A quick guide on how to install a MHS 3.5 inch LCD on a Raspberry Pi running 64bit OS (namely Raspbian).
This is cloned and cobbled together from https://github.com/tux1c/wavesharelcd-64bit-rpi (who deserves all the credit) and https://github.com/alexstacey/MHS35-lcd-64bit-rpiis (who fixes the typo errors).
tested on a raspberry 4B 8GB with a fresh install of Raspbian 64 bit lite from here https://downloads.raspberrypi.org/raspios_lite_arm64/images/raspios_lite_arm64-2021-05-28/
this LCD may have diffrent names ，waveshare is "3.5inch RPi LCD (C)" :
https://www.waveshare.net/wiki/3.5inch_RPi_LCD_(C)
goodtft is "mh35",some other call it "lcd35"；
actually 3.5 inch LCD series contains at least 3 types：LCD A /LCD B/LCD C. https://www.waveshare.net/wiki/3.5inch_RPi_LCD_(C)
Below is LCD (C) called by waveshare which also called mhs 3.5 by goodftf，and the exactly description is on http://www.lcdwiki.com/MHS-3.5inch_RPi_Display
| Name | Description |
|---|---|
| SKU | MHS3528 |
| Screen Size | 3.5inch |
| LCD Type | TFT |
| Module Interface | SPI (upports up to 125MHz SPI input) |
| Resolution | 320*480 (Pixel) |
| Touch Screen Controller | XPT2046 |
| LCD Driver IC | ILI9486 |
| Backlight | LED |
| power consumption | 0.16A*5V |
| Working temperature（℃） | -20~60 |
| Active Area | 48.96x73.44(mm) |
| Module PCB Size | 85.42*55.60 (mm) |
| Package Size | 136x98x41 (mm) |
| Product Weight(Package containing)(g) | 92 (g) |
 |
Installation
sudo rm -rf XPT2046-64bit-rpi
git clone https://github.com/GoogleBeEvil/XPT2046-64bit-rpi.git
cd XPT2046-64bit-rpi
chmod +x install.sh
sudo bash install.sh is for OS have installed xorg
or
sudo bash install-lite.sh is for OS have not installed xorg，usually raspberry pi OS lite
Troubleshooting
White screen on boot (raspberry pi boots)
make sure dtoverlay=vc4-fkms-v3d uncommented or commented out in /boot/config.txt,try both!