linux-kernel - Re: [PATCH v3 2/7] dt-bindings: memory: mtk-smi: No need mediatek,larb-id for mt8167

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Message-ID: <65919fad-3fbc-728d-4f14-5490b59e30a9@collabora.com>
Date:   Thu, 13 Jan 2022 16:44:09 +0100
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Yong Wu <yong.wu@...iatek.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>
Cc:     Joerg Roedel <joro@...tes.org>, Tomasz Figa <tfiga@...omium.org>,
        linux-mediatek@...ts.infradead.org, srv_heupstream@...iatek.com,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        iommu@...ts.linux-foundation.org, youlin.pei@...iatek.com,
        anan.sun@...iatek.com, lc.kan@...iatek.com, yi.kuo@...iatek.com,
        anthony.huang@...iatek.com
Subject: Re: [PATCH v3 2/7] dt-bindings: memory: mtk-smi: No need
 mediatek,larb-id for mt8167

Il 13/01/22 12:10, Yong Wu ha scritto:
> Mute the warning from "make dtbs_check":
> 
> larb@...16000: 'mediatek,larb-id' is a required property
> 	arch/arm64/boot/dts/mediatek/mt8167-pumpkin.dt.yaml
> larb@...01000: 'mediatek,larb-id' is a required property
> 	arch/arm64/boot/dts/mediatek/mt8167-pumpkin.dt.yaml
> larb@...10000: 'mediatek,larb-id' is a required property
> 	arch/arm64/boot/dts/mediatek/mt8167-pumpkin.dt.yaml
> 
> As the description of mediatek,larb-id, the property is only
> required when the larbid is not consecutive from its IOMMU point of view.
> 
> Also, from the description of mediatek,larbs in
> Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml, all the larbs
> must sort by the larb index.
> 
> In mt8167, there is only one IOMMU HW and three larbs. The drivers already
> know its larb index from the mediatek,larbs property of IOMMU, thus no
> need this property.
> 
> Fixes: 27bb0e42855a ("dt-bindings: memory: mediatek: Convert SMI to DT schema")
> Signed-off-by: Yong Wu <yong.wu@...iatek.com>

Acked-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>