xref: /openbmc/linux/Documentation/devicetree/bindings/leds/awinic,aw200xx.yaml (revision e338a05e)

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/leds/awinic,aw200xx.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: AWINIC AW200XX LED

maintainers:
  - Martin Kurbanov <mmkurbanov@sberdevices.ru>

description: |
  This controller is present on AW20036/AW20054/AW20072.
  It is a 3x12/6x9/6x12 matrix LED programmed via
  an I2C interface, up to 36/54/72 LEDs or 12/18/24 RGBs,
  3 pattern controllers for auto breathing or group dimming control.

  For more product information please see the link below:
  aw20036 - https://www.awinic.com/en/productDetail/AW20036QNR#tech-docs
  aw20054 - https://www.awinic.com/en/productDetail/AW20054QNR#tech-docs
  aw20072 - https://www.awinic.com/en/productDetail/AW20072QNR#tech-docs

properties:
  compatible:
    enum:
      - awinic,aw20036
      - awinic,aw20054
      - awinic,aw20072

  reg:
    maxItems: 1

  "#address-cells":
    const: 1

  "#size-cells":
    const: 0

  awinic,display-rows:
    $ref: /schemas/types.yaml#/definitions/uint32
    description:
      Leds matrix size

patternProperties:
  "^led@[0-9a-f]$":
    type: object
    $ref: common.yaml#
    unevaluatedProperties: false

    properties:
      reg:
        description:
          LED number
        maxItems: 1

      led-max-microamp:
        default: 9780
        description: |
          Note that a driver will take the minimum of all LED limits
          since the chip has a single global setting.
          The maximum output current of each LED is calculated by the
          following formula:
            IMAXled = 160000 * (592 / 600.5) * (1 / display-rows)
          And the minimum output current formula:
            IMINled = 3300 * (592 / 600.5) * (1 / display-rows)

required:
  - compatible
  - reg
  - "#address-cells"
  - "#size-cells"
  - awinic,display-rows

allOf:
  - if:
      properties:
        compatible:
          contains:
            const: awinic,aw20036
    then:
      properties:
        awinic,display-rows:
          enum: [1, 2, 3]
    else:
      properties:
        awinic,display-rows:
          enum: [1, 2, 3, 4, 5, 6, 7]

additionalProperties: false

examples:
  - |
    #include <dt-bindings/leds/common.h>

    i2c {
        #address-cells = <1>;
        #size-cells = <0>;

        led-controller@3a {
            compatible = "awinic,aw20036";
            reg = <0x3a>;
            #address-cells = <1>;
            #size-cells = <0>;
            awinic,display-rows = <3>;

            led@0 {
                reg = <0x0>;
                color = <LED_COLOR_ID_RED>;
                led-max-microamp = <9780>;
            };

            led@1 {
                reg = <0x1>;
                color = <LED_COLOR_ID_GREEN>;
                led-max-microamp = <9780>;
            };

            led@2 {
                reg = <0x2>;
                color = <LED_COLOR_ID_BLUE>;
                led-max-microamp = <9780>;
            };
        };
    };

...