Using Radxa Displays on Raspberry Pi

Radxa Display 8 HD

Radxa 8-inch 800*1280 TFT display, supports capacitive touch.

Product Link: https://radxa.com/products/accessories/display-8hd

Hardware connection

Working with Raspberry Pi 4B

Use No. 2 15-pin to 40-pin FPC cable.

The FPC cable has an additional 7-pin holder that needs to be connected as defined below:

Connect the screen to the Raspberry Pi 4B as follows:

Radxa Display 8 HD	Raspberry Pi 4B
VCC-5V	PIN 2: 5V Power
GND	PIN 6: GND
BL-PWM	PIN 1: 3V3 Power
TP-RST	PIN 11: GPIO 17
TP-INT	PIN 7: GPIO 4
LCD-RESET	PIN 17: 3V3 Power

The seventh pin is currently unused

Software Settings

1. Raspberry Pi OS used

   https://www.raspberrypi.com/software/operating-systems/

   • Raspberry Pi OS (64-bit)
   • Release date: March 15th 2024
   • File name: 2024-03-15-raspios-bookworm-arm64.img.xz

2. Install required packages

   sudo apt update
   sudo apt install dkms raspberrypi-kernel-headers
   

3. Install kernel driver

   Download the driver installation package here, or use the wget command to download it:

   wget https://github.com/radxa/radxa-displays-on-raspberry-pi/releases/download/1.0.0/panel-radxa-dsi-dkms_1.0.0_all.deb
   

   Install the driver:

   sudo dpkg -i panel-radxa-dsi-dkms_1.0.0_all.deb
   

4. Modify configuration

   The configuration file config.txt can be found at the root directory of the microSD card. Alternatively, you can access it by using the command vi:

   sudo vi /boot/firmware/config.txt
   

   Add the following three lines of configuration after [all]:

   [all]
   display_auto_detect=0
   dtoverlay=vc4-kms-v3d
   dtoverlay=vc4-kms-dsi-radxa-panel
   

   After saving, restart:

   sync
   sudo reboot
   

   After restarting, the screen should display normally.

   

5. Configured as landscape orientation

   • Screen

     Boot to desktop. Run screen configuration utility from preferences menu and choose the correct orientation of display. Click the green tick button and display should be rotated.

   • Touch Panel

     Work in progress...

Known Issues

• The backlight brightness of the current version is not adjustable, and this problem will be fixed in the next version.