IMX708/ Pi Cam 3 not initializing on Pi Zero 2W

[Stuart Watt]

Armbianmonitor:

https://paste.armbian.com/buvetusife

I'm struggling to get the Pi Camera 3/IMX708 detected by the Zero 2W. It's an IMX708 sensor, and that is correctly showing in dmesg, but the V4L2 devices (/dev/video0, /dev/video1) for the camera are not set up. All the normal encoder devices are fine.

 

I'm using a custom build but it's essentially minimal (and no desktop) current with trixie and no extensions, following the standard command for building an image. 

 

The dmesg log reads as follows:

 

[   10.719672] imx708 10-001a: camera module ID 0x0302
[   10.719876] imx708 10-001a: ctrl(id:0x9f0902,val:0x232aaf80) is not handled
[   10.722275] imx708 10-001a: ctrl(id:0x9e0902,val:0x2b20) is not handled

 

But I don't think this is problematic, as stock Raspbian shows precisely the same log messages, and it does correctly set up the devices. 

 

I've added the overlay and turned off (or tried to) the camera auto detection, but the imx708 messages were being logged even before I added the overlay, so I am not sure it was needed. In any event, nothing changed. 

 

Any thoughts on ways to get this up and running?

[eselarm]

What is your plan with that camera?

My latest try with raspbian (armv6) trixie based failed w.r.t. V4L2. So that is with start.elf, not start_x.elf. The latter works fine on bookworm based raspbian for camara v1. Camera v3 never worked with legacy firmware mode (start_x=1), so needs libcamera. For easy handling, the latest RPL variant of libcamera named rpicam should work, but then you'll be essentially back to RaspberryPiOS.

 

If you have standard Debian Trixie based, all that modified libcamera is not there and more important, you will have other firmware files (bootcode.bin start.elf fixup.dat). Armbian takes the version from Ubuntu AFAIK, Debian is yet another version as is the latest from RaspberryPiOS (64-bit patched Debian or 32-bit patched and re-compiled Raspbian). The package name is raspi-frmware, check which versions there are with sudo apt list -a raspi-frmware and in addition, the 3 files themselves, I did timestamp or suffix them with sha256sum in the past on order to keep track of the various ones delivered for various OSses and images.

 

I assume the Armbian kernel is compiled from same RPi kernel tree as RaspberryPiOS, so overlays for the v3 camera should be there and functionally the same.

 

I currently have 1 camera v1 base RPI3B+ running, still bookworm, but I might boot it with Debian Trixie/Sid and see what mainline libcamera does. Probably then Armbian bcm2711 edge kernel, at least something that provides overlays as Debian kernels have almost none, at least not for camera sensors.

 

Edited 1 hour ago by eselarm