Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFM32GG11B/EFM32GG11B820F2048GM64/LDMA/CH15_SRC#0x0
Channel Descriptor Source Data Address Register
Source Data Address
https://github.com/cmsis-svd/cmsis-svd-data