Alright, so I finally got my 1820A card working fully in macOS, but can't for the life of me get the trackpad working. I got 1820A working by finding my device with IORegistryExplorer: GP10 - 1D,1 with the 14e4,4353 injection
If anyone has any tips on getting the trackpad working on these 3400 Series laptops, that would be greatly appreciated! Here is my debug output.
debug_29620.zip