Why does the Quartus® Prime Pro Edition Software report Error (170084) for Agilex® 5 Configuration via Protocol CvP designs?

Description

Due to a problem in the Quartus® Prime Pro Edition Software version 26.1.1, Error (170084) might occur during the Fitter stage when compiling designs that enable Configuration via Protocol (CvP) with the GTS AXI Streaming IP for PCI Express* for Agilex® 5 FPGA devices because of a control shadow register connectivity problem in the IP.

This problem happens when the design enables CvP in the GTS AXI Streaming IP for PCI Express* and in the Device and Pin Options CvP settings is enabled. Designs that do not enable CvP are not affected.

You might see an error message similar to the following:

Error (170084): Can't route signal "<hierarchy>|...|O_HIO_USER_RX_CLK1_CLK" to atom "<hierarchy>|...|u_ctrl_shadow_loader|avmm_clk_o"

Resolution

A patch is available to fix this problem for the Quartus® Prime Pro Edition Software version 26.1.1. Download and install patch 1.21 below.

This problem is scheduled to be resolved in a future release of the Quartus® Prime Pro Edition Software.