linux-kernel - Re: [PATCH v4 5/6] iommu/mediatek: Improve safety for mediatek,smi property in larb nodes

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Message-ID: <b681d321-8fc9-90c0-70e7-18d1f970b572@collabora.com>
Date:   Tue, 30 Aug 2022 10:16:02 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Yong Wu <yong.wu@...iatek.com>, Joerg Roedel <joro@...tes.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Will Deacon <will@...nel.org>
Cc:     Robin Murphy <robin.murphy@....com>, iommu@...ts.linux.dev,
        iommu@...ts.linux-foundation.org,
        linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        mingyuan.ma@...iatek.com, yf.wang@...iatek.com,
        libo.kang@...iatek.com, chengci.xu@...iatek.com,
        youlin.pei@...iatek.com, anan.sun@...iatek.com,
        xueqi.zhang@...iatek.com, Guenter Roeck <groeck@...omium.org>,
        Dan Carpenter <dan.carpenter@...cle.com>
Subject: Re: [PATCH v4 5/6] iommu/mediatek: Improve safety for mediatek,smi
 property in larb nodes

Il 24/08/22 08:43, Yong Wu ha scritto:
> No functional change. Just improve safety from dts.
> 
> All the larbs that connect to one IOMMU must connect with the same
> smi-common. This patch checks all the mediatek,smi property for each
> larb, If their mediatek,smi are different, it will return fails.
> Also avoid there is no available smi-larb nodes.
> 
> Suggested-by: Guenter Roeck <groeck@...omium.org>
> Signed-off-by: Yong Wu <yong.wu@...iatek.com>

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