Re: [PATCH 1/8] dt-bindings: dma: nvidia,tegra186-gpc-dma: Add iommu-map property

[Jon Hunter]

On 17/02/2026 19:53, Krzysztof Kozlowski wrote:
> On 17/02/2026 18:34, Akhil R wrote:
> > Add iommu-map property which helps when each channel requires its own
> > stream ID for the transfer. Use iommu-map to specify separate stream
> > ID for each channel. This enables each channel to be in its own iommu
> > domain and keeps the memory isolated from other devices sharing the
> > same DMA controller.
> >
> > Signed-off-by: Akhil R <akhilrajeev@xxxxxxxxxx>
> > ---
> >   .../devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml  | 8 ++++++++
> >   1 file changed, 8 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml b/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml
> > index 0dabe9bbb219..542e9cb9f641 100644
> > --- a/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml
> > +++ b/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml
> > @@ -14,6 +14,7 @@ description: |
> >   maintainers:
> >     - Jon Hunter <jonathanh@xxxxxxxxxx>
> >     - Rajesh Gumasta <rgumasta@xxxxxxxxxx>
> > +  - Akhil R <akhilrajeev@xxxxxxxxxx>
>
> With 4.5 trillion USD capitalization of Nvidia one could assume they can
> spare few resources to test the patch before sending it... instead of
> relying on Rob's and my machines to do that for them.
>
> Expect grumpy review because you do not care about our time.


ACK! We need to do a better job here. I will work with Akhil to improve 
this.

Jon

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nvpublic