The DisplayPort v3.2 Rev 8 and later patch includes an updated AUX state machine for both the source and sink core. The updated AUX state machine will look specifically for 26 to 32 consecutive transitions in the SYNC word followed by the START code (2 us high and 2 us low). The AUX transaction will be processed by the core after a successful SYNC word has been detected.
For 7 series devices, it is recommended to upgrade to the latest core release available in Vivado tool. This issue was resolved in the DisplayPort v4.1 core.
The DisplayPort v3.2 patch can be found in (Xilinx Answer 53422).
Source core should be at revision 4 or later.
i.e. The VERSION_REGISTER (0x0F8) should read 03020400.
Sink core should be at revision 8 or later.
i.e. The VERSION_REGISTER (0x0F8) should read 03020800.
9/9/2013 - Initial Release