What overlay is compatible with the Raspberry Pi CM5 to use the DFR0550_v2 5" Touchscreen
Liam.Wood 2026-05-13 14:46:53 177 Views1 Replies I have spent hours trying to get the DFR0550_V2 5" touchscreen working with a new Raspberry Pi CM5 using the official RPi CM5 IO board.
Is it actually compatible and if so, what overlay can be used to make it work. So far nothing has worked, the generic overlay detects it but doesn't display anything.
We're currently prototyping but we're hoping to order a batch of 50 if suitable, can anyone help?
Thanks is in advance
This product is compatible with CM5 and requires the following configurations
1. Update the system using the sudo rpi update command
2. Use the sudo nano/boot/firmware/config.txt command to enter the config configuration and add a screen driver
• If using the DISP0 interface, add dtoverlay=vc4-kms-dsi-7 inch, dsi0 screen driver command, and then turn off and restart to light up the screen
• If using the DISP1 interface, add dtoverlay=vc4-kms-dsi-7 inch, dsi1 screen driver command (hardware requires short circuiting the J6 interface), then turn off and restart to light up the screen
Note:
If there are issues such as screen distortion, display abnormalities, and touch failure during use, the main reason is that the native wiring distance of the MIPI DSI on the CM5 hardware board is too long, and when combined with longer FPC connection lines, the transmission loss of high-speed MIPI differential signals increases, and the signal stability decreases significantly, leading to various display and touch abnormalities.
Therefore, it is recommended to replace the FPC cable with a shorter length for connection, shorten the overall signal transmission distance, effectively reduce signal attenuation and external interference, which can ensure clear and stable images, and completely improve problems such as touch insensitivity and touch disconnection, making the overall screen experience better.
Yx 
