linux-kernel - Re: [PATCH 7/8] dt-bindings: iommu: mediatek: Require mediatek,infracfg for mt2712/8173

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Date:   Tue, 17 May 2022 20:41:43 -0500
From:   Rob Herring <robh@...nel.org>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Cc:     yong.wu@...iatek.com, joro@...tes.org, will@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, matthias.bgg@...il.com,
        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
Subject: Re: [PATCH 7/8] dt-bindings: iommu: mediatek: Require
 mediatek,infracfg for mt2712/8173

On Tue, May 17, 2022 at 03:21:06PM +0200, AngeloGioacchino Del Regno wrote:
> Both MT2712 and MT8173 got a mediatek,infracfg phandle: add that to
> the required properties for these SoCs to deprecate the old way of
> looking for SoC-specific infracfg compatible in the entire devicetree.

Wait, what? If there's only one possible node that can match, I prefer 
the 'old way'. Until we implemented a phandle cache, searching the 
entire tree was how phandle lookups worked too, so not any better.

But if this makes things more consistent,

Acked-by: Rob Herring <robh@...nel.org>