Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32h7/STM32H745_CM4/DSIHOST/DSI_GPDR#0x0
DSI Host generic payload data register
DATA1
DATA2
DATA3
DATA4
https://github.com/modm-io/cmsis-svd-stm32