Re: [PATCH v4 2/4] dt-bindings: input: add settling-time-us common property

[Rob Herring <robh@kernel.org>]

On Thu, Mar 05, 2026 at 02:20:48PM -0500, Hugo Villeneuve wrote:
> From: Hugo Villeneuve <hvilleneuve@dimonoff.com>
> 
> Add common property that can be reused by other bindings.
> 
> Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
> ---
> Note: a similar property is used by gpio-matrix-keypad.yaml:
>   col-scan-delay-us
> ---
>  Documentation/devicetree/bindings/input/input.yaml | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/input/input.yaml b/Documentation/devicetree/bindings/input/input.yaml
> index 502e0b7eb500a..14652d324e2ca 100644
> --- a/Documentation/devicetree/bindings/input/input.yaml
> +++ b/Documentation/devicetree/bindings/input/input.yaml
> @@ -66,6 +66,14 @@ properties:
>        reset automatically. Device with key pressed reset feature can specify
>        this property.
>  
> +  settling-time-us:
> +    description:
> +      Delay, in microseconds, when activating an output line/col/row GPIO
> +      before we can reliably read other input GPIOs that maybe affected by this
> +      output. This can be the case for an output with a RC circuit that affects
> +      ramp-up/down times.

Whether it is GPIOs or not depends on the implementation. Just drop 
'GPIO' and replace 'GPIOs' with 'lines'.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>

Rob