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João Paulo
Hi Paulo,
Can you please try to add the patch that I have shared in the below thread and see if you are able to play and record without any issues.
We have definitely addressed a lot of DMA related issues and improved the latency in the patch.
Hope this helps.
Best Regards,
Suren
Hi Suren,
We are aware of the patch and it is already in our TI kernel branch, so it doesn't resolve the issue. Our problem arises even before the audio subsystem uses any DMA transaction, during driver probing.
Regards,
João Paulo
Hi Paulo,
Are you able to reproduce the issue only when you have a USB pen drive connected on the system? Or does it happen in any other scenario,
I would like to reproduce this on my AM62x EVM to debug further. Will also check with my team internally.
Please allow me a day or two to respond back.
Best Regards,
Suren
Hi Suren,
Yes, only when the USB pen drive was connected. We might have a solution/workaround, however, we are still testing it too. As soon as I have some more information, I will reply to you here.
Thanks for the help.
Regards,
João Paulo
Hi Paulo,
I am glad you were able to find a solution to the problem. If you can share your patch, I could get it reviewed with our team and see how we can incorporate it in our SDK offering and help the community.
Will for your updates on how the testing goes with the solution/workaround.
Best Regards,
Suren
Hi Suren,
We sent the patch to LKML.
https://lore.kernel.org/lkml/20240417184138.1104774-1-jpaulo.silvagoncalves@gmail.com/
Regards,
João Paulo
Thanks Paulo for the patch.
Will get it reviewed by our SW team as well.
Best Regards,
Suren