Tcl Error in Timing Analysis phase using LVDS SERDES RX IP

Hi,

I have written a script that allows for a more or less automatic solution within Quartus to replace the line causing the error. As it is possible to execute a tcl script after quartus_ipgenerate to replace the line in sdc_util.tcl, I wrote such a script.

The content of the script is:

set module [lindex $quartus(args) 0]
 
if [string match "quartus_ipgenerate" $module] {
	 post_message "Correcting name of LVDS clock tree instance"
 
    set timestamp [clock format [clock seconds] -format {%Y%m%d%H%M%S}]
 
	 set filename "ip/../xxx_lvds_rx/altera_lvds_core20_191/synth/sdc_util.tcl"
		
	set temp     $filename.new.$timestamp
	set backup   $filename.bak.$timestamp
 
	set in  [open $filename r]
	set out [open $temp     w]
 
	# line-by-line, read the original file
	while {[gets $in line] != -1} {
		if {[string first "set fclk_name" $line] != -1} {
			set line "      foreach_in_collection lvds_node \[get_nodes -nowarn \"\$lvds_instance_name|*|fclk\"\] { set fclk_name \[get_node_info -name \[get_edge_info -src \[get_node_info -clock_edges \[lindex \$lvds_node 0\]\]\]\]; break }"
		}
 
		# then write the transformed line
		puts $out $line
	}
 
	close $in
	close $out
 
	# move the new data to the proper filename
	file link -hard $backup $filename
	file rename -force $temp $filename
}

You have to set the filename to the correct location.

Additionally, add the following line to .qsf file:

set_global_assignment -name POST_MODULE_SCRIPT_FILE "quartus_sh:name_of_script.tcl"

Maybe, this solution is benificial for someone, therefore I decided to share it with you.

-Michael