Re: [PATCH v2 3/3] arm64: dts: qcom: agatti: Fix IOMMU DT properties

[Dmitry Baryshkov]

On Fri, Jan 16, 2026 at 11:50:04AM +0530, 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>
> Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
> Reviewed-by: Akhil P Oommen <akhilpo@xxxxxxxxxxxxxxxx>
> Signed-off-by: Sumit Garg <sumit.garg@xxxxxxxxxxxxxxxx>
> ---
>  arch/arm64/boot/dts/qcom/agatti.dtsi | 11 +++--------
>  1 file changed, 3 insertions(+), 8 deletions(-)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>


-- 
With best wishes
Dmitry