Bitrate 1 Mbit / 10 Mbit fails with the master
I experience problem with data bitrate higher than 8 Mbit/s for longer time on PCI express card and I have tested code on Zynq some time ago and I think that the limitation has been exactly the same. Commit 1c639ac6 was tested on PCI express card. The measured propagation delay is 10 on the given HW. It has been 11 at least sometimes with design working with 1Mb/s + 10Mb/s.