Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFR32FG12P/EFR32FG12P231F512GM68/CSEN/SCANMASK1#0x0
Scan Channel Mask 1
Scan Channel Mask.
https://github.com/cmsis-svd/cmsis-svd-data