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

Konrad Dybcio
2024-07-23T11:45:59Z

On 23.07.2024 11:59 AM, Dmitry Baryshkov wrote:
> 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.

Yeah I do trust you Marc that it actually works for you and I'm not
gonna delay this series because of that, but please go ahead and
reboot-loop your board

8998/660 is """famous""" for it's iommu problems

Konrad