linux-kernel - Re: [PATCH v1] dt-bindings: iommu: mediatek: mt8195: Fix max interrupts

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Message-ID: <eff1c862-e3f4-d28b-fafa-c6053c48189c@linaro.org>
Date:   Thu, 8 Sep 2022 15:30:37 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     matthias.bgg@...nel.org, Yong Wu <yong.wu@...iatek.com>,
        Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>
Cc:     devicetree@...r.kernel.org, Robin Murphy <robin.murphy@....com>,
        linux-kernel@...r.kernel.org,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        iommu@...ts.linux.dev, Rob Herring <robh+dt@...nel.org>,
        linux-mediatek@...ts.infradead.org,
        Matthias Brugger <matthias.bgg@...il.com>,
        linux-arm-kernel@...ts.infradead.org,
        Matthias Brugger <mbrugger@...e.com>
Subject: Re: [PATCH v1] dt-bindings: iommu: mediatek: mt8195: Fix max
 interrupts

On 08/09/2022 15:25, matthias.bgg@...nel.org wrote:
> From: Matthias Brugger <mbrugger@...e.com>
> 
> The mt8195-iommu-infra has five banks and one interrupt for each.
> Reflect that in the binding.
> 
> Signed-off-by: Matthias Brugger <mbrugger@...e.com>
> 
> ---
> 
>  .../bindings/iommu/mediatek,iommu.yaml        | 19 ++++++++++++++++++-
>  1 file changed, 18 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml b/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml
> index fee0241b50988..621aca2adfb7f 100644
> --- a/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml
> +++ b/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml
> @@ -91,7 +91,7 @@ properties:
>      maxItems: 1
>  
>    interrupts:
> -    maxItems: 1

Keep here wide constraints - minItems:1, maxItems:5

> +    description: each bank has one dedicated interrupt


>  
>    clocks:
>      items:
> @@ -183,6 +183,19 @@ allOf:
>        required:
>          - mediatek,infracfg
>  
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: mediatek,mt8195-iommu-infra
> +
> +    then:
> +      properties:
> +        interrupts:
> +          maxItems: 5

and then minItems:5

> +      required:
> +        - interrupts

This seems unrelated and not really needed.

> +
>    - if: # The IOMMUs don't have larbs.
>        not:
>          properties:
> @@ -191,8 +204,12 @@ allOf:
>                const: mediatek,mt8195-iommu-infra
>  
>      then:
> +      properties:
> +        interrupts:
> +          maxItems: 1
>        required:
>          - mediatek,larbs
> +        - interrupts

This seems unrelated and not really needed.

>  
>  additionalProperties: false
>  


Best regards,
Krzysztof