Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/BGM210LA22JNF/SMU_NS/M33CTRL#0x0
Holds the M33 control settings
SVTAIRCR LOCK bit
NSVTOR LOCK bit
SMPU LOCK bit
NSMPU LOCK bit
SAU LOCK bit
https://github.com/cmsis-svd/cmsis-svd-data