Critical Issue
Description
The DQS clock buffer location for the UniPHY can cause hold time violations when placed suboptimally. The Quartus II software may suboptimally place the DQS clock buffer on a global or dual-regional clock after reentering the FPGA, so that it can be routed to the write side of the read capture FIFO buffer.
Resolution
Create a location assignment on the buffer to the same edge
as the memory interface (for example EDGE_BOTTOM).