Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFR32MG1B/EFR32MG1B231F256GM32/IDAC0/DUTYCONFIG#0x0
Duty Cycle Configuration Register
Duty Cycle Enable
https://github.com/cmsis-svd/cmsis-svd-data