]+)?$":
type: object
$ref: common.yaml#
unevaluatedProperties: false
properties:
pwms:
maxItems: 1
pwm-names: true
max-brightness:
description:
Maximum brightness possible for the LED
$ref: /schemas/types.yaml#/definitions/uint32
default-brightness:
description:
Brightness to be set if LED's default state is on. Used only during
initialization. If the option is not set then max brightness is used.
$ref: /schemas/types.yaml#/definitions/uint32
required:
- pwms
- max-brightness
additionalProperties: false
examples:
- |
#include <dt-bindings/leds/common.h>
led-controller {
compatible = "pwm-leds";
led-1 {
label = "omap4::keypad";
pwms = <&twl_pwm 0 7812500>;
max-brightness = <127>;
};
led-2 {
color = <LED_COLOR_ID_GREEN>;
function = LED_FUNCTION_CHARGING;
pwms = <&twl_pwmled 0 7812500>;
max-brightness = <255>;
};
};
...
