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

[Marc Gonzalez]

On 23/07/2024 13:45, Konrad Dybcio wrote:

> On 23.07.2024 11:59 AM, Dmitry Baryshkov wrote:
> 
>> On Tue, 23 Jul 2024 at 12:48, Marc Gonzalez 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, please.
> 
> 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

[   20.501062] arm-smmu 16c0000.iommu: Unhandled context fault: fsr=0x402, iova=0x00000000, fsynr=0x1, cbfrsynra=0x1900, cb=0

I get the above warning pretty reliably.
I don't think it's related to the issue(s) you mentioned.
System just keeps plodding along.

Regards