Re: [PATCH v5 1/9] dt-bindings: mfd: mt6397: Add MT6392 PMIC

[Krzysztof Kozlowski <krzk@kernel.org>]

On Mon, Apr 20, 2026 at 10:30:00PM +0100, Luca Leonardo Scorcia wrote:
> From: Fabien Parent <parent.f@gmail.com>
> 
> Add the currently supported bindings for the MT6392 PMIC. Its MFD driver
> does not use the compatible property to bind the regulator driver, so
> don't mark it as required.
> 
> Signed-off-by: Fabien Parent <parent.f@gmail.com>
> Signed-off-by: Val Packett <val@packett.cool>
> Signed-off-by: Luca Leonardo Scorcia <l.scorcia@gmail.com>
> ---
>  .../bindings/mfd/mediatek,mt6397.yaml         | 27 ++++++++++++++++---
>  1 file changed, 24 insertions(+), 3 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/mfd/mediatek,mt6397.yaml b/Documentation/devicetree/bindings/mfd/mediatek,mt6397.yaml
> index 05c121b0cb3d..2866e95e338b 100644
> --- a/Documentation/devicetree/bindings/mfd/mediatek,mt6397.yaml
> +++ b/Documentation/devicetree/bindings/mfd/mediatek,mt6397.yaml
> @@ -40,6 +40,10 @@ properties:
>            - mediatek,mt6358
>            - mediatek,mt6359
>            - mediatek,mt6397
> +      - items:
> +          - enum:
> +              - mediatek,mt6392
> +          - const: mediatek,mt6323
>        - items:
>            - enum:
>                - mediatek,mt6366
> @@ -68,6 +72,10 @@ properties:
>                - mediatek,mt6331-rtc
>                - mediatek,mt6358-rtc
>                - mediatek,mt6397-rtc
> +          - items:
> +              - enum:
> +                  - mediatek,mt6392-rtc
> +              - const: mediatek,mt6323-rtc
>            - items:
>                - enum:
>                    - mediatek,mt6366-rtc
> @@ -99,9 +107,6 @@ properties:
>                    - mediatek,mt6366-regulator
>                - const: mediatek,mt6358-regulator
>  
> -    required:
> -      - compatible

Please create a new binding file for your device. Having two ways to
define child is not making this binding easier to follow.

The style of defining children with compatibles should be followed by
"requierd: compatible". I am rather against of exceptions, unless needed
and this is not such case where you need one.

Best regards,
Krzysztof