1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 $id: http://devicetree.org/schemas/leds/backlight/richtek,rt4831-backlight.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Richtek RT4831 Backlight
10 - ChiYuan Huang <cy_huang@richtek.com>
13 RT4831 is a mutifunctional device that can provide power to the LCD display
16 For the LCD backlight, it can provide four channel WLED driving capability.
17 Each channel driving current is up to 30mA
19 Datasheet is available at
20 https://www.richtek.com/assets/product_file/RT4831A/DS4831A-05.pdf
27 const: richtek,rt4831-backlight
39 Specify the backlight dimming following by PWM duty or by SW control.
44 Backlight OVP level selection, currently support 17V/21V/25V/29V.
45 $ref: /schemas/types.yaml#/definitions/uint8
50 richtek,bled-ocp-microamp:
52 Backlight over current protection level.
53 enum: [900000, 1200000, 1500000, 1800000]
57 Backlight LED channel to be used.
58 BIT 0/1/2/3 is used to indicate led channel 1/2/3/4 enable or disable.
59 $ref: /schemas/types.yaml#/definitions/uint8
67 additionalProperties: false