#create_clock -period 13.468 -waveform {0.000 5.000} [get_ports hdmi_rx_clk_p]

#from digilent datasheet. Compile OK
create_clock -period 13.468 -waveform {0.000 5.000} [get_ports TMDS_Clk_p_1]

#from pynq ref design. compile failed due to VCO issues
#create_clock -period 8.334 -waveform {0.000 4.167} [get_ports TMDS_Clk_p_1]