Why does the Stratix® 10 FPGA External Memory Interfaces DDR4 IP show minimum pulse violations on the wf_clk clocks in the Intel Quartus® Prime timing analyzer?

Description

Due to a problem in the Quartus® Prime Pro software version 17.1.1, you may see Minimum Pulse Width timing violations associated with the wf_clk_<number> clocks in the Quartus® Compilation TimeQuest report of a project implementing the Stratix® 10 FPGA External Memory Interfaces DDR4 IP.

An example of a Minimum Pulse Width timing violation from the Stratix 10® DDR4 example design project is emif_s10_0|emif_s10_0_wf_clk_3, which has a slack failure of -0.058.

Resolution

The wf_clk clock minimum pulse width violations can be ignored.
This problem is scheduled to be fixed in a future release of the Quartus® Prime Pro software.