[GC2035 camera driver is unavailable at sunxi-next 4.13.6 kernel ?]

On ‎6‎/‎28‎/‎2018 at 4:56 PM, dando said:

@Igor and @@lex, thank you for the fast response!

 

I decided to also prepare an SD card with the legacy kernel, so I compiled one image with 3.4.113 and Debian Jessie server.

So far the OS seems to be running fine.

 

I plan on using a non-standard hardware for a hobby project. However, I have not yet hooked up a camera on the CSI (nor on the USB) port.

In case everything has been built properly, should there be a /dev/video0 device after I modprobe the vfe_v4l2 module, despite that there is nothing connected?

 

On my board I tried it and had the following recorded in the system log (I found it out with dmesg):

[VFE_ERR]Error registering v4l2 subdevice No such device!

Then I uncommented vfe_v4l2 in /etc/modules and rebooted, but there is still no /dev/video0 device

Of course, modprob-ing the gc2035 module resulted in an error that the target chipset was not found.

 

Thanks in advance!

If I remember correctly, at some point the legacy branch the gc2035 module wasn't functional anymore I think it's since 5.24, but I'm not sure. I had to downgrade to get my gc2035 camera again.

 

Regards

[Armbian 5.25 on OrangePI PC: The gc2035 video camera doesn't work]

Ok pinned the problem : it is the boot.cmd/boot.scr which is NOT updated with a straight upgrade from 5.20 to >=5.25. 

Let's resume this :

- if you load the original boot.cmd from 5.20, gc2035/vfe_v4l4 simply work.

- if you load the updated boot.cmd from 5.25/5.26/5.27 gc2035/vfe_v4l2 stop to work (croaking about CSI not able to detect a target chip).

 

That's all folks!

Now should someone versed in u-boot parameters arcanes invest some time to see what's the real difference which impacts gc2035/vfe_v4l2, and eventually corrects/documents it to everybody potentially banging their head about this in the future ?

 

Regards,

[OPI ONE server Legacy 3.4.113 Segmentation fault on unload module vfe_v4l2]

Hi,

 

Got exactly the same problem with an orange pi lite, 5.25 server. I had to downgrade to 5.20 kernel (3.4.112) in order to use my gc2035.

 

Regards