Orange pi zero 2 W drivers for IPS 3.5 ST7796U SPI screen

https://www.lcdwiki.com/3.5inch_IPS_SPI_Module_ST7796

Orange Pi Zero 2W wiring:

SDI(MOSI)   PH7 SPI1_MOSI
SDO(MISO)   PH8 SPI1_MISO
SCK       	PH6 SPI1_CLK
LCD_CS    	PH5
LCD_RS     	PH4 
LCD_RST     PI0
CTP_SCL     PI7
CTP_RST     PH2
CTP_SDA     PI8
CTP_INT     PH3

Install st7796s drivers for Orange pi zero 2 W

Install kernel headers

sudo dpkg -i /opt/linux-headers*.deb

on armbian install header via armbian-config

Then clone repo

git clone https://github.com/rumidom/st7796s.git
cd st7796s/kernel_module/

Build kernel module and install it

make
sudo make install
make clean
sudo depmod -A
sudo bash -c 'echo "fb_st7796s" >> /etc/initramfs-tools/modules'
sudo update-initramfs -u

Then install dts and reboot device.

cd ../dts/
sudo orangepi-add-overlay sun50i-h618-st7796s-w2.dts
sudo reboot

If you want mirror desktop to screen, follow these instructions

Check framebuffer port

ls /dev/fb*

Create new file

sudo vim /etc/X11/xorg.conf.d/99-fbdev.conf

Copy paste this content and remember to change framebuffer port

Section "Device"
  Identifier "myfb"
  Driver "fbdev"
  Option "fbdev" "/dev/fb0"
EndSection

Install ft6236 drivers for Orange pi zero 2 W

Build kernel module and install it

cd st7796s/touchscreen_kernel_module/
make
sudo make install
make clean
sudo depmod -A
sudo bash -c 'echo "ft6236" >> /etc/initramfs-tools/modules'
sudo update-initramfs -u

Then install dts and reboot device.

cd ../dts/
sudo orangepi-add-overlay sun50i-h618-FT6336.dts
sudo reboot