Re: [PATCH v4 1/4] dt-bindings: mediatek: mt8188: Add binding for MM & INFRA IOMMU
From: Yong Wu (吴勇) <Yong.Wu@mediatek.com>
Date: 2022-11-21 05:17:29
Also in:
linux-devicetree, linux-iommu, linux-mediatek, lkml
On Tue, 2022-10-18 at 14:42 +0800, Chengci.Xu wrote:
Adds descriptions for mt8188 IOMMU which also use ARM Short-
Descriptor
translation table format.
In mt8188, 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 ...
We also have an IOMMU that is for infra master like PCIe.
And infra master don't have the larb and ports.
Signed-off-by: Chengci.Xu <redacted>
Acked-by: Krzysztof Kozlowski <redacted>
---
.../bindings/iommu/mediatek,iommu.yaml | 12 +-
.../memory/mediatek,mt8188-memory-port.h | 482
++++++++++++++++++Reviewed-by: Yong Wu <yong.wu@mediatek.com> _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel