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BBone: Audio (McASP) performance problems

Hi,

I'm working with McASP on Beaglbone and using TDM8 to transfer audio.

What I have seen is that when I use try to record 8 channels there are a lot of data overruns. I have only one TX line and one RX line.

Which parameter can be tweaked to improve this performance?
Currently, McASP is using databus (L3 memory as buffer).

Any suggestions?

-Prasant