Re: [PATCH v5 5/7] dt-bindings: input: matrix_keypad - add settle time after enable all columns

[Manuel Traut]

On Fri, Jan 10, 2025 at 06:49:04AM +0100, Markus Burri wrote:
> Matrix_keypad with high capacity need a longer settle time after enable
> all columns.
> Add optional property to specify the settle time
> 
> Signed-off-by: Markus Burri <markus.burri@xxxxxx>
> Reviewed-by: Rob Herring (Arm) <robh@xxxxxxxxxx>

Reviewed-by: Manuel Traut <manuel.traut@xxxxxx>

> ---
>  .../devicetree/bindings/input/gpio-matrix-keypad.yaml       | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/input/gpio-matrix-keypad.yaml b/Documentation/devicetree/bindings/input/gpio-matrix-keypad.yaml
> index 9c91224..dc08d39 100644
> --- a/Documentation/devicetree/bindings/input/gpio-matrix-keypad.yaml
> +++ b/Documentation/devicetree/bindings/input/gpio-matrix-keypad.yaml
> @@ -57,6 +57,12 @@ properties:
>        before we can scan keypad after activating column gpio.
>      default: 0
>  
> +  all-cols-on-delay-us:
> +    description:
> +      Delay, measured in microseconds, that is needed
> +      after activating all column gpios.
> +    default: 0
> +
>    drive-inactive-cols:
>      type: boolean
>      description:
> -- 
> 2.39.5
>