Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/EFM32PG23B210F256IM48/SMU_NS/BMPUSATD0#0x0
Set master bits to 1 to mark as a secure master
MCU LDMA secure mode
SEEXTDMA secure mode
https://github.com/cmsis-svd/cmsis-svd-data