On Wed, 30 Jun 2021 10:34:41 +0800, Yong Wu wrote: > This patch adds descriptions for mt8195 IOMMU which also use ARM > Short-Descriptor translation table format. > > In mt8195, there are two smi-common HW and IOMMU, one is for vdo(video > output), the other is for vpp(video processing pipe). They connects > with different smi-larbs, then some setting(larbid_remap) is different. > Differentiate them with the compatible string. > > Something like this: > > IOMMU(VDO) IOMMU(VPP) > | | > SMI_COMMON_VDO SMI_COMMON_VPP > --------------- ---------------- > | | ... | | ... > larb0 larb2 ... larb1 larb3 ... > > Another change is that we have a new IOMMU that is for infra master like > PCIe and USB. The infra master don't have the larb and ports, thus we > rename the port header file to mt8195-memory-port.h rather than > mt8195-larb-port.h. > > Also, the IOMMU is not only for MM, thus, we don't call it "m4u" which > means "MultiMedia Memory Management UNIT". thus, use the "iommu" as the > compatiable string. > > Signed-off-by: Yong Wu <yong.wu@xxxxxxxxxxxx> > --- > .../bindings/iommu/mediatek,iommu.yaml | 7 + > .../dt-bindings/memory/mt8195-memory-port.h | 390 ++++++++++++++++++ > 2 files changed, 397 insertions(+) > create mode 100644 include/dt-bindings/memory/mt8195-memory-port.h > Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
