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62 lines
1.5 KiB
62 lines
1.5 KiB
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
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%YAML 1.2 |
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--- |
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$id: http://devicetree.org/schemas/leds/backlight/richtek,rt4831-backlight.yaml# |
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$schema: http://devicetree.org/meta-schemas/core.yaml# |
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title: Richtek RT4831 Backlight |
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maintainers: |
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- ChiYuan Huang <[email protected]> |
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description: | |
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RT4831 is a mutifunctional device that can provide power to the LCD display |
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and LCD backlight. |
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For the LCD backlight, it can provide four channel WLED driving capability. |
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Each channel driving current is up to 30mA |
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Datasheet is available at |
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https://www.richtek.com/assets/product_file/RT4831A/DS4831A-05.pdf |
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allOf: |
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- $ref: common.yaml# |
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properties: |
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compatible: |
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const: richtek,rt4831-backlight |
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default-brightness: |
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minimum: 0 |
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maximum: 2048 |
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max-brightness: |
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minimum: 0 |
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maximum: 2048 |
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richtek,pwm-enable: |
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description: | |
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Specify the backlight dimming following by PWM duty or by SW control. |
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type: boolean |
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richtek,bled-ovp-sel: |
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description: | |
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Backlight OVP level selection, currently support 17V/21V/25V/29V. |
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$ref: /schemas/types.yaml#/definitions/uint8 |
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default: 1 |
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minimum: 0 |
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maximum: 3 |
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richtek,channel-use: |
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description: | |
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Backlight LED channel to be used. |
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BIT 0/1/2/3 is used to indicate led channel 1/2/3/4 enable or disable. |
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$ref: /schemas/types.yaml#/definitions/uint8 |
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minimum: 1 |
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maximum: 15 |
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required: |
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- compatible |
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- richtek,channel-use |
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additionalProperties: false
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