Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series0/EZR32WG/EZR32WG330F256R55/DMA/LOOP1#0x0
Channel 1 Loop Register
DMA Channel 1 Loop Width
DMA Channel 1 Loop Enable
https://github.com/cmsis-svd/cmsis-svd-data