The tegracam_v4l2subdev_register registration succeeded, but no video node was generated under /dev/

Robotics & Edge Computing Jetson Systems Jetson AGX Orin
1

My camera driver is already working, but no video node has been generated.

Below is my code snippet and the related log.

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What is causing this issue? Could you please help resolve it? I would greatly appreciate it.

Best Regards guys!

2

*** Please note that this reply is generated by LLM automatically ***

Based on the provided information, it seems like you’re experiencing an issue with your camera driver on the Jetson AGX Orin, where no video node is being generated despite the driver working correctly.

To help resolve this issue, let’s break down the possible causes and potential solutions:

  1. Device Tree Configuration: Ensure that your device tree configuration is correct and properly set up for the camera module. You can refer to the “Camera Sensor Drivers Porting” section in the provided documentation, specifically the “Changes to Device Tree Properties” and “Device Tree” subsections.

  2. V4L2 API: Verify that your camera driver is correctly implementing the V4L2 API. You can check the “Camera Sensor Drivers Porting” section, specifically the “Changes for the V4L2 API” subsection.

  3. CSI Connectivity: Make sure that the CSI connectivity is properly configured for the Jetson AGX Orin. You can refer to the “Jetson Virtual Channel with GMSL Camera Framework” section, specifically the “CSI Connectivity” subsection.

  4. Driver Framework: Ensure that your driver is correctly using the driver framework. You can refer to the “Jetson Virtual Channel with GMSL Camera Framework” section, specifically the “Driver Framework” subsection.

  5. Mode Tables: Verify that the mode tables are correctly configured for your camera module. You can refer to the “Mode Tables” section, specifically the “To add a register mode table” and “Register mode table considerations” subsections.

  6. Known Issues: Check the “Known Issues” section in the provided documentation to see if there are any known issues related to the Jetson AGX Orin or camera drivers that might be causing the problem.

To further troubleshoot the issue, you can try the following:

  • Check the kernel logs for any error messages related to the camera driver or device tree configuration.
  • Use tools like v4l2-ctl or media-ctl to verify that the camera driver is correctly registered and configured.
  • Try to capture a video stream using a tool like gst-launch or ffmpeg to see if the issue is specific to your application or a more general problem with the camera driver.

If none of these suggestions help resolve the issue, please provide more details about your code snippet and the related log images, and I’ll do my best to assist you further.

*** Please give the thumbs up if you get answers you like. Or provide feedback to help us improve the answer. ***

3

owl_debug.tar.gz (8.0 KB)

The attachment contains my driver file and DTS file. Could you please take a look? I have reviewed them multiple times and found no errors, yet the video node is not being generated. The first five sensors successfully generate video nodes, but the last one—AR0234—does not.Thank you very much

5

The .bound and .complete function need to be called to generate the video node.

Add print to these functions to debug into it to know the problem.

Thanks