From: Rob Herring <robh@kernel.org>
To: Chao Hao <chao.hao@mediatek.com>
Cc: Joerg Roedel <joro@8bytes.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
iommu@lists.linux-foundation.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org, wsd_upstream@mediatek.com,
Jun Yan <jun.yan@mediatek.com>,
Cui Zhang <cui.zhang@mediatek.com>,
Guangming Cao <guangming.cao@mediatek.com>,
Yong Wu <yong.wu@mediatek.com>, Anan Sun <anan.sun@mediatek.com>,
Miles Chen <miles.chen@mediatek.com>,
Chao Hao <chao.hao@mediatek.com>
Subject: Re: [RESEND,PATCH 01/13] dt-bindings: mediatek: Add bindings for MT6779
Date: Wed, 6 Nov 2019 17:40:20 -0600 [thread overview]
Message-ID: <20191106234020.GA19463@bogus> (raw)
In-Reply-To: <20191104115238.2394-2-chao.hao@mediatek.com>
On Mon, 4 Nov 2019 19:52:26 +0800, Chao Hao wrote:
> This patch adds description for MT6779 IOMMU.
>
> MT6779 has two iommus, they are MM_IOMMU and APU_IOMMU which
> use ARM Short-Descriptor translation format.
>
> The MT6779 IOMMU hardware diagram is as below, it is only a brief
> diagram about iommu, it don't focus on the part of smi_larb, so
> I don't describe the smi_larb detailedly.
>
> EMI
> |
> --------------------------------------
> | |
> MM_IOMMU APU_IOMMU
> | |
> SMI_COMMOM----------- APU_BUS
> | | |
> SMI_LARB(0~11) SMI_LARB12(FAKE) SMI_LARB13(FAKE)
> | | |
> | | --------------
> | | | | |
> Multimedia engine CCU VPU MDLA EMDA
>
> All the connections are hardware fixed, software can not adjust it.
>
> >From the diagram above, MM_IOMMU provides mapping for multimedia engine,
> but CCU is connected with smi_common directly, we can take them as larb12.
> APU_IOMMU provides mapping for APU engine, we can take them larb13.
> Larb12 and Larb13 are fake larbs.
>
> Signed-off-by: Chao Hao <chao.hao@mediatek.com>
> ---
> .../bindings/iommu/mediatek,iommu.txt | 2 +
> include/dt-bindings/memory/mt6779-larb-port.h | 217 ++++++++++++++++++
> 2 files changed, 219 insertions(+)
> create mode 100644 include/dt-bindings/memory/mt6779-larb-port.h
>
Reviewed-by: Rob Herring <robh@kernel.org>
next prev parent reply other threads:[~2019-11-06 23:40 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-04 11:52 [RESEND,PATCH 00/13] MT6779 IOMMU SUPPORT Chao Hao
2019-11-04 11:52 ` [RESEND,PATCH 01/13] dt-bindings: mediatek: Add bindings for MT6779 Chao Hao
2019-11-06 23:40 ` Rob Herring [this message]
2019-12-16 12:05 ` Yong Wu
2019-12-20 11:01 ` chao hao
2019-11-04 11:52 ` [RESEND,PATCH 02/13] iommu/mediatek: Add mt6779 IOMMU basic support Chao Hao
2019-12-16 12:07 ` Yong Wu
2019-12-25 6:58 ` chao hao
2019-11-04 11:52 ` [RESEND,PATCH 03/13] iommu/mediatek: Add mtk_iommu_pgtable structure Chao Hao
2019-12-16 12:13 ` Yong Wu
2019-12-31 9:39 ` chao hao
2020-02-15 12:17 ` Yong Wu
2020-02-25 7:25 ` chao hao
2020-02-26 6:36 ` chao hao
2019-11-04 11:52 ` [RESEND,PATCH 04/13] iommu/mediatek: Remove mtk_iommu_domain_finalise Chao Hao
2019-11-04 11:52 ` [RESEND,PATCH 05/13] iommu/mediatek: Remove pgtable info in mtk_iommu_domain Chao Hao
2019-11-04 11:52 ` [RESEND,PATCH 06/13] iommu/mediatek: Change get the way of m4u_group Chao Hao
2019-11-04 11:52 ` [RESEND,PATCH 07/13] iommu/mediatek: Add smi_larb info about device Chao Hao
2019-11-04 11:52 ` [RESEND,PATCH 08/13] iommu/mediatek: Add mtk_domain_data structure Chao Hao
2019-11-04 11:52 ` [RESEND,PATCH 09/13] iommu/mediatek: Remove the usage of m4u_dom variable Chao Hao
2019-11-04 11:52 ` [RESEND,PATCH 10/13] iommu/mediatek: Remove mtk_iommu_get_m4u_data api Chao Hao
2019-11-04 11:52 ` [RESEND,PATCH 11/13] iommu/mediatek: Add iova reserved function Chao Hao
2019-11-04 11:52 ` [RESEND,PATCH 12/13] iommu/mediatek: Change single domain to multiple domains Chao Hao
2019-11-04 11:52 ` [RESEND, PATCH 13/13] iommu/mediatek: Add multiple mtk_iommu_domain support for mt6779 Chao Hao
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