Re: [PATCH 00/12] iommu: qcom_iommu: implement support for instances on MSM8974

From: Michał Szczepaniak

Date: Thu Oct 15 2026 - 16:00:04 EST


On 09/08/2026 22:15, Dmitry Baryshkov wrote:

> Qualcomm MSM8974 platform has five SMMU instances, used by display, GPU,
> Venus, VFE (camera) and JPEG encoder. Each of them follows ARM SMMU v1

Hi Dmitry,

sorry to barge in but I just wanted to let you know that I 
gave this series a try on the Motorola Moto X 2014 (victara,
MSM8974PRO-AC, PM8941 + PM8841) on top of v7.3-rc7 with the
msm8974-mainline patches and "clk: qcom: mmcc-msm8974: add
GENPD_FLAG_NO_STAY_ON".

Display (command mode panel) works through the MDP IOMMU. The GPU
works too: the Sailfish OS compositor renders on freedreno (Mesa
25.1.8) through the GPU IOMMU, and I don't see the reboot reported
on FP2. I tried 3D acceleration, and it works without issues.

Hope that helps!

Thanks,
Michał