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dt-bindings: leds: pwm: Add enable-gpios property

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Some PWM LED driver chips like TPS92380 and LT3743 require a separate
enable signal in addition to PWM control. Add this property to allow
device trees to specify such GPIO, which will be controlled
automatically by the driver based on the LED brightness state.

Signed-off-by: LI Qingwu <Qing-wu.Li@leica-geosystems.com.cn>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20251117054511.730246-1-Qing-wu.Li@leica-geosystems.com.cn
Signed-off-by: Lee Jones <lee@kernel.org>
This commit is contained in:
LI Qingwu
2025-11-17 05:45:08 +00:00
committed by Lee Jones
parent 88aa23c128
commit d7dca03a48
1 changed files with 7 additions and 0 deletions
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7
Documentation/devicetree/bindings/leds/leds-pwm.yaml
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@@ -40,6 +40,13 @@ patternProperties:
initialization. If the option is not set then max brightness is used.
$ref: /schemas/types.yaml#/definitions/uint32
enable-gpios:
description:
GPIO for LED hardware enable control. Set active when brightness is
non-zero and inactive when brightness is zero.
The GPIO default state follows the "default-state" property.
maxItems: 1
required:
- pwms
- max-brightness