Hi Yuan,
some useful hints can be found in this application note:
https://www.nxp.com/webapp/Download?colCode=AN5220
Search for 'layout' keyword.
Then I can provide source files for DEVKIT-MPC5748G - attached (created in Cadence Allegro). It's not supposed to be a reference design, it's configurable EVB but it could help up to certain level too.
Regards,
Lukas