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Message-ID: <0b5b1d9e302f70df2e6ea207a88e7483eabd469c.camel@mediatek.com>
Date: Mon, 21 Nov 2022 05:17:08 +0000
From: Yong Wu (吴勇) <Yong.Wu@...iatek.com>
To: "robin.murphy@....com" <robin.murphy@....com>,
"joro@...tes.org" <joro@...tes.org>,
"will@...nel.org" <will@...nel.org>,
Chengci Xu (许承赐)
<Chengci.Xu@...iatek.com>,
"matthias.bgg@...il.com" <matthias.bgg@...il.com>,
"robh+dt@...nel.org" <robh+dt@...nel.org>,
"krzysztof.kozlowski+dt@...aro.org"
<krzysztof.kozlowski+dt@...aro.org>
CC: "linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-mediatek@...ts.infradead.org"
<linux-mediatek@...ts.infradead.org>,
"krzysztof.kozlowski@...aro.org" <krzysztof.kozlowski@...aro.org>,
Project_Global_Chrome_Upstream_Group
<Project_Global_Chrome_Upstream_Group@...iatek.com>,
"iommu@...ts.linux.dev" <iommu@...ts.linux.dev>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH v4 1/4] dt-bindings: mediatek: mt8188: Add binding for MM
& INFRA IOMMU
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 <chengci.xu@...iatek.com>
> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> ---
> .../bindings/iommu/mediatek,iommu.yaml | 12 +-
> .../memory/mediatek,mt8188-memory-port.h | 482
> ++++++++++++++++++
Reviewed-by: Yong Wu <yong.wu@...iatek.com>
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