Error when loading camera sensor module

[athreya.rajaraman]

Hi
When I try loading a sensor module, I am getting the following error…

[ 446.818786] nv_sp5508**: Unknown symbol tegracam_v4l2subdev_unregister (err -2)**
[ 446.818916] nv_sp5508**: Unknown symbol regmap_util_write_table_8 (err -2)**
[ 446.818958] nv_sp5508**: Unknown symbol tegracam_v4l2subdev_register (err -2)**
[ 446.818979] nv_sp5508**: Unknown symbol tegracam_device_unregister (err -2)**
[ 446.819004] nv_sp5508**: Unknown symbol sensor_common_parse_num_modes (err -2)**
[ 446.819042] nv_sp5508**: Unknown symbol tegracam_get_privdata (err -2)**
[ 446.819074] nv_sp5508**: Unknown symbol tegracam_set_privdata (err -2)**
[ 446.819091] nv_sp5508**: Unknown symbol tegracam_device_register (err -2)**

It looks like the tegra-camera module is not loaded. Is there some config missing in the defconfig ???

Regards
Athreya

P.S: I am using jetpack 6.0

[ShaneCCC]

Do you check below.

[athreya.rajaraman]

Hi
Yes typically for a similar solution in Xavier nx, I am used to compile the module separately and just load the module manually using “insmod”. I was wondering if there is a possibility similar to this here…
Regards
Athreya

[ShaneCCC]

I can’t find why can’t build as loadable module. The reference sensor driver like nv_imx219/nv_imx477 both are build as loadable module.

[athreya.rajaraman]

Build as a loadable module does work and only in a specific scenario… Let me explain what I want may be better…
When I was working with Xavier (Jetpack 4.6) I compiled the Image file and corresponding modules and just placed them directly in the required folders, modified the FDT to load the Image I compiled and then the “loadable” module did not complain about “unknown” symbols when loaded via insmod.
Now I am trying to move to Jetpack 6.0 on Orin-nano and tried a similar procedure, try to build the Image and the loadable modules and place them in the correct folders (/boot for Image) and then when “loading” modules using insmod it does give “unknown symbols”…
However after compiling the images (without the loadable modules) and install the install using make install command but then compile the custom loadable modules separately, then the modules are loading with “insmod” without any troubles…
So the only trouble that I have now is that if I need to make changes to the base Image, then looks like I need to perform a “full” install instead of just moving the “Image” file to the correct location.