TMS570LC4357: How to use RTP and DMM pins as GIO

Part Number: TMS570LC4357


Hello TIers 
   Could you please let me know, How to use RTP Synch or any RTP pins and DMM pins as a GIO.
I have configured it as GIO but No port is getting assigned.
So How to use this pins as GIO and which functions to be used to set or reset the pins.

Thank You!