Error (15653): The Fitter cannot find a legal configuration for the following atoms

Hi,

From the error log that you shared, I can see below 2 possible issues

1. Is your NativePHY IP updated to match with your Quartus version ? If not then pls regenerate your NativePHY IP again
2. Your PMA output VOD setting maybe causing some issue ?

• Open your NativePHY IP to cross check again to ensure there is no warning or error message
  • Try out different output VOD setting

I can help you to review your design if you can share your design QAR file here.

Thanks.

Regards,

dlim