* [PATCH 0/3] MT8189 IOMMU SUPPORT
@ 2025-08-07 9:55 zhengnan chen
0 siblings, 0 replies; 2+ messages in thread
From: zhengnan chen @ 2025-08-07 9:55 UTC (permalink / raw)
To: Yong Wu, Joerg Roedel, Will Deacon, Robin Murphy, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Matthias Brugger,
AngeloGioacchino Del Regno
Cc: iommu, linux-mediatek, devicetree, linux-kernel, linux-arm-kernel,
Project_Global_Chrome_Upstream_Group, zhengnan.chen
Based on tag: next-20250806, linux-next/master
This patchset adds MT8189 iommu support.
MT8189 have 3 IOMMU HWs. 1 IOMMU HW is for multimedia,
1 IOMMU HW is for apu(AI processer unit),
and 2 IOMMU HW is for infra-master, like PCIe/USB.
About the INFRA IOMMU, it don't have larbs, the master connects the
iommu directly. It use a independent pgtable, and these two
INFRA IOMMU HW share a pgtable.
In mt8189, the display connect with larb1 and larb2 at the same time.
Thus, we should add link between disp-dev with these two larbs.
The software solutions can be summarized as follows:
1. Add iommu support for mt8189
2. Add a flag DL_WITH_MULTI_LARB to support the HW which connect with
multiple larbs.
zhengnan.chen (3):
dt-bindings: mediatek: mt8189: Add bindings for MM & APU & INFRA IOMMU
iommu/mediatek: Add a flag DL_WITH_MULTI_LARB
iommu/mediatek: Add support for mt8189
.../bindings/iommu/mediatek,iommu.yaml | 7 +
drivers/iommu/mtk_iommu.c | 132 +++++++-
.../memory/mediatek,mt8189-memory-port.h | 283 ++++++++++++++++++
3 files changed, 409 insertions(+), 13 deletions(-)
create mode 100644 include/dt-bindings/memory/mediatek,mt8189-memory-port.h
--
2.46.0
^ permalink raw reply [flat|nested] 2+ messages in thread
* [PATCH 0/3] MT8189 IOMMU SUPPORT
@ 2025-08-07 9:57 zhengnan chen
0 siblings, 0 replies; 2+ messages in thread
From: zhengnan chen @ 2025-08-07 9:57 UTC (permalink / raw)
To: Yong Wu, Joerg Roedel, Will Deacon, Robin Murphy, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Matthias Brugger,
AngeloGioacchino Del Regno
Cc: iommu, linux-mediatek, devicetree, linux-kernel, linux-arm-kernel,
Project_Global_Chrome_Upstream_Group, zhengnan chen
Based on tag: next-20250806, linux-next/master
This patchset adds MT8189 iommu support.
MT8189 have 3 IOMMU HWs. 1 IOMMU HW is for multimedia,
1 IOMMU HW is for apu(AI processer unit),
and 2 IOMMU HW is for infra-master, like PCIe/USB.
About the INFRA IOMMU, it don't have larbs, the master connects the
iommu directly. It use a independent pgtable, and these two
INFRA IOMMU HW share a pgtable.
In mt8189, the display connect with larb1 and larb2 at the same time.
Thus, we should add link between disp-dev with these two larbs.
The software solutions can be summarized as follows:
1. Add iommu support for mt8189
2. Add a flag DL_WITH_MULTI_LARB to support the HW which connect with
multiple larbs.
zhengnan.chen (3):
dt-bindings: mediatek: mt8189: Add bindings for MM & APU & INFRA IOMMU
iommu/mediatek: Add a flag DL_WITH_MULTI_LARB
iommu/mediatek: Add support for mt8189
.../bindings/iommu/mediatek,iommu.yaml | 7 +
drivers/iommu/mtk_iommu.c | 132 +++++++-
.../memory/mediatek,mt8189-memory-port.h | 283 ++++++++++++++++++
3 files changed, 409 insertions(+), 13 deletions(-)
create mode 100644 include/dt-bindings/memory/mediatek,mt8189-memory-port.h
--
2.46.0
^ permalink raw reply [flat|nested] 2+ messages in thread
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