P2 pin 1 should be connected to 3V. P2 pin 4 is Ground. There is LDO or power regulator on the board. It is not possible to power the board from the 8-pin connector, P1.
To program the board, the MIDAS-LINK (or JLINK) is plugged into the EVAL-ADuCM355EMCZ via the USB-SWD/UART adapter as shown below. Note, both the MIDAS-LINK and USB-SWD/UART needs separate USB connections to your PC.