Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/EFR32MG24A120F1536GM48/PRS_S/CONSUMER_WDOG1_SRC0#0x0
SRC0 consumer register
SRC0 async channel select
https://github.com/cmsis-svd/cmsis-svd-data