Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFM32GG12B/EFM32GG12B530F512GQ100/ADC0/SCANMASK#0x0
Scan Sequence Input Mask Register
Scan Sequence Input Mask
https://github.com/cmsis-svd/cmsis-svd-data