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relsaar's avatar
relsaar
Icon for New Contributor rankNew Contributor
5 years ago

Aria 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...
Deshi_Intel's avatar
Deshi_Intel
Icon for Regular Contributor rankRegular Contributor
5 years ago

Hi,


Next let's discuss about your MSA log file

  • May I know this MSA log file is result output from AV starter kit board or your own custom board ? I presume it's AV starter kit board result ?
  • From the MSA log file, you can see that the BER rate is pretty bad for all lanes.
    • If you are using AV starter kit board then byright your board signal integrity is good. It shouldn't be that bad unless there is some issue with your board or the Bitec daughter card itself
    • Ensure the Bitec daughter card is tightly connect to the board and the AV starter kit board is set with all default switch setting
    • Else you can also try with the sof file that I attached in previous post
    • You can also change DP cable or switch to test out other GPU since you already have golden ref design and board.
    • Pls try out lower video resolution as well
    • Another option is to change DP IP bit per colour (bpc) setting to either 8 to 10 to try out
  • Else if the MSA log is from your own custom board then you know that your board SI is pretty bad
    • Then you will need to review your board SI issue accordingly


Thanks.


Regards,

dlim


relsaar's avatar
relsaar
Icon for New Contributor rankNew Contributor
5 years ago

Hi,

In my priveouse post I was referring to the av_sk_4k.

I programed the sof file you sent and got the same results:

LEDs in on state: D21, D22, D23, D24, D12, D15

LED D20 - is bilnking

LCD show message "Not Connected"

Cable were tested OK from my PC to the monitor, all the av sk SW setting are default and similar to page 18#.

Checked with alternative GPU and also with 800X600 resolusion and with color depth =8 bit and it still looks similar.

Bitec daughter displayport card is tightly secured to the AV SK with screws.

when I'm not loading the NIOS (as you suggested) I can't get the MSA LOG - please see attached terminal capture.

=Can I assume there is a failure in the hardware?

Please advise how can we tell if the failure is on the Arria V SK or at the Bitec daughter displayport card?

thanks

Ariel Saar

  • relsaar's avatar
    relsaar
    Icon for New Contributor rankNew Contributor
    5 years ago

    Hi

    I can see that the Bitec Displayport can also be Compatibility with:
    •Cyclone V
    •Arria II and V
    •Stratix I, IV and V

    we should also have Stratix IV and I get other evaluation kits as a loan - do you have an example design sof file for all of those cards?

    Thanks

    Ariel