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Message-ID: <20200623083827.GC4098287@ulmo>
Date:   Tue, 23 Jun 2020 10:38:27 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     Krishna Reddy <vdumpa@...dia.com>
Cc:     snikam@...dia.com, mperttunen@...dia.com, bhuntsman@...dia.com,
        will@...nel.org, joro@...tes.org, linux-kernel@...r.kernel.org,
        praithatha@...dia.com, talho@...dia.com,
        iommu@...ts.linux-foundation.org, nicolinc@...dia.com,
        linux-tegra@...r.kernel.org, yhsu@...dia.com, treding@...dia.com,
        robin.murphy@....com, linux-arm-kernel@...ts.infradead.org,
        bbiswas@...dia.com
Subject: Re: [PATCH v6 2/4] dt-bindings: arm-smmu: Add binding for Tegra194
 SMMU

On Thu, Jun 04, 2020 at 04:44:12PM -0700, Krishna Reddy wrote:
> Add binding for NVIDIA's Tegra194 Soc SMMU that is based
> on ARM MMU-500.
> 
> Signed-off-by: Krishna Reddy <vdumpa@...dia.com>
> ---
>  Documentation/devicetree/bindings/iommu/arm,smmu.yaml | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
> index e3ef1c69d1326..8f7ffd248f303 100644
> --- a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
> +++ b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
> @@ -37,6 +37,11 @@ properties:
>                - qcom,sc7180-smmu-500
>                - qcom,sdm845-smmu-500
>            - const: arm,mmu-500
> +      - description: NVIDIA SoCs that use more than one "arm,mmu-500"
> +        items:
> +          - enum:
> +              - nvdia,tegra194-smmu-500

The -500 suffix here seems a bit redundant since there's no other type
of SMMU in Tegra194, correct?

Thierry

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