Knowledge Base Article

IP SDC: Could not find active CLKOUT ports for user facing clocks can't read "top_fab_inst_name": no such variable while executing "get_registers -nowarn ${top_fab_inst_name}hdpldadapt_tx_chnl_*~aib_fabric_pma_aib_tx_clk.reg"

Description

Due to a problem in the Intel® Quartus® Prime Pro Edition Software version 22.2, you may see this error during compilation of the implementation revision, when partial reconfiguration is enabled and the F-Tile Avalon® Streaming Intel® FPGA IP for PCI Express* is being used:

IP SDC: Could not find active CLKOUT ports for user facing clocks 

can't read "top_fab_inst_name": no such variable

    while executing

"get_registers -nowarn ${top_fab_inst_name}hdpldadapt_tx_chnl_*~aib_fabric_pma_aib_tx_clk.reg"

    invoked from within

"set hdpldadapt_tx_pld_rst_n    [get_registers -nowarn ${top_fab_inst_name}hdpldadapt_tx_chnl_*~aib_fabric_pma_aib_tx_clk.reg]"

 (file "../../../../modules/c7_chip/main/src/tech/agilexf/map800_2vr0/ip_pcie_st_gen3x4/pcie_avst_f_600/synth/pcie_f_ip.sdc" line 440)

ERROR: An error occurred during automatic periphery placement

Resolution

To work around this problem, remove the FAST_PRESERVE assignment, as F-Tile cannot be used with fast preservation. 

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

Updated 3 months ago
Version 2.0
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