Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Maxim-Integrated/max32520/I2C0/DMA#0x0
RXEN=dis, TXEN=dis
DMA Register.
TX channel enable.
0 (dis): Disable.
1 (en): Enable.
RX channel enable.
https://github.com/analogdevicesinc/msdk