Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32f7/STM32F767/DSI/DSI_LCOLCR#0x0
DSI Host LTDC Color Coding Register
Color Coding
Loosely Packet Enable
https://github.com/modm-io/cmsis-svd-stm32