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| author | ChiYuan Huang <cy_huang@richtek.com> | 2021-05-17 17:35:59 +0300 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2021-06-02 12:50:00 +0300 |
| commit | 4f10f31e72582bb68ebd39505e2f2f5ce906eb47 (patch) | |
| tree | 7bf7f37ed0ba6e7269ed3b073bfdedc2995a8d0d /Documentation/devicetree/bindings/leds/backlight | |
| parent | a1649a5260631979c68e5b2012f60f90300e646f (diff) | |
| download | linux-4f10f31e72582bb68ebd39505e2f2f5ce906eb47.tar.xz | |
backlight: rt4831: Adds DT binding document for Richtek RT4831 backlight
Adds DT binding document for Richtek RT4831 backlight.
Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings/leds/backlight')
| -rw-r--r-- | Documentation/devicetree/bindings/leds/backlight/richtek,rt4831-backlight.yaml | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/leds/backlight/richtek,rt4831-backlight.yaml b/Documentation/devicetree/bindings/leds/backlight/richtek,rt4831-backlight.yaml new file mode 100644 index 000000000000..e0ac68694b63 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/backlight/richtek,rt4831-backlight.yaml @@ -0,0 +1,62 @@ +# 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,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 |