This section contains debugging steps for issues with the clock recovery or channel equalization at sink and if the Training Done is Low.
- Try with a working sink such as the DisplayPort Analyzer sink device.
- Use a DisplayPort 1.4 certified cable. Change the cable and check again.
- Put a DisplayPort AUX Analyzer in the Transmit path and check if the various training stages match with those mentioned in Main Link Setup and Management.
- Probe the
lnk_clkoutput and check if the SI of the clock is within the Phase Noise mask of the respective GT. The Noise mask requirement is listed in the respective GT documentation.
- Check status registers in the Video PHY Controller for Reset done
0x0020) and PLL lock Status (