On 05-01-2026 15:25, Daniel Thompson wrote:
> On Mon, Jan 05, 2026 at 02:21:19PM +0530, Sudarshan Shetty wrote:
>> Update the gpio-backlight binding to support configurations that require
>> more than one GPIO for enabling/disabling the backlight.
>>
>> Signed-off-by: Sudarshan Shetty <[email protected]>
>> ---
>> .../bindings/leds/backlight/gpio-backlight.yaml | 12 +++++++++++-
>> 1 file changed, 11 insertions(+), 1 deletion(-)
>>
>> diff --git
>> a/Documentation/devicetree/bindings/leds/backlight/gpio-backlight.yaml
>> b/Documentation/devicetree/bindings/leds/backlight/gpio-backlight.yaml
>> index 584030b6b0b9..1483ce4a3480 100644
>> --- a/Documentation/devicetree/bindings/leds/backlight/gpio-backlight.yaml
>> +++ b/Documentation/devicetree/bindings/leds/backlight/gpio-backlight.yaml
>> @@ -17,7 +17,8 @@ properties:
>>
>> gpios:
>> description: The gpio that is used for enabling/disabling the backlight.
>> - maxItems: 1
>> + minItems: 1
>> + maxItems: 2
>
> Why 2?
>
In the current design, the LVDS panel has a single backlight that
is controlled by two GPIOs. Initially, It described as two separate
backlight devices using the same gpio-backlight driver, since the
existing driver supports only one GPIO per instance.
So the maintainer suggested to extend the gpio-backlight driver
and bindings to support multiple GPIOs.
https://lore.kernel.org/all/q63bdon55app4gb2il5e7skyc6z2amcnaiqbqlhen7arkxphtb@3jejbelji2ti/
>
> Daniel.
