On Tue, Jan 13, 2026 at 10:15:53AM +0530, [email protected] wrote: > > > 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/
Right. So, once we support multiple GPIOs then why limit it to 2? Daniel.
