Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Maxim-Integrated/max32520/GCR/ECCIE#0x0
ECC IRQ Enable Register
ECC System RAM0 Interrupt Enable.
ECC System RAM1 Interrupt Enable.
ECC System RAM2 Interrupt Enable.
ECC System RAM3 Interrupt Enable.
ECC System RAM4 Interrupt Enable.
https://github.com/analogdevicesinc/msdk