linux-kernel - Re: [PATCH v3 21/33] iommu/mediatek: Add infra iommu support

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Message-ID: <f1e93e9e-cc89-146a-410f-13ea94445d31@collabora.com>
Date:   Tue, 4 Jan 2022 16:54:51 +0100
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Yong Wu <yong.wu@...iatek.com>, Joerg Roedel <joro@...tes.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Tomasz Figa <tfiga@...omium.org>,
        linux-mediatek@...ts.infradead.org, srv_heupstream@...iatek.com,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        iommu@...ts.linux-foundation.org,
        Hsin-Yi Wang <hsinyi@...omium.org>, youlin.pei@...iatek.com,
        anan.sun@...iatek.com, chao.hao@...iatek.com,
        yen-chang.chen@...iatek.com
Subject: Re: [PATCH v3 21/33] iommu/mediatek: Add infra iommu support

Il 23/09/21 13:58, Yong Wu ha scritto:
> The infra iommu enable bits in mt8195 is in the pericfg register segment,
> use regmap to update it.
> 
> If infra iommu master translation fault, It don't have the larbid/portid,
> thus print out the whole register value.
> 
> Since regmap_update_bits may fail, add return value for mtk_iommu_config.
> 
> Signed-off-by: Yong Wu <yong.wu@...iatek.com>



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