Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/EFR32MG24A010F1024IM40/ECAIFADC_NS/CTRL#0x0
MODE=MP, IQSEL=NA
No Description
Mode
0 (MP): Magnitude + Phase +AGC
1 (IQ): I + Q + AGC
IQ selection
0 (NA): Not used
1 (IONLY): Only sample I values
2 (QONLY): Only sample Q values
3 (IANDQ): Sample I and Q values
https://github.com/cmsis-svd/cmsis-svd-data