Asking this again, since in 3 weeks no one has responded
The USB PD library provided for K22/PTN5010 used with Kinetis MCUs (OM13588 board) is not documented at all. The code is vast and not very inviting. I need to know how to implement support for a custom SVID aka user alternate mode. I need it to be autonegotiated (PTN5010 is a sink that advertises a user alternate mode).