Re: [PATCH] dt-bindings: input: mediatek,mt6779-keypad: add the MT8173 keypad

[Rob Herring (Arm)]

On Tue, 15 Sep 2026 22:47:50 -0500, Ryan Brue wrote:
> MT8173's keypad controller is the same block this driver already handles.
> Its register map agrees offset for offset with the MT6779 one -- STA 0x00,
> MEM1..MEM5 0x04..0x14, DEBOUNCE 0x18, SEL 0x20, EN 0x24 -- and
> mt6779-keypad drives it with no code change, so the node only needs the
> fallback compatible in second position. Add the mt8173 string to the
> existing enum, which is what mt6873, mt8183, mt8365 and mt8516 already do.
> 
> Verified on an MT8173 board (Amazon Fire HD 10 2017): the volume rocker
> reports through mt6779-keypad with no driver modification.
> 
> Assisted-by: LLM
> Signed-off-by: Ryan Brue <ryanbrue.dev@xxxxxxxxx>
> ---
> This is the binding half only. The board device tree that uses it, an Amazon
> Fire HD 10 (2017), is not upstream yet and comes with the rest of that
> board's nodes later; adding the compatible first keeps that submission from
> carrying a forward reference.
> 
> No driver change goes with it. mt6779-keypad matches on the fallback, which
> is how mt8183, mt8365 and mt8516 bind today -- only mt6779 and mt6873 are in
> the driver's own match table.
> ---
>  Documentation/devicetree/bindings/input/mediatek,mt6779-keypad.yaml | 1 +
>  1 file changed, 1 insertion(+)
> 

Acked-by: Rob Herring (Arm) <robh@xxxxxxxxxx>