linux-kernel - Re: [PATCH 1/4] dt-bindings: iommu: dart: Add t8103-usb4-dart compatible

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Message-ID: <20230130214130.GA3576591-robh@kernel.org>
Date:   Mon, 30 Jan 2023 15:41:30 -0600
From:   Rob Herring <robh@...nel.org>
To:     Sven Peter <sven@...npeter.dev>
Cc:     Hector Martin <marcan@...can.st>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Alyssa Rosenzweig <alyssa@...enzweig.io>,
        Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        linux-arm-kernel@...ts.infradead.org, asahi@...ts.linux.dev,
        iommu@...ts.linux.dev, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] dt-bindings: iommu: dart: Add t8103-usb4-dart
 compatible

On Sat, Jan 28, 2023 at 12:11:11PM +0100, Sven Peter wrote:
> This DART variant is found in the t8103 (M1) SoCs and used for the
> USB4/Thunderbolt PCIe ports. Unlike the regular t8103 DART these support
> up to 64 SIDs and require a slightly different MMIO layout. This variant
> is only found on the M1 SoCs.

Looks fine to me other than the discrepancy in the name.

> Signed-off-by: Sven Peter <sven@...npeter.dev>
> ---
>  Documentation/devicetree/bindings/iommu/apple,dart.yaml | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/Documentation/devicetree/bindings/iommu/apple,dart.yaml b/Documentation/devicetree/bindings/iommu/apple,dart.yaml
> index 903edf85d72e..f9c1843c074d 100644
> --- a/Documentation/devicetree/bindings/iommu/apple,dart.yaml
> +++ b/Documentation/devicetree/bindings/iommu/apple,dart.yaml
> @@ -24,6 +24,7 @@ properties:
>    compatible:
>      enum:
>        - apple,t8103-dart
> +      - apple,t8103-dart-usb4
>        - apple,t8110-dart
>        - apple,t6000-dart
>  
> -- 
> 2.25.1
>