I was recently prototyping a commercial project with an IL9341 LCD driver, a common part that my LCD glass vendor used in their modules. I asked the glass vendor for a development unit that had a wired-up interface and available schematics - they didn't have one. Perhaps they could find one in China in a few weeks, once everyone returned from the New Year's celebrations.

Adafruit had a usable unit in stock, with full schematics, and it was on my desk in 36 hours.