Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32F7x8/DSI/DSI_WCFGR#0x0
DSI Wrapper Configuration Register
DSI Mode
Color Multiplexing
TE Source
TE Polarity
Automatic Refresh
VSync Polarity
https://github.com/cmsis-svd/cmsis-svd-data