Re: [PATCH v5 4/4] arm64: dts: qcom: add HDMI nodes for msm8998

Dmitry Baryshkov
2024-07-23T10:00:02Z

On Tue, 23 Jul 2024 at 12:48, Marc Gonzalez <mgonzalez@freebox.fr> wrote:
>
> On 16/07/2024 18:37, Dmitry Baryshkov wrote:
>
> > No, that's fine. It is the SMMU issue that Konrad has been asking you
> > to take a look at.
>
> Context:
>
> [ 4.911422] arm-smmu cd00000.iommu: FSR = 00000402 [Format=2 TF], SID=0x0
> [ 4.923353] arm-smmu cd00000.iommu: FSYNR0 = 00000021 [S1CBNDX=0 PNU PLVL=1]
> [ 4.927893] arm-smmu cd00000.iommu: FSR = 00000402 [Format=2 TF], SID=0x0
> [ 4.941928] arm-smmu cd00000.iommu: FSYNR0 = 00000021 [S1CBNDX=0 PNU PLVL=1]
> [ 4.944438] arm-smmu cd00000.iommu: FSR = 00000402 [Format=2 TF], SID=0x0
> [ 4.956013] arm-smmu cd00000.iommu: FSYNR0 = 00000021 [S1CBNDX=0 PNU PLVL=1]
> [ 4.961055] arm-smmu cd00000.iommu: FSR = 00000402 [Format=2 TF], SID=0x0
> [ 4.974565] arm-smmu cd00000.iommu: FSYNR0 = 00000021 [S1CBNDX=0 PNU PLVL=1]
> [ 4.977628] arm-smmu cd00000.iommu: FSR = 00000402 [Format=2 TF], SID=0x0
> [ 4.989670] arm-smmu cd00000.iommu: FSYNR0 = 00000021 [S1CBNDX=0 PNU PLVL=1]
>
>
> As I mentioned, I don't think I've ever seen issues from cd00000.iommu
> on my board.

Interestingly enough, I can also see iommu errors during WiFi startup
/ shutdown on msm8998 / miix630. This leads me to thinking that it
well might be that there is a missing quirk in the iommu driver.

>
> I can test a reboot loop for a few hours, to see if anything shows up.

Yes, pleas.

--
With best wishes
Dmitry