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Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.2.0 Subject: Re: [PATCH v2 3/3] iommu/mediatek: Add MT8188 IOMMU Support Content-Language: en-US To: "Chengci.Xu" , Yong Wu , Joerg Roedel , Will Deacon , Robin Murphy , Rob Herring , Krzysztof Kozlowski , Matthias Brugger Cc: iommu@lists.linux.dev, linux-mediatek@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Project_Global_Chrome_Upstream_Group@mediatek.com References: <20220831125502.7818-1-chengci.xu@mediatek.com> <20220831125502.7818-4-chengci.xu@mediatek.com> From: AngeloGioacchino Del Regno In-Reply-To: <20220831125502.7818-4-chengci.xu@mediatek.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220902_020448_538865_04492A32 X-CRM114-Status: GOOD ( 17.39 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Il 31/08/22 14:55, Chengci.Xu ha scritto: > MT8188 has 3 IOMMU, containing 2 MM IOMMUs, one is for vdo, the other > is for vpp. and 1 INFRA IOMMU. > > Signed-off-by: Chengci.Xu > --- > drivers/iommu/mtk_iommu.c | 48 +++++++++++++++++++++++++++++++++++++++ > 1 file changed, 48 insertions(+) > > diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c > index 6fe780783ec8..98c2eae5229e 100644 > --- a/drivers/iommu/mtk_iommu.c > +++ b/drivers/iommu/mtk_iommu.c > @@ -164,6 +164,7 @@ enum mtk_iommu_plat { > M4U_MT8173, > M4U_MT8183, > M4U_MT8186, > + M4U_MT8188, > M4U_MT8192, > M4U_MT8195, > }; > @@ -1479,6 +1480,50 @@ static const struct mtk_iommu_plat_data mt8186_data_mm = { > .iova_region_nr = ARRAY_SIZE(mt8192_multi_dom), > }; > > +static const struct mtk_iommu_plat_data mt8188_data_infra = { > + .m4u_plat = M4U_MT8188, > + .flags = WR_THROT_EN | DCM_DISABLE | STD_AXI_MODE | PM_CLK_AO | > + MTK_IOMMU_TYPE_INFRA | IFA_IOMMU_PCIE_SUPPORT | > + CFG_IFA_MASTER_IN_ATF, > + .pericfg_comp_str = "mediatek,mt8188-pericfg_ao", pericfg_comp_str is used only for IOMMU enable from Linux, but MT8188 enables it with a SMC command, so this is unused. Please drop it. > + .inv_sel_reg = REG_MMU_INV_SEL_GEN2, > + .banks_num = 1, > + .banks_enable = {true}, > + .iova_region = single_domain, > + .iova_region_nr = ARRAY_SIZE(single_domain), > +}; > + Regards, Angelo