Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFM32GG11B/EFM32GG11B840F1024GQ64/LCD/SEGD5H#0x0
Segment Data High Register 5
COM1 Segment Data High
https://github.com/cmsis-svd/cmsis-svd-data