Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/EFM32PG22C200F32IM32/SYSCFG_NS/IEN#0x0
Write to enable interrupts.
Software interrupt 0
Software interrupt 1
Software interrupt 2
Software interrupt 3
RAM 1-bit Error Interrupt Enable
RAM 2-bit Error Interrupt Enable
https://github.com/cmsis-svd/cmsis-svd-data