New question #819543 on Ubuntu-Certification:
https://answers.launchpad.net/ubuntu-certification/+question/819543

I am trying to get raspberry pi cameras using the imx708 chip to work on a 
raspberry pi 5.
On Raspberry pi 4 24.04, no problem.

Not so on Pi 5.    The Pi 4 uses a bcm2835 chip.   The Pi 5 uses bcm2711?  
these are apparently incompatible.

This is most likely due to a a kernel or missing overlay.

PI 4 works fine!

ubuntu@ubuntu:/opt/ros$ v4l2-ctl --list-devices
bcm2835-codec-decode (platform:bcm2835-codec):
        /dev/video10
        /dev/video11
        /dev/video12
        /dev/video18
        /dev/video31
        /dev/media4

bcm2835-isp (platform:bcm2835-isp):
        /dev/video13
        /dev/video14
        /dev/video15
        /dev/video16
        /dev/video20
        /dev/video21
        /dev/video22
        /dev/video23
        /dev/media1
        /dev/media3

unicam (platform:fe801000.csi):    ########## NOTEUNICAM
        /dev/video0
        /dev/media0

rpivid (platform:rpivid):
        /dev/video19
        /dev/media2


PI 5:  does not detect bcm2835-codec-decode (platform:bcm2835-codec):

v4l2-ctl --list-devices
pispbe (platform:1000880000.pisp_be):
/dev/video20
/dev/video21
/dev/video22
/dev/video23
/dev/video24
/dev/video25
/dev/video26
/dev/video27
/dev/video28
/dev/video29
/dev/video30
/dev/video31
/dev/video32
/dev/video33
/dev/video34
/dev/video35
/dev/video36
/dev/video37
/dev/media1
/dev/media4

rp1-cfe (platform:1f00110000.csi):
/dev/video0   <   device detected    not in unicam
/dev/video1
/dev/video2
/dev/video3
/dev/video4
/dev/video5
/dev/video6
/dev/video7
/dev/media0

rp1-cfe (platform:1f00128000.csi):
/dev/media3

rpivid (platform:rpivid):
/dev/video19    <  huh?   expecting video0  in unicam
/dev/media2




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