Hi @garywang, thanks for the reply. It is mandatory because we need to use a 7" MIPI DSI touchscreen, the HDMI touchscreens cost 3-4 times as much.
And we can’t get the HDMI display to output to any other resolution besides 1920x1080, xrandr always returns an error, whereas our display needs to run at 1024x768
We have to make a final decision on the board we’re going to use within the week, and the production will start on early March, so this will need to be done by February. Would that be a possible scenario? If you know MIPI DSI will not be ready by then, it would be nice to know to move on.