To ensure the touch coordinates match the display, the touchscreen-size-x and touchscreen-size-y properties in the Device Tree (DTS) must be set to 1080 and 600 respectively.
The GT9xx series 7-inch display (typically 1024x600 resolution, though often advertised as 1080x600) is the It bridges the gap between clunky, low-res resistive touchscreens and expensive industrial HMI panels. While it suffers from mediocre viewing angles and a bulky form factor, the responsive 5-point capacitive touch and sharp resolution make it the best value-for-money choice for Raspberry Pi and Arduino projects. gt9xx-1080x600