Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series0/EFM32GG/EFM32GG890F1024/PRS/ROUTE#0x0
LOCATION=LOC0
I/O Routing Register
CH0 Pin Enable
CH1 Pin Enable
CH2 Pin Enable
CH3 Pin Enable
I/O Location
0 (LOC0): Location 0
1 (LOC1): Location 1
https://github.com/cmsis-svd/cmsis-svd-data