Hello,
Ive been trying to get my Radxa DSI 10FHD display to work with the current Radxa CM5 io image. After running rsetup to add the display I still don’t get a backlight or display of any kind. It came with 3 cables, I tried both of the standard ones. The other one appears to be for a pi with some pins for breaking out the touchscreen. In my case both the brown plastic bit is facing up on the CM5 carrier board side and the touchscreen side. (Meaning not with the pins up)
from dmesg
sudo dmesg|grep dsi
[ 12.496511] platform fdd90000.vop: Fixed dependency cycle(s) with /dsi@fde30000
[ 13.863241] pwm-backlight dsi1-backlight: Looking up power-supply from device tree
[ 13.863248] pwm-backlight dsi1-backlight: Looking up power-supply property in node /dsi1-backlight failed
[ 13.863258] pwm-backlight dsi1-backlight: supply power not found, using dummy regulator
[ 15.488779] panel-simple-dsi fde30000.dsi.0: Looking up power-supply from device tree
[ 15.489053] panel-simple-dsi fde30000.dsi.0: Specify missing connector_type
[ 15.526340] rockchip-drm display-subsystem: bound fde30000.dsi (ops 0xffff80000914c0c8)
[ 16.119679] dw-mipi-dsi2 fde30000.dsi: [drm:dw_mipi_dsi2_encoder_atomic_enable] final DSI-Link bandwidth: 990000 x 4 Kbps
Now Im not sure that matters because even if I disconnect the display I get the same information in dmesg.
Under /sys/class I can see the following.
rock@radxa-cm5-io:/sys/class/drm/card0-DSI-1$ ls -alF
total 0
drwxr-xr-x 3 root root 0 Jan 1 1970 ./
drwxr-xr-x 7 root root 0 Jan 1 1970 ../
lrwxrwxrwx 1 root root 0 Sep 16 17:45 device -> ../../card0/
-r--r--r-- 1 root root 4096 Sep 16 17:45 dpms
-r--r--r-- 1 root root 0 Sep 16 17:45 edid
-r--r--r-- 1 root root 4096 Sep 16 17:45 enabled
-r--r--r-- 1 root root 4096 Sep 16 17:45 modes
drwxr-xr-x 2 root root 0 Sep 16 17:45 power/
-rw-r--r-- 1 root root 4096 Sep 16 17:45 status
lrwxrwxrwx 1 root root 0 Jan 1 1970 subsystem -> ../../../../../../class/drm/
-rw-r--r-- 1 root root 4096 Jan 1 1970 uevent
I tried the overlay for 10hd as well. In addition to that I tried Joshua Riek’s rockchip ubuntu current latest build. I had to copy the overlay from the Radxa since only the smaller Radxa display and the 10hd one (not 10fhd) existed. It didn’t work and the results were exactly the same. The touchscreen seemed to work as at one point I had an HDMI display attached as well and it would move the mouse. All or nearly all the testing has been done with only Ethernet and power attached.
What are the next steps in troubleshooting?
thank you
Bryan