Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32f7/STM32F767/DSI/DSI_GHCR#0x0
DSI Host Generic Header Configuration Register
Type
Channel
WordCount LSB
WordCount MSB
https://github.com/modm-io/cmsis-svd-stm32