Forum Discussion
relsaar
New Contributor
5 years agoAria V Display Port core sometimes disconnected
Hi All
We have a PCB board we designed with AMD 8860 GPU that sends DP video to Aria V Display Port core (Qsys). In some of our boards we sometimes have DP connection issues.
The video signal goe...
relsaar
New Contributor
5 years agoHi,
I checked disp_err and code_err signals on a system that never had msa_lock toggles and saw the same toggles on those signals (similar to the photo I attached before)
also we only use one lane of display port but in the signalTap all 4 of them are noisy. it looks like we can't trust this BER detection/debug signal.
I tried to connect disp_err or code_err as enable of a counter to quantify the BER and check if the the first board has more toggles on that indicates higher BER but unfortunately those signals comes from encrypted module and can't be used.
thanks
Ariel Saar
Deshi_Intel
Regular Contributor
5 years ago
MSA log dump example