Due to a problem in the Archer City Platform (Sapphire Rapids-based CPU platform), you might observe link training failure when programming the SOF image of the Intel Agilex® 7 R-Tile Compute Express Link* (CXL) 1.1/2.0 FPGA IP.
This problem is not planned to be fixed in future releases of the Intel® Quartus® Prime Editon Software because it is a platform problem.
To work around this problem, change the BMC of the Platform to assert the PERST when rebooting the system.