I am working on a custom-made handheld PCB based around a PI Compute Module and one of the hardest steps I have found is how to include an HDMI-to-(50pin-TTL or LVDS) driver on my PCB to run my LCD TFT 7" 1024x600 IPS panel. First I have not found any available open-source driver board, either TTL, LVDS, or parallel RGB. The only alternative I have found is the Adafruit TFP401 board, but it is only compatible with Adafruit's low-resolution (800x480) 40pin TTL screens. Higher resolutions TTL screens often come with 50 pin connectors. Also, I know the pi's MIPI display connector is closed-sourced and only works with pi's expensive and low-resolution screens.
In summary, do you know any open-source HDMI-to-TTL or LVDS driver PCB design I can use for my project? If so, could you also share the schematics and compatible list of screens available for this driver? Thank you.
Maybe I am looking at it from the wrong perspective. If you would have to add an LCD driver to your custom PCB, how would you do it?