I have the SPI displays working as well but the upstream driver initializes the wrong colors on most of these ILI9486 displays. Once I get the test sample, I’m going to see if I can fix the driver and add different compatibles to toggle between them.
Also each of the displays have a different touchscreen offset so calibration would have to be done on a per model basis. If anyone has a certain screen they need to tweak, let us know.