awinic,aw99706.yaml

  1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
  2%YAML 1.2
  3---
  4$id: http://devicetree.org/schemas/leds/backlight/awinic,aw99706.yaml#
  5$schema: http://devicetree.org/meta-schemas/core.yaml#
  6
  7title: Awinic AW99706 6-channel WLED Backlight Driver
  8
  9maintainers:
 10  - Junjie Cao <caojunjie650@gmail.com>
 11
 12allOf:
 13  - $ref: common.yaml#
 14
 15properties:
 16  compatible:
 17    const: awinic,aw99706
 18
 19  reg:
 20    maxItems: 1
 21
 22  enable-gpios:
 23    description: GPIO to use to enable/disable the backlight (HWEN pin).
 24    maxItems: 1
 25
 26  awinic,dim-mode:
 27    $ref: /schemas/types.yaml#/definitions/uint32
 28    description: >
 29      Select dimming mode of the device.
 30        0 = Bypass mode.
 31        1 = DC mode.
 32        2 = MIX mode(PWM at low brightness and DC at high brightness).
 33        3 = MIX-26k mode(MIX mode with different PWM frequency).
 34    enum: [ 0, 1, 2, 3 ]
 35    default: 1
 36
 37  awinic,sw-freq-hz:
 38    description: Boost switching frequency in Hz.
 39    enum: [ 300000, 400000, 500000, 600000, 660000, 750000, 850000, 1000000,
 40            1200000, 1330000, 1500000, 1700000 ]
 41    default: 750000
 42
 43  awinic,sw-ilmt-microamp:
 44    description: Switching current limitation in uA.
 45    enum: [ 1500000, 2000000, 2500000, 3000000 ]
 46    default: 3000000
 47
 48  awinic,iled-max-microamp:
 49    description: Maximum LED current setting in uA.
 50    minimum: 5000
 51    maximum: 50000
 52    multipleOf: 500
 53    default: 20000
 54
 55  awinic,uvlo-thres-microvolt:
 56    description: UVLO(Under Voltage Lock Out) in uV.
 57    enum: [ 2200000, 5000000 ]
 58    default: 2200000
 59
 60  awinic,ramp-ctl:
 61    $ref: /schemas/types.yaml#/definitions/uint32
 62    description: >
 63      Select ramp control and filter of the device.
 64        0 = Fade in/fade out.
 65        1 = Light filter.
 66        2 = Medium filter.
 67        3 = Heavy filter.
 68    enum: [ 0, 1, 2, 3 ]
 69    default: 2
 70
 71required:
 72  - compatible
 73  - reg
 74  - enable-gpios
 75
 76unevaluatedProperties: false
 77
 78examples:
 79  - |
 80    #include <dt-bindings/gpio/gpio.h>
 81
 82    i2c {
 83        #address-cells = <1>;
 84        #size-cells = <0>;
 85
 86        backlight@76 {
 87            compatible = "awinic,aw99706";
 88            reg = <0x76>;
 89            enable-gpios = <&tlmm 88 GPIO_ACTIVE_HIGH>;
 90            default-brightness = <2047>;
 91            max-brightness = <4095>;
 92            awinic,dim-mode = <1>;
 93            awinic,sw-freq-hz = <750000>;
 94            awinic,sw-ilmt-microamp = <3000000>;
 95            awinic,uvlo-thres-microvolt = <2200000>;
 96            awinic,iled-max-microamp = <20000>;
 97            awinic,ramp-ctl = <2>;
 98        };
 99    };
100
101...