1.5.1 RDK X5
RDK X5 supports two display output methods: HDMI and MIPI DSI. They cannot be used simultaneously. The system uses HDMI output by default.
HDMI
RDK X5 provides one HDMI interface, supporting a maximum resolution of 1080P60.
HDMI Switching
The system uses HDMI output by default and requires no additional configuration. If you have already switched to MIPI DSI output, you can use the srpi-config tool to switch back to HDMI output. The changes take effect after rebooting the device.
2 Display Options > D1 Display Choice > 2 HDMI
If you prefer not to use the srpi-config tool, you can configure it using the following command line method.
mv /etc/X11/xorg.conf.d/xorg_hdmi_ignore.conf /etc/X11/xorg.conf.d/xorg_hdmi_ignore.conf.disable
mv /etc/X11/xorg.conf.d/xorg_dsi_ignore.conf.disable /etc/X11/xorg.conf.d/xorg_dsi_ignore.conf
Default Resolution
The default resolution can be set by modifying the /etc/X11/xorg.conf.d/1-resolution.conf file:
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1280x720"
EndSubSection
EndSection
MIPI DSI
2.8inch DSI LCD
Hardware Connection
Use the DSI-Cable-12cm cable to connect the display's DSI interface to the 22-pin DSI interface on the X5 RDK board. Use the interface latch to secure the non-contact side.
Installation result:
Software Configuration
Use the srpi-config tool to select 2.8inch DSI LCD. The changes take effect after rebooting.
2 Display Options > D3 MIPI LCD Choice > 2.8inch DSI LCD
Demo
3.4inch DSI LCD
Hardware Connection
Use the DSI-Cable-12cm cable to connect the display's DSI interface to the 22-pin DSI interface on the X5 RDK board. Use the interface latch to secure the non-contact side.
Connect 5V power supply through the 4-pin pogo connector, including 5V and GND. On the RDK X5 board's 40-pin interface, pin 4 is 5V and pin 6 is GND.
Installation result:
Software Configuration
Use the srpi-config tool to select 3.4inch DSI LCD (C). The changes take effect after rebooting.
2 Display Options > D3 MIPI LCD Choice > 3.4inch DSI LCD (C)
Demo
4.3inch DSI LCD
Hardware Connection
Use the DSI-Cable-12cm cable to connect the display's DSI interface to the 22-pin DSI interface on the X5 RDK board. Use the interface latch to secure the non-contact side.
Installation result:
Software Configuration
Use the srpi-config tool to select 4.3inch DSI LCD. The changes take effect after rebooting.
2 Display Options > D3 MIPI LCD Choice > 4.3inch DSI LCD
Demo
7inchC DSI LCD
Hardware Connection
Use the DSI-Cable-12cm cable to connect the display's DSI interface to the 22-pin DSI interface on the X5 RDK board. Use the interface latch to secure the non-contact side.
Connect 5V power supply through the 4-pin pogo connector, including 5V and GND. On the RDK X5 board's 40-pin interface, pin 4 is 5V and pin 6 is GND.
Connect I2C communication through the 4-pin pogo connector to the I2C5 interface on the X5 RDK board's 40-pin connector. On the RDK X5 board's 40-pin interface, pin 3 is SDA5 and pin 5 is SCL5.
Installation result:
Software Configuration
Use the srpi-config tool to select 7inch DSI LCD (C). The changes take effect after rebooting.
2 Display Options > D3 MIPI LCD Choice > 7inch DSI LCD (C)
Demo
7.9inch DSI LCD
Hardware Connection
Use the DSI-Cable-12cm cable to connect the display's DSI interface to the 22-pin DSI interface on the X5 RDK board. Use the interface latch to secure the non-contact side.
Use a 5V/3A Type-C power supply to power the screen.
Installation result:
Software Configuration
Use the srpi-config tool to select 7.9inch DSI LCD. The changes take effect after rebooting.
2 Display Options > D3 MIPI LCD Choice > 7.9inch DSI LCD
Demo
8inch DSI LCD
Hardware Connection
Use the DSI-Cable-12cm cable to connect the display's DSI interface to the 22-pin DSI interface on the X5 RDK board. Use the interface latch to secure the non-contact side.
Use a 5V/3A Type-C power supply to power the screen.
Installation result:
Software Configuration
Use the srpi-config tool to select 8inch DSI LCD (C). The changes take effect after rebooting.
2 Display Options > D3 MIPI LCD Choice > 8inch DSI LCD (C)
Demo
10.1inch DSI LCD
Hardware Connection
Use the DSI-Cable-12cm cable to connect the display's DSI interface to the 22-pin DSI interface on the X5 RDK board. Use the interface latch to secure the non-contact side.
Use a 5V/3A Type-C power supply to power the screen.
Installation result:
Software Configuration
Use the srpi-config tool to select 10.1inch DSI LCD (C). The changes take effect after rebooting.
2 Display Options > D3 MIPI LCD Choice > 10.1inch DSI LCD (C)
Demo
Legacy Method
If the srpi-config tool version on your system is outdated and does not have the D3 MIPI LCD Choice option, you can use the following method to upgrade the tool.
Alternatively, if you prefer not to use the srpi-config tool, you can configure it using the following command line method.
- Switch to MIPI DSI display mode with the following command:
mv /etc/X11/xorg.conf.d/xorg_dsi_ignore.conf /etc/X11/xorg.conf.d/xorg_dsi_ignore.conf.disable
mv /etc/X11/xorg.conf.d/xorg_hdmi_ignore.conf.disable /etc/X11/xorg.conf.d/xorg_hdmi_ignore.conf
- Open the
/boot/config.txtfile. Taking2.8inch DSI LCDas an example, add the following code at the end of config.txt, save, exit, and restart the system.
dtoverlay=dsi-waveshare-panel-overlay-2_8_inch
The configuration method is the same for all display models. Simply modify the dtoverlay parameter. Refer to the table below:
| Screen Type | dtoverlay Parameter |
|---|---|
| 2.8inch DSI LCD | dsi-waveshare-panel-overlay-2_8_inch |
| 3.4inch DSI LCD (C) | dsi-waveshare-panel-overlay-3_4_inch |
| 4.3inch DSI LCD | dsi-waveshare-panel-overlay-4_3_inch |
| 7inch DSI LCD (C) | dsi-waveshare-panel-overlay-7_0_inchC |
| 7.9inch DSI LCD | dsi-waveshare-panel-overlay-7_9_inch |
| 8inch DSI LCD | dsi-waveshare-panel-overlay-8_0_inch |
| 10.1inch DSI LCD | dsi-waveshare-panel-overlay-10_1_inch |