linux-kernel - Re: [PATCH v5 0/6] MT8173 IOMMU SUPPORT

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Date:	Thu, 22 Oct 2015 12:40:02 +0800
From:	Yong Wu <yong.wu@...iatek.com>
To:	Joerg Roedel <joro@...tes.org>,
	Matthias Brugger <matthias.bgg@...il.com>, <arnd@...db.de>
CC:	Thierry Reding <treding@...dia.com>,
	Mark Rutland <mark.rutland@....com>,
	Robin Murphy <robin.murphy@....com>,
	Will Deacon <will.deacon@....com>,
	Daniel Kurtz <djkurtz@...gle.com>,
	Tomasz Figa <tfiga@...gle.com>,
	Lucas Stach <l.stach@...gutronix.de>,
	Rob Herring <robh+dt@...nel.org>,
	Catalin Marinas <catalin.marinas@....com>,
	<linux-mediatek@...ts.infradead.org>,
	Sasha Hauer <kernel@...gutronix.de>,
	<srv_heupstream@...iatek.com>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<iommu@...ts.linux-foundation.org>, <pebolle@...cali.nl>,
	<mitchelh@...eaurora.org>, Sricharan R <sricharan@...eaurora.org>
Subject: Re: [PATCH v5 0/6] MT8173 IOMMU SUPPORT

On Wed, 2015-10-14 at 14:56 +0200, Joerg Roedel wrote:
> On Fri, Oct 09, 2015 at 10:23:02AM +0800, Yong Wu wrote:
> > Yong Wu (6):
> >   dt-bindings: iommu: Add binding for mediatek IOMMU
> >   dt-bindings: mediatek: Add smi dts binding
> >   iommu: add ARM short descriptor page table allocator
> >   memory: mediatek: Add SMI driver
> >   iommu/mediatek: Add mt8173 IOMMU driver
> >   dts: mt8173: Add iommu/smi nodes for mt8173
> > 
> >  .../devicetree/bindings/iommu/mediatek,iommu.txt   |  61 ++
> >  .../memory-controllers/mediatek,smi-larb.txt       |  25 +
> >  .../bindings/memory-controllers/mediatek,smi.txt   |  24 +
> >  arch/arm64/boot/dts/mediatek/mt8173.dtsi           |  81 ++
> >  drivers/iommu/Kconfig                              |  33 +
> >  drivers/iommu/Makefile                             |   2 +
> >  drivers/iommu/io-pgtable-arm-short.c               | 827 +++++++++++++++++++++
> >  drivers/iommu/io-pgtable-arm.c                     |   3 -
> >  drivers/iommu/io-pgtable.c                         |   3 +
> >  drivers/iommu/io-pgtable.h                         |  18 +-
> >  drivers/iommu/mtk_iommu.c                          | 767 +++++++++++++++++++
> >  drivers/memory/Kconfig                             |   8 +
> >  drivers/memory/Makefile                            |   1 +
> >  drivers/memory/mtk-smi.c                           | 274 +++++++
> >  include/dt-bindings/memory/mt8173-larb-port.h      | 105 +++
> >  include/soc/mediatek/smi.h                         |  60 ++
> 
> So this contains not only IOMMU code. Are the patches dependent on each
> other or can the iommu parts be merged independently?
> 
> 	Joerg
> 
Hi Joerg,
     Sorry for reply late.
     The ARM short descriptor is independent. This one can be merged
independently.

     But the mtk-iommu depend on the drivers/memory/mtk-smi.c(mtk-iommu
has called a function of the mtk-smi).
     So if there is dependence here, How should we do to merge them?


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