Re: [PATCH v1 3/6] dt-bindings: mediatek,mt6779-keypad: add mediatek,double-keys

AngeloGioacchino Del Regno
2022-07-21T08:40:58Z

Il 20/07/22 16:48, Mattijs Korpershoek ha scritto:
> MediaTek keypad has 2 modes of detecting key events:
> - single key: each (row, column) can detect one key
> - double key: each (row, column) is a group of 2 keys
>
> Currently, only single key detection is supported (by default)
> Add an optional property, mediatek,double-keys to support double
> key detection.
>
> Double key support exists to minimize cost, since it reduces the number
> of pins required for physical keys.
>
> Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
>
> diff --git a/Documentation/devicetree/bindings/input/mediatek,mt6779-keypad.yaml b/Documentation/devicetree/bindings/input/mediatek,mt6779-keypad.yaml
> index ca8ae40a73f7..03c9555849e5 100644
> --- a/Documentation/devicetree/bindings/input/mediatek,mt6779-keypad.yaml
> +++ b/Documentation/devicetree/bindings/input/mediatek,mt6779-keypad.yaml
> @@ -49,6 +49,12 @@ properties:
> maximum: 256
> default: 16
>
> + mediatek,double-keys:
> + description: |
> + use double key matrix instead of single key
> + when set, each (row,column) is a group that can detect 2 keys

We can make it shorter and (imo) easier to understand, like:

mediatek,double-keys:

description: Each (row, column) group has two keys

...also because, if we say that the group "can detect" two keys, it may be
creating a misunderstandment such as "if I press one key, it gives me two
different input events for two different keys.", which is something that
wouldn't make a lot of sense, would it? :-)

> + type: boolean
> +
> required:
> - compatible
> - reg