Re: [PATCH 13/36] dt-bindings: arm: Convert PMU binding to json-schema

[Will Deacon]

Hi Rob,

On Fri, Oct 05, 2018 at 11:58:25AM -0500, Rob Herring wrote:
> Convert ARM PMU binding to DT schema format using json-schema.
> 
> Cc: Will Deacon <will.deacon@xxxxxxx>
> Cc: Mark Rutland <mark.rutland@xxxxxxx>
> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Cc: devicetree@xxxxxxxxxxxxxxx
> Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
> ---
>  Documentation/devicetree/bindings/arm/pmu.txt | 70 --------------
>  .../devicetree/bindings/arm/pmu.yaml          | 96 +++++++++++++++++++
>  2 files changed, 96 insertions(+), 70 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/arm/pmu.txt
>  create mode 100644 Documentation/devicetree/bindings/arm/pmu.yaml

[...]

> -- interrupts : 1 combined interrupt or 1 per core. If the interrupt is a per-cpu
> -               interrupt (PPI) then 1 interrupt should be specified.

[...]

> +  interrupts:
> +    oneOf:
> +      - maxItems: 1
> +      - minItems: 2
> +        maxItems: 8
> +        description: 1 interrupt per core.
> +
> +  interrupts-extended:
> +    $ref: '#/properties/interrupts'

This seems like a semantic different between the two representations, or am
I missing something here? Specifically, both the introduction of
interrupts-extended and also dropping any mention of using a single per-cpu
interrupt (the single combined case is no longer support by Linux; not sure
if you want to keep it in the binding).

Will