Re: [PATCH 1/2] dt-bindings: arm: Convert CoreSight bindings to DT schema

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On Sat, May 21, 2022 at 04:54:48PM +0200, Krzysztof Kozlowski wrote:
> On 20/05/2022 23:44, Rob Herring wrote:
> > Each CoreSight component has slightly different requirements and
> > nothing applies to every component, so each CoreSight component has its
> > own schema document.
> > 
> 
> (...)
> 
> > +        const: arm,coresight-dynamic-funnel
> > +  required:
> > +    - compatible
> > +
> > +allOf:
> > +  - $ref: /schemas/arm/primecell.yaml#
> > +
> > +properties:
> > +  compatible:
> > +    items:
> > +      - const: arm,coresight-dynamic-funnel
> > +      - const: arm,primecell
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  clocks:
> > +    minItems: 1
> > +    maxItems: 2
> > +
> > +  clock-names:
> > +    minItems: 1
> > +    items:
> > +      - const: apb_pclk
> > +      - const: atclk
> > +
> > +  in-ports:
> > +    $ref: /schemas/graph.yaml#/properties/ports
> 
> Shouldn't this be with unevaluatedProperties:false?

No, because the ports definition has 'additionalProperties: false'. That 
does mean port nodes aren't actually restricted to 0-7 in any way. Not 
really any way to fix that other than listing #address-cells/#size-cells 
here or a pattern matching disallowed ports. But I think the limit to 8 
is just current implementations and perhaps practical limit of how many 
streams of trace data can be combined.

> > +
> > +    patternProperties:
> > +      '^port(@[0-7])?$':
> > +        description: Input connections from CoreSight Trace bus
> > +        $ref: /schemas/graph.yaml#/properties/port




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