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27e5c65463
Add 'richtek,bled-ocp-microamp' property to make it chooseable. The wrong backlight ocp level may affect the backlight channel output current smaller than configured. Signed-off-by: ChiYuan Huang <cy_huang@richtek.com> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/1655807788-24511-2-git-send-email-u0084500@gmail.com
68 lines
1.6 KiB
YAML
68 lines
1.6 KiB
YAML
# 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 <cy_huang@richtek.com>
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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,bled-ocp-microamp:
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description: |
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Backlight over current protection level.
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enum: [900000, 1200000, 1500000, 1800000]
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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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