Working with a display using DSI in a video mode

[STolm.1]

Good day!

I try to work with 1.3 TFT LCD 320RGB x 320 with ST7796DW driver using STM32L4R9ZG DSI in a video mode. I try to initialize the display using HAL_DSI_ShortWrite and HAL_DSI_LongWrite functions. But after only 3 commands (doesn't matter HAL_DSI_ShortWrite or HAL_DSI_LongWrite, registers and number of parameters) the 4th command returns HAL_TIMEOUT. Any ides what is the problem?

Thank You!

[MM..1]

Hi have you any solution?