linux-kernel - Re: [PATCH v4 12/20] iommu/tegra: gart: Integrate with Memory Controller driver

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Message-ID: <20180925100202.GE7097@ulmo>
Date:   Tue, 25 Sep 2018 12:02:02 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     Joerg Roedel <joro@...tes.org>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Rob Herring <robh+dt@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        iommu@...ts.linux-foundation.org, devicetree@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 12/20] iommu/tegra: gart: Integrate with Memory
 Controller driver

On Mon, Sep 24, 2018 at 09:22:59PM +0300, Dmitry Osipenko wrote:
> On 9/24/18 1:23 PM, Thierry Reding wrote:
> > On Mon, Sep 24, 2018 at 03:41:45AM +0300, Dmitry Osipenko wrote:
> >> The device-tree binding has been changed. There is no separate GART device
> >> anymore, it is squashed into the Memory Controller. Integrate GART module
> >> with the MC in a way it is done for the SMMU of Tegra30+.
> >>
> >> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> >> ---
> >>  drivers/iommu/Kconfig      |  1 +
> >>  drivers/iommu/tegra-gart.c | 98 ++++++++++----------------------------
> >>  drivers/memory/tegra/mc.c  | 41 ++++++++++++++++
> >>  include/soc/tegra/mc.h     | 27 +++++++++++
> >>  4 files changed, 93 insertions(+), 74 deletions(-)
> > 
> > I think this could technically have been two patches, but since they'd
> > have a compile-time dependency either way they need to be applied in the
> > correct order, so some coordination between IOMMU and Tegra trees is
> > going to have to happen anyway and might as well just stick this into a
> > single patch.
> 
> I assume that Joerg will take the whole series once it's ready (no?),
> hence your ACK will be needed here and in other patches.

Yeah, either Joerg takes them all with my Acked-by's or provides his for
the IOMMU bits and I take the batch through the Tegra tree. I don't have
a strong preference.

Thierry

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