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- # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
- %YAML 1.2
- ---
- $id: http://devicetree.org/schemas/leds/backlight/richtek,rt4831-backlight.yaml#
- $schema: http://devicetree.org/meta-schemas/core.yaml#
- title: Richtek RT4831 Backlight
- maintainers:
- - ChiYuan Huang <cy_huang@richtek.com>
- description: |
- RT4831 is a mutifunctional device that can provide power to the LCD display
- and LCD backlight.
- For the LCD backlight, it can provide four channel WLED driving capability.
- Each channel driving current is up to 30mA
- Datasheet is available at
- https://www.richtek.com/assets/product_file/RT4831A/DS4831A-05.pdf
- allOf:
- - $ref: common.yaml#
- properties:
- compatible:
- const: richtek,rt4831-backlight
- default-brightness:
- minimum: 0
- maximum: 2048
- max-brightness:
- minimum: 0
- maximum: 2048
- richtek,pwm-enable:
- description: |
- Specify the backlight dimming following by PWM duty or by SW control.
- type: boolean
- richtek,bled-ovp-sel:
- description: |
- Backlight OVP level selection, currently support 17V/21V/25V/29V.
- $ref: /schemas/types.yaml#/definitions/uint8
- default: 1
- minimum: 0
- maximum: 3
- richtek,bled-ocp-microamp:
- description: |
- Backlight over current protection level.
- enum: [900000, 1200000, 1500000, 1800000]
- richtek,channel-use:
- description: |
- Backlight LED channel to be used.
- BIT 0/1/2/3 is used to indicate led channel 1/2/3/4 enable or disable.
- $ref: /schemas/types.yaml#/definitions/uint8
- minimum: 1
- maximum: 15
- required:
- - compatible
- - richtek,channel-use
- additionalProperties: false
|
