Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32H7x5_CM7/Ethernet_MAC/DMAMR#0x0
DMA mode register
Software Reset
DMA Tx or Rx Arbitration Scheme
Transmit priority
Priority ratio
Interrupt Mode
https://github.com/cmsis-svd/cmsis-svd-data