Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFM32GG12B/EFM32GG12B810F1024GM64/LCD/SEGEN2#0x0
Segment Enable (32 to 39)
Segment Enable (second Group)
https://github.com/cmsis-svd/cmsis-svd-data