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i.MX6 FEC fifo overrun

Question asked by torus1000 on Nov 29, 2016
Latest reply on Dec 8, 2016 by Wigros Sun



I used yocto L3.14.38 for i.MX6Q-SabreSD then measured FEC performance with iperf command.

I believed FEC patch already applied so fifo overrun suppressed with proper pause frames.
But FEC performance looked far poor than 450Mpbs and fifo overrun continuously occurred.


Is there any control bit to ignore pause frame? (Which registers should I check first?)

How can I improve FEC performance to avoid overrun?