linux-kernel - Re: [PATCH v7 09/14] iommu/mediatek: Set dma

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Message-ID: <5697b1ba-262d-34d9-b853-a6c959fc29fd@collabora.com>
Date:   Tue, 11 Apr 2023 12:13:17 +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>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>
Cc:     Will Deacon <will@...nel.org>, Robin Murphy <robin.murphy@....com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Hans Verkuil <hverkuil@...all.nl>, nfraprado@...labora.com,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        iommu@...ts.linux.dev, mingyuan.ma@...iatek.com,
        yf.wang@...iatek.com, jianjiao.zeng@...iatek.com,
        Yunfei Dong <yunfei.dong@...iatek.com>,
        kyrie wu <kyrie.wu@...iatek.corp-partner.google.com>,
        chengci.xu@...iatek.com, youlin.pei@...iatek.com,
        anan.sun@...iatek.com
Subject: Re: [PATCH v7 09/14] iommu/mediatek: Set dma_mask for the master
 devices

Il 11/04/23 11:31, Yong Wu ha scritto:
> MediaTek iommu arranges dma ranges for all the masters, this patch is to
> help them set dma mask. This is to avoid each master setting their own
> mask, but also to avoid a real issue, such as JPEG uses
> "mediatek,mtk-jpgenc" for 2701/8183/8186/8188, then JPEG could ignore its
> different dma_mask in different SoC to achieve common code.
> 
> Signed-off-by: Yong Wu <yong.wu@...iatek.com>

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