Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFM32GG12B/EFM32GG12B810F1024GM64/USB/DOEP1_DMAADDR#0x0
Device OUT Endpoint x+1 DMA Address Register
https://github.com/cmsis-svd/cmsis-svd-data