On Fri, Jun 2, 2023 at 5:03 PM Yong Wu <yong.wu@xxxxxxxxxxxx> wrote: > > MT8188 have 3 IOMMU HWs. 2 IOMMU HW is for multimedia, and 1 IOMMU HW > is for infra-master, like PCIe. > > About the 2 MM IOMMU HW, the connection could be something like this: > > IOMMU(VDO) IOMMU(VPP) > | | > SMI_COMMON(VDO) SMI_COMMON(VPP) > --------------- ---------------- > | | ... | | ... > larb0 larb2 ... larb1 larb3 ... > > INFRA IOMMU does not have SMI, the master connects to IOMMU directly. > > Although multiple banks supported in MT8188, we only use one of them, > which means PCIe is put in bank0 of INFRA IOMMU. > > So we have two pgtable for MT8188, specifically, these two MM IOMMU HW > share a pgtable while INFRA IOMMU HW use a independent pgtable. > > Another change is that we add some SMC command for INFRA master to > enable INFRA IOMMU in ATF considering security concerns. > > We also adjust the flow of mtk_iommu_config to reduce indention. A friendly ping - this series was reviewed, but I'm not sure if it's still on the radar today. This can be cleanly applied on top of next-20230725. To give more confidence, I also tested the basic multimedia and infra functionalities on my MT8188 with this series, so Tested-by: Fei Shao <fshao@xxxxxxxxxxxx> to the entire v12 series. Regards, Fei
