From: Rob Herring <robh+dt@kernel.org>
To: Joerg Roedel <joro@8bytes.org>
Cc: devicetree@vger.kernel.org, Mikko Perttunen <cyndis@kapsi.fi>,
"Rafael J. Wysocki" <rafael@kernel.org>,
kwizart@gmail.com,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Will Deacon <will.deacon@arm.com>,
Russell King <linux@armlinux.org.uk>,
dri-devel <dri-devel@lists.freedesktop.org>,
Jon Hunter <jonathanh@nvidia.com>,
linux-tegra@vger.kernel.org,
Linux IOMMU <iommu@lists.linux-foundation.org>,
Thierry Reding <thierry.reding@gmail.com>,
bskeggs@redhat.com, Catalin Marinas <catalin.marinas@arm.com>,
nouveau@lists.freedesktop.org, Dmitry Osipenko <digetx@gmail.com>,
Frank Rowand <frowand.list@gmail.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [RFC PATCH v1 0/6] Resolve unwanted DMA backing with IOMMU
Date: Fri, 27 Jul 2018 11:13:31 -0600 [thread overview]
Message-ID: <CAL_JsqJCE+8hZ-xCajUaW4ScY8VmaZ3nN4U-_AKJL+063sLBpw@mail.gmail.com> (raw)
In-Reply-To: <20180727142000.76zgficpta473snl@8bytes.org>
On Fri, Jul 27, 2018 at 8:20 AM Joerg Roedel <joro@8bytes.org> wrote:
>
> On Fri, Jul 27, 2018 at 05:10:22PM +0300, Dmitry Osipenko wrote:
> > I'm not sure what you guys are meaning by the "firmware", could you elaborate
> > please? Do you mean the Open Firmware and hence the devicetree or what?
>
> Yes, I think the best way to request this is using a device-tree
> property. Letting the device driver request it is definitly a bad idea.
I don't follow why we need a property rather than being implied by the
device's (the GPU) compatible string.
Rob
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next prev parent reply other threads:[~2018-07-27 17:13 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-26 23:16 [RFC PATCH v1 0/6] Resolve unwanted DMA backing with IOMMU Dmitry Osipenko
2018-07-26 23:16 ` [RFC PATCH v1 1/6] driver core: Add option for disabling of backing devices DMA " Dmitry Osipenko
2018-07-26 23:16 ` [RFC PATCH v1 5/6] drm/nouveau: tegra: Universally avoid implicit DMA backing " Dmitry Osipenko
[not found] ` <20180726231624.21084-1-digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-07-26 23:16 ` [RFC PATCH v1 2/6] of/device: Don't back devices DMA with IOMMU if that's undesired by driver Dmitry Osipenko
2018-07-26 23:16 ` [RFC PATCH v1 3/6] drm/tegra: Avoid implicit DMA backing with IOMMU Dmitry Osipenko
2018-07-26 23:16 ` [RFC PATCH v1 4/6] gpu: host1x: " Dmitry Osipenko
2018-07-26 23:16 ` [RFC PATCH v1 6/6] Revert "drm/nouveau: tegra: Detach from ARM DMA/IOMMU mapping" Dmitry Osipenko
2018-07-27 8:25 ` [RFC PATCH v1 0/6] Resolve unwanted DMA backing with IOMMU Joerg Roedel
2018-07-27 9:03 ` Will Deacon
[not found] ` <20180727090328.GH28088-5wv7dgnIgG8@public.gmane.org>
2018-07-27 14:10 ` Dmitry Osipenko
2018-07-27 14:20 ` Joerg Roedel
2018-07-27 17:13 ` Rob Herring [this message]
2018-07-27 18:31 ` Joerg Roedel
[not found] ` <20180727183134.GD6738-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2018-07-27 20:02 ` Dmitry Osipenko
2018-07-27 16:02 ` Robin Murphy
[not found] ` <daadd395-dcb7-9505-f171-0fcc28570301-5wv7dgnIgG8@public.gmane.org>
2018-07-27 17:03 ` Jordan Crouse
[not found] ` <20180727170326.GA21283-9PYrDHPZ2Orvke4nUoYGnHL1okKdlPRT@public.gmane.org>
2018-07-27 17:16 ` Dmitry Osipenko
2018-07-28 11:40 ` Dmitry Osipenko
2018-08-02 18:24 ` Dmitry Osipenko
2018-08-03 15:43 ` Robin Murphy
2018-08-03 17:00 ` Jordan Crouse
2018-08-15 19:56 ` Dmitry Osipenko
2018-08-16 17:23 ` Robin Murphy
[not found] ` <afecce46-96d2-9688-30b4-0a3f17a651d3-5wv7dgnIgG8@public.gmane.org>
2018-09-20 17:09 ` Dmitry Osipenko
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