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H747 DSI use one data lane issue

SONGTAOSI
Associate

First, let's introduce the usage environment.The Board is STM32H747I-DISCO, the LCD board is MB1166-A09,and the pack is STM32Cube_FW_H7_V1.11.0.

Now I'll describe my issue. In the official routine LCD_DSI_CmdMode_SingleBuffer, DSI uses two data lanes to communicate with the display, and the display can be displayed correctly.Now I want to use one data lane to communicate with the display, the LCD do not show anything.I made the following changes to the official routine:

SONGTAOSI_0-1739430503878.png

OTM8009A is driver IC of LCD(MB1166-A09), and have a pin LANSEL to select one  or  two data lanes communicate with MCU. However I unable to find the LANSEL pin pad . Does that mean users cannot change two data lanes to one data lane of LCD side?I want to know how to achieve DSI communicate with the LCD (MB1166-A09) with one data lane.

SONGTAOSI_1-1739431560522.png

 

Looking forward to your reply!

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