Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series0/EFM32HG/EFM32HG321F32/CMU/USHFRCOCTRL#0x0
USHFRCO Control
USHFRCO frequency adjust
USHFRCO dither enable
USHFRCO suspend
USHFRCO Timeout
https://github.com/cmsis-svd/cmsis-svd-data