Good morning everyone.
I connected a CM4 mounted on an Raspberry Pi IO Board to a display with DSI interface as can be seen from the attached photograph. The commercial display board has an ICN6211 chip on board to deserialize the DSI data flow and output a 24 bit RGB interface and control signals.
Everything works perfectly if I use an intact flat cable, which allows the two signals SCL and SDA of the I2C interface to pass. By eliminating these two signals, as shown in the photograph, the CM4 no longer controls the display because it does not recognize its presence at startup (DRM if I'm not mistaken).
My problem is this: I want to create a custom display to connect to the CM4, using the ICN6211 chip like on the board I'm using, but I would like to eliminate the check at startup for the presence of the display on the CM4 (via SCL and SDA signals), because I can't handle it. In short, I would like it to work without the two signals, as can be seen from the photograph. How can I proceed?
Statistics: Posted by giuseppe.sama — Fri Apr 05, 2024 8:59 am