1.Which seller did you purchase the product(s) from?
robotshop.com
2.The Model number of the product(s) you have purchased?
https://www.robotshop.com/de/de/arducam-ov9281-1mp-mono-global-shutter-mipi-kamera-raspberry-pi.html
3.Which Platform are you using the product(s) on?
Raspberry Pi 4 CM IO board
4.Which instruction are you following?
https://www.arducam.com/docs/cameras-for-raspberry-pi/migrated/ov9281-1mp-global-shutter-raspberrypi-camera/#software-setup
5.Has your product ever worked properly?
Never worked
6.What problems are you experiencing?
Hello,
so I just got the above mentioned camera module as Rev. B UC-599.
Since it’s stated that this module has official support on the rpi linux branch via the v4l2 subsystem, I was quite sad to not see it working.
I connected the module with the compute module 4 IO board through the CAM0 CSI-2 interface.
And I fitted the 2 jumpers on J6 for the I2C communication for CAM0.
Next, I added “dtoverlay=ov9281” to the config file, to enable the camera module.
Finally I booted the pi and checked the loaded driver with “modinfo ov9281”, and it is the one located at “/lib/modules/5.10.46-v7l+/kernel/drivers/media/i2c/ov9281.ko”. Everything as expected so far.
But checking the dmesg I see the following error:
[ 7.098148] ov9281 10-0060: Unexpected sensor id(d0fc2400), ret(-5)
And I also have no device at /dev/video0.
As you can see above, my kernel version is 5.10.46-v7l+
I see that the v4l2 driver here: https://github.com/raspberrypi/linux/blob/rpi-5.10.y/drivers/media/i2c/ov9281.c only supports a 2 lane MIPI CSI-2 interface to the camera. But I can physically see that the module I have has only 1 data lane, and 1 clock lane. So it isn’t surprising to me that is doesn’t work.
Here is a picture showing that only 1 differential data lane and 1 clock lane is electrically connected. The picture is accurate to the real module.
The mapping can be found here: https://www.robotshop.com/media/files/content/a/adu/pdf/arducam-ov9281-1mp-mono-global-shutter-mipi-camera-raspberry-pi-datasheet.pdf
You can see that the differential pair on the very right is data lane 0, and then there is the clock lanes further left to it.What I don’t understand is, how is the claim justified that it has a working v4l2 driver ? Am I missing the driver ? Where is it ?
7.What attempts at troubleshooting have you already made?
8.How would you like us to help you?
through the forum, by providing a working v4l2 driver