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Add Awinic AW99706 backlight binding documentation. Signed-off-by: Junjie Cao <caojunjie650@gmail.com> Reviewed-by: Daniel Thompson (RISCstar) <danielt@kernel.org> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://patch.msgid.link/20251109032240.3422503-2-caojunjie650@gmail.com Signed-off-by: Lee Jones <lee@kernel.org>
102 lines
2.5 KiB
YAML
102 lines
2.5 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/leds/backlight/awinic,aw99706.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Awinic AW99706 6-channel WLED Backlight Driver
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maintainers:
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- Junjie Cao <caojunjie650@gmail.com>
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allOf:
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- $ref: common.yaml#
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properties:
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compatible:
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const: awinic,aw99706
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reg:
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maxItems: 1
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enable-gpios:
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description: GPIO to use to enable/disable the backlight (HWEN pin).
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maxItems: 1
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awinic,dim-mode:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: >
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Select dimming mode of the device.
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0 = Bypass mode.
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1 = DC mode.
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2 = MIX mode(PWM at low brightness and DC at high brightness).
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3 = MIX-26k mode(MIX mode with different PWM frequency).
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enum: [ 0, 1, 2, 3 ]
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default: 1
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awinic,sw-freq-hz:
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description: Boost switching frequency in Hz.
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enum: [ 300000, 400000, 500000, 600000, 660000, 750000, 850000, 1000000,
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1200000, 1330000, 1500000, 1700000 ]
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default: 750000
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awinic,sw-ilmt-microamp:
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description: Switching current limitation in uA.
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enum: [ 1500000, 2000000, 2500000, 3000000 ]
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default: 3000000
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awinic,iled-max-microamp:
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description: Maximum LED current setting in uA.
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minimum: 5000
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maximum: 50000
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multipleOf: 500
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default: 20000
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awinic,uvlo-thres-microvolt:
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description: UVLO(Under Voltage Lock Out) in uV.
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enum: [ 2200000, 5000000 ]
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default: 2200000
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awinic,ramp-ctl:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: >
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Select ramp control and filter of the device.
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0 = Fade in/fade out.
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1 = Light filter.
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2 = Medium filter.
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3 = Heavy filter.
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enum: [ 0, 1, 2, 3 ]
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default: 2
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required:
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- compatible
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- reg
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- enable-gpios
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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backlight@76 {
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compatible = "awinic,aw99706";
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reg = <0x76>;
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enable-gpios = <&tlmm 88 GPIO_ACTIVE_HIGH>;
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default-brightness = <2047>;
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max-brightness = <4095>;
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awinic,dim-mode = <1>;
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awinic,sw-freq-hz = <750000>;
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awinic,sw-ilmt-microamp = <3000000>;
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awinic,uvlo-thres-microvolt = <2200000>;
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awinic,iled-max-microamp = <20000>;
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awinic,ramp-ctl = <2>;
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};
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};
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...
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