Re: [PATCH 1/2] iommu/qcom: Use identity domain for GPU and display

[Rob Clark]

On Fri, Oct 30, 2026 at 1:35 AM Konrad Dybcio
<konrad.dybcio@xxxxxxxxxxxxxxxx> wrote:
>
> On 10/29/26 10:23 PM, Rob Clark wrote:
> > Similar to commit 0e764a01015d ("iommu/arm-smmu: Allow client devices to
> > select direct mapping") for arm-smmu-qcom, match GPU and display compat
> > strings to pick identity domain time.
> >
> > The drm/msm driver attaches it's own domain, which it manages directly,
> > so we don't want an iommu managed domain interfering.
> >
> > Signed-off-by: Rob Clark <robin.clark@xxxxxxxxxxxxxxxx>
> > ---
>
> fwiw I'm not sure we have any devices with this driver and mdp4
> but anyway

probably true of arm-smmu-qcom as well ;-)

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