Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series0/EFM32G/EFM32G842F128/CMU/ROUTE#0x0
I/O Routing Register
CLKOUT0 Pin Enable
CLKOUT1 Pin Enable
I/O Location
https://github.com/cmsis-svd/cmsis-svd-data