We want to delay PCIe LTSSM start time after the AFI_PEX_CTRL_RST pulse finish.
When disable and enable the AFI_PEX_CTRL_RST, PEX0_RST will send the pulse to PCIe device.
We check the voltage waveform on an oscilloscope. It will immediately start LTSSM with PCIe device.
Now, we want to add delay time when PEX0_RST pulse finish.
So, how to delay PCIe LTSSM start time ?