This driver is based on KeDeI LCD displays.
Initially it's downloaded from http://en.kedei.net/raspberry/raspberry.html
They updated their website and this driver is not possible to be downloaded anymore that's why I've uploaded it here.
However, running the initial driver will not make your display work, and people are confused why.
In order to work you have to do some modifications in /boot/config.txt file to start the display.
I've automated the process and all you have to do before running the script is:
sudo raspi-config
set the OpenGL mode to Fake KMS
run ./set_lcd
To revert again to HDMI, simply run ./set_hdmi
Please note that this driver uses it's own kernel and it will change yours.
Also this will not work on the newest Raspberry Pi OS, the last version of Raspbian which I managed to get it work is Stretch from 2019-04-08
You can download it here - https://downloads.raspberrypi.org/raspbian/images/raspbian-2019-04-09/