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Official image version:
2021-12-02-raspios-buster-armhf.img
2021-10-30-raspios-bullseye-armhf.img
Board version:raspberry pi zero/zero 2/3B/4B/CM4
Download lcd154.dtbo to your pi
sudo cp lcd154.dtbo /boot/overlays/
sudo nano /boot/config.txt
Add the following code
dtparam=spi=on
dtoverlay=lcd154:rotate=270
hdmi_force_hotplug=1
max_usb_current=1
hdmi_group=2
hdmi_mode=1
hdmi_mode=87
hdmi_cvt 480 480 60 6 0 0 0
hdmi_drive=2
display_rotate=0
dtoverlay=dwc2,dr_mode=host
If you use the lcd at bullseye , You need comment out vc4-kms-v3d
like the following picture
unzip rpi-fbcp.zip
cd rpi-fbcp/build/
sudo install fbcp /usr/local/bin/fbcp
sudo nano /etc/rc.local
sleep 7
fbcp &
To reboot with using this command sudo reboot
Then the LCD will display ok