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

[Jon Hunter <jonathanh@nvidia.com>]

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@nvidia.com>
>> ---
>>   .../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@nvidia.com>
>>     - Rajesh Gumasta <rgumasta@nvidia.com>
>> +  - Akhil R <akhilrajeev@nvidia.com>
> 
> 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

-- 
nvpublic