Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/EFR32BG22C224F512GM32/IADC0_S/SCALE1#0x0
GAIN3MSB=GAIN011
Scale
Offset
Gain 13 LSBs
Gain 3 MSBs
0 (GAIN011): Upper 3 bits of gain = 011 (0.75x)
1 (GAIN100): Upper 3 bits of gain = 100 (1.00x)
https://github.com/cmsis-svd/cmsis-svd-data