Re: [PATCH 1/2] arm64: dts: qcom: agatti: Fix IOMMU DT properties

[Konrad Dybcio]

On 12/29/25 8:12 AM, Sumit Garg wrote:
> From: Sumit Garg <sumit.garg@xxxxxxxxxxxxxxxx>
> 
> Fix IOMMU DT propeties for GPU, display and video peripherals via
> dropping SMMU stream IDs which relates to secure context bank.
> 
> This problem only surfaced when the Gunyah based firmware stack is
> ported on Agatti replacing the legacy QHEE based firmware stack. Assigning
> Linux kernel (HLOS) VMID to secure context bank stream IDs is treated
> as a fault by Gunyah hypervisor which were previously ignored by QHEE
> hypervisor.
> 
> The DT changes should be backwards compatible with legacy QHEE based
> firmware stack too.
> 
> Suggested-by: Prakash Gupta <guptap@xxxxxxxxxxxxxxxx>
> Signed-off-by: Sumit Garg <sumit.garg@xxxxxxxxxxxxxxxx>
> ---

This will need to be resolved by something like iommu-map anyway

Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>

Konrad