Error in MIPI Connection Setup with Xilinx FPGA on Nvidia Jetson Orin Nano

Issue Overview

Users are experiencing errors while attempting to capture images using the Nvidia Jetson Orin Nano Dev board in conjunction with a Xilinx FPGA. The issue arises specifically when using the V4L2 (Video for Linux 2) framework to simulate the IMX219 MIPI connection.

Symptoms

• Users encounter a series of error messages when executing the following command:

  v4l2-ctl --device /dev/video0 --set-fmt-video=width=3280,height=2464,pixelformat=RG10 --stream-mmap --stream-to=./output_3280x2464_RG10_001.raw --stream-count=1
  

• Notable error messages include:
  • bwmgr API not supported
  • uncorr_err: request timed out after 2500 ms
  • NULL VI channel received
  • vi capture setup failed

Context

• The problem occurs during the image capture setup phase.
• It is linked to the configuration of the embedded_stetata-high field in the tegra234-camera-rbpcv2-imx219.dtsi file, which should be set to a specific value for proper operation.

Frequency

• The issue appears to be consistent among users attempting similar setups.

Impact

• This problem significantly hampers the ability to capture images, affecting the overall functionality of applications relying on image processing.

Possible Causes

• Configuration Errors: Incorrect settings in the tegra234-camera-rbpcv2-imx219.dtsi file can lead to communication failures between the FPGA and the Orin Nano.

• Driver Issues: Incompatibilities or bugs in the V4L2 drivers may result in failure to establish a proper video stream.

• Hardware Incompatibilities: Potential mismatches between the Xilinx FPGA and the Nvidia Jetson Orin Nano could cause communication issues.

• Environmental Factors: Insufficient power supply or overheating could affect device performance and lead to timeouts.

• User Errors: Misconfigurations or incorrect command usage by users may contribute to these errors.

Troubleshooting Steps, Solutions & Fixes

1. Verify Configuration Settings:

   • Ensure that the embedded_stetata-high field in your device tree source file (tegra234-camera-rbpcv2-imx219.dtsi) is correctly configured.
   • Set it to a valid value (not zero) and recompile your device tree.

2. Check Driver Compatibility:

   • Update your V4L2 drivers to the latest version compatible with your Jetson Orin Nano.
   • Verify if any known issues exist with your current driver version.

3. Test Hardware Connections:

   • Inspect all physical connections between the Xilinx FPGA and the Jetson Orin Nano.
   • Ensure that all cables are secure and functioning properly.

4. Power Supply Check:

   • Confirm that your power supply meets the requirements for both devices.
   • Consider using a dedicated power source for testing.

5. Run Diagnostic Commands:

   • Use diagnostic commands to gather system information:

     dmesg | grep tegra
     v4l2-ctl --list-formats-ext
     

   • Review logs for additional error messages that could provide insights into the issue.

6. Isolate Components:

   • If possible, test with another camera module or FPGA setup to determine if the issue is specific to your current hardware configuration.

7. Consult Documentation:

   • Refer to Nvidia’s official documentation for any updates or patches related to camera support on Jetson devices.
   • Check forums and community discussions for similar issues and solutions shared by other users.

8. Recommended Approach:

   • If several users reported success by adjusting configurations in their device trees, consider this as a primary troubleshooting step before further diagnostics.

9. Future Prevention:

   • Regularly update firmware and drivers.
   • Maintain backups of working configurations for quick recovery from issues.

Unresolved Aspects

• Further investigation may be required into specific hardware compatibility issues or potential bugs within V4L2 that have not yet been documented.