I see there is an upstream tiny-DRM based kernel driver for ST7735r, which might be compatible with your ST7789, or might require some (hopefully) minimal adjus

I see there is an upstream tiny-DRM based kernel driver for ST7735r, which might be compatible with your ST7789, or might require some (hopefully) minimal adjustments: https://elixir.bootlin.com/linux/latest/source/drivers/gpu/drm/tiny/st7735r.c https://elixir.bootlin.com/linux/latest/source/drivers/gpu/d...