Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFM32GG12B/EFM32GG12B310F1024GQ100/PCNT1/SYNCBUSY#0x0
Synchronization Busy Register
CTRL Register Busy
CMD Register Busy
TOPB Register Busy
OVSCFG Register Busy
https://github.com/cmsis-svd/cmsis-svd-data