linux-kernel - Re: [PATCH v6 01/20] dt-bindings: iommu: mediatek: Increase max interrupt number

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Date:   Thu, 25 Aug 2022 15:41:00 +0200
From:   Matthias Brugger <matthias.bgg@...il.com>
To:     Tinghan Shen <tinghan.shen@...iatek.com>,
        Yong Wu <yong.wu@...iatek.com>, Joerg Roedel <joro@...tes.org>,
        Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Lee Jones <lee@...nel.org>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        MandyJH Liu <mandyjh.liu@...iatek.com>
Cc:     iommu@...ts.linux.dev, linux-mediatek@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [PATCH v6 01/20] dt-bindings: iommu: mediatek: Increase max
 interrupt number



On 11/08/2022 04:57, Tinghan Shen wrote:
> mt8195 infra iommu uses 5 interrupts.
> 
> Signed-off-by: Tinghan Shen <tinghan.shen@...iatek.com>
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>

Reviewed-by: Matthias Brugger <matthias.bgg@...il.com>

Joerg, will you take this through your tree or shall I take care of it?

Regards,
Matthias

> ---
>   .../bindings/iommu/mediatek,iommu.yaml        | 29 ++++++++++++++-----
>   1 file changed, 22 insertions(+), 7 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml b/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml
> index fee0241b50988..f5634c1642e20 100644
> --- a/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml
> +++ b/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml
> @@ -91,7 +91,8 @@ properties:
>       maxItems: 1
>   
>     interrupts:
> -    maxItems: 1
> +    minItems: 1
> +    maxItems: 5
>   
>     clocks:
>       items:
> @@ -183,14 +184,28 @@ allOf:
>         required:
>           - mediatek,infracfg
>   
> -  - if: # The IOMMUs don't have larbs.
> -      not:
> -        properties:
> -          compatible:
> -            contains:
> -              const: mediatek,mt8195-iommu-infra
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: mediatek,mt8195-iommu-infra
>   
>       then:
> +      properties:
> +        interrupts:
> +          description: The IOMMU has 5 banks. Each bank has its own interrupt.
> +          items:
> +            - description: The interrupt for IOMMU bank0
> +            - description: The interrupt for IOMMU bank1
> +            - description: The interrupt for IOMMU bank2
> +            - description: The interrupt for IOMMU bank3
> +            - description: The interrupt for IOMMU bank4
> +
> +    else: # For the MM IOMMU
> +      properties:
> +        interrupts:
> +          maxItems: 1
> +
>         required:
>           - mediatek,larbs
>