Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/EFR32FG23B010F512IM40/GPIO_NS/LESENSE_CH12OUTROUTE#0x0
CH12OUT port/pin select
CH12OUT port select register
CH12OUT pin select register
https://github.com/cmsis-svd/cmsis-svd-data