[PATCH v2 1/4] dt-bindings: arm-smmu: Document nvidia,memory-controller property

Will Deacon will at kernel.org
Wed Mar 9 04:43:45 PST 2022


On Tue, Mar 08, 2022 at 04:59:05PM +0100, Thierry Reding wrote:
> On Wed, Feb 16, 2022 at 02:25:20PM +0100, Thierry Reding wrote:
> > On Thu, Dec 09, 2021 at 05:35:57PM +0100, Thierry Reding wrote:
> > > From: Thierry Reding <treding at nvidia.com>
> > > 
> > > On NVIDIA SoC's the ARM SMMU needs to interact with the memory
> > > controller in order to map memory clients to the corresponding stream
> > > IDs. Document how the nvidia,memory-controller property can be used to
> > > achieve this.
> > > 
> > > Note that this is a backwards-incompatible change that is, however,
> > > necessary to ensure correctness. Without the new property, most of the
> > > devices would still work but it is not guaranteed that all will.
> > > 
> > > Signed-off-by: Thierry Reding <treding at nvidia.com>
> > > ---
> > > Changes in v2:
> > > - clarify why the new nvidia,memory-controller property is required
> > > 
> > >  .../devicetree/bindings/iommu/arm,smmu.yaml     | 17 +++++++++++++++++
> > >  1 file changed, 17 insertions(+)
> > 
> > Hi Joerg,
> > 
> > can you pick up patches 1-3 of this series? DT bindings have been
> > reviewed by Rob and Will acked the ARM SMMU change. I can take the
> > device tree changes (patch 4) through the Tegra tree.
> 
> Will, Robin, Joerg,
> 
> I haven't seen this show up in linux-next yet but was hoping to see this
> go in for v5.18. Anything I can do to help this move along?

Hmm, I guess I could've taken 1-3, but after your message to Joerg I just
Acked the driver change on the assumption that was a dependency or
something.

In any case, I'm happy for Joerg to pick these three up directly if he has
time this late in the cycle.

Will



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