Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFR32MG1B/EFR32MG1B132F256GM32/LDMA/CHBUSY#0x0
DMA Channel Busy Register
Channels Busy
https://github.com/cmsis-svd/cmsis-svd-data