1*0fe5ac3dSAlexander Dahl# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2*0fe5ac3dSAlexander Dahl%YAML 1.2
3*0fe5ac3dSAlexander Dahl---
4*0fe5ac3dSAlexander Dahl$id: http://devicetree.org/schemas/leds/leds-pwm.yaml#
5*0fe5ac3dSAlexander Dahl$schema: http://devicetree.org/meta-schemas/core.yaml#
6*0fe5ac3dSAlexander Dahl
7*0fe5ac3dSAlexander Dahltitle: LEDs connected to PWM
8*0fe5ac3dSAlexander Dahl
9*0fe5ac3dSAlexander Dahlmaintainers:
10*0fe5ac3dSAlexander Dahl  - Pavel Machek <pavel@ucw.cz>
11*0fe5ac3dSAlexander Dahl
12*0fe5ac3dSAlexander Dahldescription:
13*0fe5ac3dSAlexander Dahl  Each LED is represented as a sub-node of the pwm-leds device.  Each
14*0fe5ac3dSAlexander Dahl  node's name represents the name of the corresponding LED.
15*0fe5ac3dSAlexander Dahl
16*0fe5ac3dSAlexander Dahlproperties:
17*0fe5ac3dSAlexander Dahl  compatible:
18*0fe5ac3dSAlexander Dahl    const: pwm-leds
19*0fe5ac3dSAlexander Dahl
20*0fe5ac3dSAlexander DahlpatternProperties:
21*0fe5ac3dSAlexander Dahl  "^led(-[0-9a-f]+)?$":
22*0fe5ac3dSAlexander Dahl    type: object
23*0fe5ac3dSAlexander Dahl
24*0fe5ac3dSAlexander Dahl    $ref: common.yaml#
25*0fe5ac3dSAlexander Dahl
26*0fe5ac3dSAlexander Dahl    properties:
27*0fe5ac3dSAlexander Dahl      pwms:
28*0fe5ac3dSAlexander Dahl        maxItems: 1
29*0fe5ac3dSAlexander Dahl
30*0fe5ac3dSAlexander Dahl      pwm-names: true
31*0fe5ac3dSAlexander Dahl
32*0fe5ac3dSAlexander Dahl      max-brightness:
33*0fe5ac3dSAlexander Dahl        description:
34*0fe5ac3dSAlexander Dahl          Maximum brightness possible for the LED
35*0fe5ac3dSAlexander Dahl        $ref: /schemas/types.yaml#/definitions/uint32
36*0fe5ac3dSAlexander Dahl
37*0fe5ac3dSAlexander Dahl      active-low:
38*0fe5ac3dSAlexander Dahl        description:
39*0fe5ac3dSAlexander Dahl          For PWMs where the LED is wired to supply rather than ground.
40*0fe5ac3dSAlexander Dahl        type: boolean
41*0fe5ac3dSAlexander Dahl
42*0fe5ac3dSAlexander Dahl    required:
43*0fe5ac3dSAlexander Dahl      - pwms
44*0fe5ac3dSAlexander Dahl      - max-brightness
45*0fe5ac3dSAlexander Dahl
46*0fe5ac3dSAlexander DahladditionalProperties: false
47*0fe5ac3dSAlexander Dahl
48*0fe5ac3dSAlexander Dahlexamples:
49*0fe5ac3dSAlexander Dahl  - |
50*0fe5ac3dSAlexander Dahl
51*0fe5ac3dSAlexander Dahl    #include <dt-bindings/leds/common.h>
52*0fe5ac3dSAlexander Dahl
53*0fe5ac3dSAlexander Dahl    led-controller {
54*0fe5ac3dSAlexander Dahl        compatible = "pwm-leds";
55*0fe5ac3dSAlexander Dahl
56*0fe5ac3dSAlexander Dahl        led-1 {
57*0fe5ac3dSAlexander Dahl            label = "omap4::keypad";
58*0fe5ac3dSAlexander Dahl            pwms = <&twl_pwm 0 7812500>;
59*0fe5ac3dSAlexander Dahl            max-brightness = <127>;
60*0fe5ac3dSAlexander Dahl        };
61*0fe5ac3dSAlexander Dahl
62*0fe5ac3dSAlexander Dahl        led-2 {
63*0fe5ac3dSAlexander Dahl            color = <LED_COLOR_ID_GREEN>;
64*0fe5ac3dSAlexander Dahl            function = LED_FUNCTION_CHARGING;
65*0fe5ac3dSAlexander Dahl            pwms = <&twl_pwmled 0 7812500>;
66*0fe5ac3dSAlexander Dahl            max-brightness = <255>;
67*0fe5ac3dSAlexander Dahl        };
68*0fe5ac3dSAlexander Dahl    };
69*0fe5ac3dSAlexander Dahl
70*0fe5ac3dSAlexander Dahl...
71