About Type-C port on db845c

Hi,

According to rb3 hardware manual, the type-c port on db845c could be used as USB 3.0 host port.
Actually, I’ve modified the usb1 dwc3 driver’s dr_mode to host, but it won’t work, no power delivered on type-c.
I noticed that there’s a VBUS pin comes from PMI8998, that might be the problem type-c couldn’t power the device.
Anyone can help me to figure out how to config the dts of pmi8998 to drive the type-c host port?

Thanks!