| # 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 |
