Re: [PATCH v5 05/25] dt-bindings: clock: mediatek: regroup MT8188 dt-bindings into MT8186

[Rob Herring <robh@kernel.org>]

On Sun, Aug 02, 2026 at 11:22:32AM +0000, sashiko-bot@kernel.org wrote:
> Thank you for your contribution! Sashiko AI review found 1 potential issue(s) to consider:
> - [Medium] The `allOf` conditional block incorrectly uses `enum` instead of `contains: enum` to match `compatible` strings, breaking schema validation for MT8188 nodes that require `#reset-cells`.
> --
> 
> --- Patch [5]: [PATCH v5 05/25] dt-bindings: clock: mediatek: regroup MT8188 dt-bindings into MT8186 ---
> commit 504c0ed21eb6420741b43bf9c5aae33308e93b7b
> Author: Louis-Alexis Eyraud <louisalexis.eyraud@collabora.com>
> 
> dt-bindings: clock: mediatek: regroup MT8188 dt-bindings into MT8186
> 
> This commit merges the MT8188 clock and system clock device tree bindings
> into the existing MT8186 schema files. It aims to ease maintainability by
> having common files for SoCs with similar clock controller designs.
> 
> > diff --git a/Documentation/devicetree/bindings/clock/mediatek,mt8186-clock.yaml b/Documentation/devicetree/bindings/clock/mediatek,mt8186-clock.yaml
> > --- a/Documentation/devicetree/bindings/clock/mediatek,mt8186-clock.yaml
> > +++ b/Documentation/devicetree/bindings/clock/mediatek,mt8186-clock.yaml
> 
> [ ... ]
> 
> > @@ -42,11 +65,36 @@ properties:
> >    '#clock-cells':
> >      const: 1
> >  
> > +  '#reset-cells':
> > +    const: 1
> > +
> >  required:
> >    - compatible
> >    - reg
> >    - '#clock-cells'
> >  
> > +allOf:
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          enum:
> 
> [Severity: Medium]
> Does this compatible match logic need a "contains:" keyword?
> 
> Since the compatible property is evaluated as a string array, matching a list
> of scalar strings directly against it without "contains:" will always evaluate
> to false.
> 
> Without "contains:", does this mean the schema will skip the "then" branch
> and incorrectly apply the "else" branch ('#reset-cells': false) to all MT8188
> nodes, causing correct device trees to fail dtbs_check and allowing incomplete
> ones to pass?

The tools will fix this up to be a list, so that's not an issue. 
However, using "contains" here is preferred so the match will work if 
one of the compatible strings becomes a fallback. IOW, the position and 
number of compatibles should not matter.

Rob