Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/EFR32BG22C224F512GM32/CMU_S/TRACECLKCTRL#0x0
PRESC=DIV1
No Description
TRACECLK Prescaler
0 (DIV1): TRACECLK is SYSCLK divided by 1
1 (DIV2): TRACECLK is SYSCLK divided by 2
3 (DIV4): TRACECLK is SYSCLK divided by 4
https://github.com/cmsis-svd/cmsis-svd-data