Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series0/EFM32GG/EFM32GG280F512/PCNT0/SYNCBUSY#0x0
Synchronization Busy Register
CTRL Register Busy
CMD Register Busy
TOPB Register Busy
https://github.com/cmsis-svd/cmsis-svd-data