Re: [PATCH v9 1/7] dt-bindings: mediatek: mt8188: Add binding for MM & INFRA IOMMU

From: Krzysztof Kozlowski
Date: Fri Mar 17 2023 - 05:01:03 EST


On 17/03/2023 09:55, Yong Wu wrote:
> From: "Chengci.Xu" <chengci.xu@xxxxxxxxxxxx>
>
> Add 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 <chengci.xu@xxxxxxxxxxxx>
> Signed-off-by: Yong Wu <yong.wu@xxxxxxxxxxxx>
> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
> ---
> .../bindings/iommu/mediatek,iommu.yaml | 12 +-
> .../memory/mediatek,mt8188-memory-port.h | 489 ++++++++++++++++++
> 2 files changed, 500 insertions(+), 1 deletion(-)


Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>

Best regards,
Krzysztof