Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32F7x8/DSI/DSI_PCR#0x0
DSI Host Protocol Configuration Register
EoTp Transmission Enable
EoTp Reception Enable
Bus Turn Around Enable
ECC Reception Enable
CRC Reception Enable
https://github.com/cmsis-svd/cmsis-svd-data