linux-kernel - Re: [PATCH v10 4/5] dt-bindings: arm-smmu: add binding for Tegra194 SMMU

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Message-ID: <ec06de3c-fefa-eaa4-3498-abd1eb0d78d7@nvidia.com>
Date:   Wed, 8 Jul 2020 13:25:15 +0100
From:   Jon Hunter <jonathanh@...dia.com>
To:     Krishna Reddy <vdumpa@...dia.com>, <joro@...tes.org>,
        <will@...nel.org>, <robin.murphy@....com>, <robh+dt@...nel.org>,
        <treding@...dia.com>
CC:     <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <iommu@...ts.linux-foundation.org>, <linux-kernel@...r.kernel.org>,
        <linux-tegra@...r.kernel.org>, <yhsu@...dia.com>,
        <snikam@...dia.com>, <praithatha@...dia.com>, <talho@...dia.com>,
        <bbiswas@...dia.com>, <mperttunen@...dia.com>,
        <nicolinc@...dia.com>, <bhuntsman@...dia.com>,
        <nicoleotsuka@...il.com>
Subject: Re: [PATCH v10 4/5] dt-bindings: arm-smmu: add binding for Tegra194
 SMMU


On 08/07/2020 06:00, Krishna Reddy wrote:
> Add binding for NVIDIA's Tegra194 SoC SMMU.
> 
> Signed-off-by: Krishna Reddy <vdumpa@...dia.com>
> ---
>  .../devicetree/bindings/iommu/arm,smmu.yaml    | 18 ++++++++++++++++++
>  1 file changed, 18 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
> index d7ceb4c34423..ac1f526c3424 100644
> --- a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
> +++ b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
> @@ -38,6 +38,11 @@ properties:
>                - qcom,sc7180-smmu-500
>                - qcom,sdm845-smmu-500
>            - const: arm,mmu-500
> +      - description: NVIDIA SoCs that program two ARM MMU-500s identically
> +        items:
> +          - enum:
> +              - nvidia,tegra194-smmu
> +          - const: nvidia,smmu-500
>        - items:
>            - const: arm,mmu-500
>            - const: arm,smmu-v2
> @@ -138,6 +143,19 @@ required:
>  
>  additionalProperties: false
>  
> +allOf:
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - nvidia,tegra194-smmu
> +    then:
> +      properties:
> +        reg:
> +          minItems: 2
> +          maxItems: 2
> +
>  examples:
>    - |+
>      /* SMMU with stream matching or stream indexing */
> 

Reviewed-by: Jon Hunter <jonathanh@...dia.com>

Thanks
Jon

-- 
nvpublic