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Forum Post: RE: Problem of M3 video(codec) crash.

1.First share the console logs with remote_debug_client.out running to identify the source of the problem.

H264 bitstream may not be sent if

1. VPSS M3 crash due to h/w or s/w exception. If VPSS crash happens your display should be blanked out.

2. Video M3 crash due to h/w or s/w exception

3. HDVICP crash

4. HDVPSS hang.

2.If you don't see any h/w or s/w exception msg in the log when hang occurs collect logs of Vsys_printDetailedStatistics and Vsys_printBufferStatistics collected atleast 2 times with 1 min interval.

3. WHen hang occurs try stopping and deleting all the links and share logs if you are able to do this.You should try this if it is not h/w or s/w exception.

With above 2 logs it is possible to get some idea of what the real issue is.After this the rootcause has to be debugged.

The common rootcauses  for crash we have seen are:

1. S/W issue with customer application causing memory corruption.

2. H/w issue related to AVS power supply on custom board.

3. H/w issue related to DDR instability on custom board.

                - Confirm you have done DDR byte wise s/w leveling on your board.

                - Monitor the constant power supply line to DDR on your board for glitches.

                - Review your board layout confirms to TI layout guidelines exactly and there is no violation.

You can attempt further debug for rootcause once reason for crash is first determined.

 


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