Re: [PATCH v4 00/24] MT8192 IOMMU support

Will Deacon
2020-11-25T12:25:28Z

On Wed, Nov 11, 2020 at 08:38:14PM +0800, Yong Wu wrote:
> This patch mainly adds support for mt8192 Multimedia IOMMU and SMI.
>
> mt8192 also is MTK IOMMU gen2 which uses ARM Short-Descriptor translation
> table format. The M4U-SMI HW diagram is as below:
>
> EMI
> |
> M4U
> |
> ------------
> SMI Common
> ------------
> |
> +-------+------+------+----------------------+-------+
> | | | | ...... | |
> | | | | | |
> larb0 larb1 larb2 larb4 ...... larb19 larb20
> disp0 disp1 mdp vdec IPE IPE
>
> All the connections are HW fixed, SW can NOT adjust it.
>
> Comparing with the preview SoC, this patchset mainly adds two new functions:
> a) add iova 34 bits support.
> b) add multi domains support since several HW has the special iova
> region requirement.
>
> change note:
> v4: a) rebase on v5.10-rc1
> b) Move the smi part to a independent patchset.
> c) Improve v7s code from Robin and Will.
> d) Add a mediatek iommu entry patch in MAINTAINERS.

Please can you post a v5 of this, adding the Acks from v4 and addressing
the build failures reported by the kbuild robot on patch 20?

Thanks,

Will