create_clock -name clk_sys -period 20 -waveform {0 10} [get_ports {clk_sys}]
create_clock -name clk_10M -period 100 -waveform {0 50} [get_pins {pll_10M/pll_inst/CLKOUT}]
create_clock -name clk_10M_p90 -period 10 -waveform {0 5} [get_pins {pll_10M/pll_inst/CLKOUTP}]
