Re: [RFC PATCH 1/3] dt-bindings: pinctrl: mt8516/mt8167: Move compatibles from mt66xx to mt6795

[Conor Dooley <conor@kernel.org>]

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On Thu, Jun 25, 2026 at 12:46:30PM +0200, Luca Leonardo Scorcia wrote:
> Pinctrl settings for MediaTek mt8516-mt8167 SoCs use two reg base
> addresses, one for GPIO and the other for EINT, as it is common in the
> "Paris" pinctrl platform that is described in the MediaTek mt6795 docs.
> 
> Move the binding compatible for these two SoCs from mt66xx to the mt6796
> one as a prerequisite for migrating the pinctrl driver to the
> pinctrl-paris platform.

I've not done a very through analysis, but this seems like a massive ABI
break.
The change you're trying to make here will mean that new kernels will
not work with older devicetrees AFAICT.

> 
> Signed-off-by: Luca Leonardo Scorcia <l.scorcia@gmail.com>
> ---
>  .../devicetree/bindings/pinctrl/mediatek,mt65xx-pinctrl.yaml | 2 --
>  .../devicetree/bindings/pinctrl/mediatek,mt6795-pinctrl.yaml | 5 ++++-
>  2 files changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/mediatek,mt65xx-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/mediatek,mt65xx-pinctrl.yaml
> index 1468c6f87cfa..0cff2a352b1f 100644
> --- a/Documentation/devicetree/bindings/pinctrl/mediatek,mt65xx-pinctrl.yaml
> +++ b/Documentation/devicetree/bindings/pinctrl/mediatek,mt65xx-pinctrl.yaml
> @@ -22,9 +22,7 @@ properties:
>        - mediatek,mt7623-pinctrl
>        - mediatek,mt8127-pinctrl
>        - mediatek,mt8135-pinctrl
> -      - mediatek,mt8167-pinctrl
>        - mediatek,mt8173-pinctrl
> -      - mediatek,mt8516-pinctrl
>  
>    reg:
>      maxItems: 1
> diff --git a/Documentation/devicetree/bindings/pinctrl/mediatek,mt6795-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/mediatek,mt6795-pinctrl.yaml
> index 9a937f414cc9..c703de72e1d5 100644
> --- a/Documentation/devicetree/bindings/pinctrl/mediatek,mt6795-pinctrl.yaml
> +++ b/Documentation/devicetree/bindings/pinctrl/mediatek,mt6795-pinctrl.yaml
> @@ -15,7 +15,10 @@ description:
>  
>  properties:
>    compatible:
> -    const: mediatek,mt6795-pinctrl
> +    enum:
> +      - mediatek,mt6795-pinctrl
> +      - mediatek,mt8167-pinctrl
> +      - mediatek,mt8516-pinctrl
>  
>    gpio-controller: true
>  
> -- 
> 2.43.0
> 

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