Due to a problem in the Quartus® Prime Pro Edition Software version 24.1 and earlier, you may see unexpected timing paths in the timing report for EMAC clocks when HPS EMAC is routed to FPGA.
Below top entity is helping to understand EMAC clocks, "emac1_gtx_clk" and "user0_clock_clk" used in the design where EMAC1 routed to FPGA:
To workaround this problem, use below SDC contranits:
set_false_path -fall_from emac1_gtx_clk -rise_to emac1_gtx_clk
set_false_path -fall_from emac1_gtx_clk -rise_to user0_clock_clk
The problem will be fixed in a feature release of the Quartus® Prime Pro Edition Software.