linux-kernel - Re: [PATCH v1 1/2] dt-bindings: backlight: gpio-backlight: allow multiple GPIOs

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Message-ID: <aVuKdAyXfWLs-WJI@aspen.lan>
Date: Mon, 5 Jan 2026 09:55:00 +0000
From: Daniel Thompson <daniel@...cstar.com>
To: Sudarshan Shetty <tessolveupstream@...il.com>
Cc: lee@...nel.org, danielt@...nel.org, jingoohan1@...il.com, deller@....de,
	pavel@...nel.org, robh@...nel.org, krzk+dt@...nel.org,
	conor+dt@...nel.org, dri-devel@...ts.freedesktop.org,
	linux-fbdev@...r.kernel.org, linux-leds@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 1/2] dt-bindings: backlight: gpio-backlight: allow
 multiple GPIOs

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 <tessolveupstream@...il.com>
> ---
>  .../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?


Daniel.