TCPM separate power supply driver and cc manager

[kanceld]

How would a TCPM-implementing device such as the fusb302 driver integrate with a buck-boost nvdc charger such as the bq25710?

I see the points here:
Fusb302 driver
where you can turn on a declared "vbus" regulator or turn on "charge"?

and here:
Tcpm driver
that discusses setting limits and voltages.

But for a port that has a separate "charger" ic for managing the power (at least from the fusb) how can I attach the power control to the same tcpm driver?

I do see that there is a section for registering a power supply in tcpm, but it seems to be called from the section of the fusb302 driver that initializes the tcpm:
Register Power Supply section
Callout to above from port register that is called from fusb302 section

Any pointers are much appreciated!

Thanks!