leds-pwm.yaml

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

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/leds/leds-pwm.yaml

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/leds/leds-pwm.yaml