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Message-ID: <9a5afd0c-0c92-52c3-72d9-2c2f6c469e05@gmail.com>
Date:   Tue, 14 Jun 2022 17:16:40 +0200
From:   Matthias Brugger <matthias.bgg@...il.com>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>, yong.wu@...iatek.com
Cc:     joro@...tes.org, will@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org,
        iommu@...ts.linux-foundation.org,
        linux-mediatek@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        krzysztof.kozlowski@...aro.org
Subject: Re: [PATCH v3 5/6] dt-bindings: iommu: mediatek: Add mediatek,pericfg
 phandle



On 09/06/2022 12:08, AngeloGioacchino Del Regno wrote:
> Add property "mediatek,pericfg" to let the mtk_iommu driver retrieve
> a phandle to the infracfg syscon instead of performing a per-soc
> compatible lookup in the entire devicetree and set it as a required
> property for MT8195's infra IOMMU.
> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>

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

> ---
>   .../devicetree/bindings/iommu/mediatek,iommu.yaml  | 14 ++++++++++++++
>   1 file changed, 14 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml b/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml
> index 4142a568b293..d5e3272a54e8 100644
> --- a/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml
> +++ b/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml
> @@ -116,6 +116,10 @@ properties:
>         Refer to bindings/memory-controllers/mediatek,smi-larb.yaml. It must sort
>         according to the local arbiter index, like larb0, larb1, larb2...
>   
> +  mediatek,pericfg:
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +    description: The phandle to the mediatek pericfg syscon
> +
>     '#iommu-cells':
>       const: 1
>       description: |
> @@ -183,6 +187,16 @@ allOf:
>         required:
>           - mediatek,infracfg
>   
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: mediatek,mt8195-iommu-infra
> +
> +    then:
> +      required:
> +        - mediatek,pericfg
> +
>     - if: # The IOMMUs don't have larbs.
>         not:
>           properties:

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