Message-ID: <797dcbef-8485-72cc-4eb5-f58153d147ce@collabora.com>
Date:   Fri, 17 Mar 2023 10:34:29 +0100
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101
 Thunderbird/102.9.0
Subject: Re: [PATCH v9 3/7] iommu/mediatek: Adjust mtk_iommu_config flow
Content-Language: en-US
To:     Yong Wu <yong.wu@mediatek.com>, Joerg Roedel <joro@8bytes.org>,
        Will Deacon <will@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Matthias Brugger <matthias.bgg@gmail.com>
Cc:     Robin Murphy <robin.murphy@arm.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        iommu@lists.linux.dev, linux-mediatek@lists.infradead.org,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, mingyuan.ma@mediatek.com,
        yf.wang@mediatek.com, jianjiao.zeng@mediatek.com,
        chengci.xu@mediatek.com
References: <20230317085541.20447-1-yong.wu@mediatek.com>
 <20230317085541.20447-4-yong.wu@mediatek.com>
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@collabora.com>
In-Reply-To: <20230317085541.20447-4-yong.wu@mediatek.com>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Precedence: bulk

Il 17/03/23 09:55, Yong Wu ha scritto:
> From: "Chengci.Xu" <chengci.xu@mediatek.com>
> 
> If there are many ports in a infra master, current flow will update
> the INFRA register many times. This patch saves all ports to portid_msk
> in the front of mtk_iommu_config(), then update only once for the IOMMU
> configure. After this, we could avoid send too many SMC calls to ATF in
> MT8188.
> 
> Prepare for MT8188, also reduce the indention without functional change.
> 
> Signed-off-by: Chengci.Xu <chengci.xu@mediatek.com>
> Signed-off-by: Yong Wu <yong.wu@mediatek.com>

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