examples/igloo2/example.sdc - third_party/yosys - Git at Google

 # Add timing constraints here
 create_clock -period 10.000 -waveform {0.000 5.000} [get_ports {clk}]
	# Add timing constraints here
	create_clock -period 10.000 -waveform {0.000 5.000} [get_ports {clk}]