diff options
| author | Astrid Rost <astrid.rost@axis.com> | 2023-07-03 15:03:12 +0200 |
|---|---|---|
| committer | Lee Jones <lee@kernel.org> | 2023-07-28 09:26:21 +0100 |
| commit | 713899c0627c440851a543b36b0ffe36fade2622 (patch) | |
| tree | 93f34c33d031bb3c360e1152f064ed8e44d01b8b /Documentation/devicetree/bindings/leds/common.yaml | |
| parent | 7a72f33b6771d37aafe1d396f8d49e5886e6262e (diff) | |
dt-bindings: leds: Read max-brightness from device tree
Normally, the maximum brightness is determined by the hardware, and this
property is not required. This property is used to set a software limit.
It could happen that an LED is made so bright that it gets damaged or
causes damage due to restrictions in a specific system, such as mounting
conditions.
Note that this flag is mainly used for PWM-LEDs, where it is not possible
to map brightness to current. Drivers for other controllers should use
led-max-microamp.
Signed-off-by: Astrid Rost <astrid.rost@axis.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Link: https://lore.kernel.org/r/20230703130313.548519-2-astrid.rost@axis.com
Signed-off-by: Lee Jones <lee@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/leds/common.yaml')
| -rw-r--r-- | Documentation/devicetree/bindings/leds/common.yaml | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/leds/common.yaml b/Documentation/devicetree/bindings/leds/common.yaml index 58b492d00246..1c425eb5bec9 100644 --- a/Documentation/devicetree/bindings/leds/common.yaml +++ b/Documentation/devicetree/bindings/leds/common.yaml @@ -158,6 +158,18 @@ properties: For flash LED controllers with configurable current this property is mandatory for the LEDs in the non-flash modes (e.g. torch or indicator). + max-brightness: + description: + Normally, the maximum brightness is determined by the hardware, and this + property is not required. This property is used to set a software limit. + It could happen that an LED is made so bright that it gets damaged or + causes damage due to restrictions in a specific system, such as mounting + conditions. + Note that this flag is mainly used for PWM-LEDs, where it is not possible + to map brightness to current. Drivers for other controllers should use + led-max-microamp. + $ref: /schemas/types.yaml#definitions/uint32 + panic-indicator: description: This property specifies that the LED should be used, if at all possible, |