I have 2.4 Inch display attached to a Raspberry Pi 3B+, it totally works, but I've noticed that when raspbian turn off the display, the backlight led is still on.
There is a way to control the backlight led? I've read that other 2.4 Inch displays have a BL Jumper but this doesn't.
I only have this documentation about my display. http://www.lcdwiki.com/2.4inch_RPi_Display_For_RPi_3A%2B