Unable to Capture Images with MIPI Camera on Nvidia Jetson Orin Nano Dev Board

Issue Overview

Users have reported issues with the Nvidia Jetson Orin Nano Dev board where a MIPI camera module fails to capture images. The primary symptom is that the low-power (LP) voltage level in the MIPI signal, which should typically be around 1.2V, is observed to drop to between 0.8V and 0.9V when connected to the Orin Nano. This voltage drop prevents the camera from functioning correctly. In contrast, the same camera module operates normally when connected to other Jetson boards, such as the Orin AGX, where the voltage levels remain stable.

The issue arises specifically when using JetPack version 5.1.1 and has been confirmed not to affect other Jetson models, including previous versions of the Jetson Nano and Xavier NX. Users have indicated that the camera can connect successfully to the AGX Orin via an adapter board, suggesting that the problem is isolated to the Orin Nano and potentially its design.

The problem appears to be consistent across multiple devices tested by users, indicating a systemic issue rather than isolated hardware failures.

Possible Causes

• Hardware Incompatibilities: The design of the Orin Nano may not be fully compatible with certain camera modules, particularly those sourced from FPGA outputs.

• Cable Issues: Users have identified that using an inappropriate or substandard FFC cable can lead to significant voltage drops, which directly impacts camera functionality.

• Software Configuration: There may be misconfigurations in the device tree settings related to lane polarity or CSI port connections that could contribute to this issue.

• Driver Issues: Potential bugs or incompatibilities in the drivers provided with JetPack 5.1.1 could affect how MIPI signals are managed.

• Environmental Factors: External factors such as power supply stability could also influence performance, although this was less frequently mentioned in discussions.

• User Errors: Misconnections or incorrect configurations by users might lead to problems, though this was not a primary concern in this case.

Troubleshooting Steps, Solutions & Fixes

1. Verify Hardware Connections:

   • Ensure that the MIPI camera is properly connected to the correct CSI port on the Orin Nano.
   • Confirm that you are using a suitable FFC cable (15-to-22 pin) that meets specifications; avoid thin cables that may cause voltage drops.

2. Check Device Tree Configuration:

   • Confirm that lane_polarity=6 is correctly added in the device tree for connections made to CSI0 (serial_a). This may resolve issues related to signal integrity.

3. Test with Different Hardware:

   • If possible, test with a different camera module or a standard sensor module instead of one sourced from an FPGA to isolate whether the issue is related to specific hardware.

4. Inspect Power Supply:

   • Ensure that the power supply used for the Orin Nano is stable and within required specifications to prevent voltage fluctuations affecting performance.

5. Update Software and Drivers:

   • Check for any available updates for JetPack or drivers that might address known issues with MIPI camera support on the Orin Nano.

6. Conduct Voltage Level Testing:

   • Use a multimeter or oscilloscope to measure LP voltage levels at different points in your setup to identify where the drop occurs.

7. Document Findings:

   • Keep a record of any changes made during troubleshooting and their outcomes for future reference or further assistance requests.

8. Seek Community Support:

   • If issues persist after following these steps, consider reaching out on forums or Nvidia’s support channels with detailed descriptions of your setup and troubleshooting attempts.

9. Best Practices for Future Use:

   • When setting up new hardware configurations, always verify compatibility and follow manufacturer guidelines for connections and configurations.

10. Unresolved Aspects:

    • While some users have resolved their issues by identifying cable-related problems, further investigation may be needed into potential design limitations of the Orin Nano itself regarding MIPI signal handling.

By following these steps and recommendations, users should be able to diagnose and potentially resolve issues related to MIPI camera connectivity on their Nvidia Jetson Orin Nano Dev board effectively.