Orin Nano HDMI / DP to MIPI DSI Conversion Issues

Issue Overview

The discussion revolves around the challenges users face when attempting to convert HDMI or DisplayPort (DP) signals to MIPI DSI for use with the Nvidia Jetson Orin Nano Dev board. Users are specifically looking for recommendations on how to achieve this conversion, as the board does not natively support MIPI DSI output.

Symptoms and Context

• Users have reported difficulties in finding a suitable method or hardware solution for converting HDMI or DP outputs to MIPI DSI.
• The issue arises during the setup phase when users attempt to connect displays that require MIPI DSI input.
• The conversation indicates that users possess DSI displays and are seeking external hardware solutions for compatibility.
• The issue appears to be consistent, as multiple users have expressed similar needs without satisfactory solutions being provided.

Impact on User Experience

The inability to convert HDMI or DP signals to MIPI DSI limits the usability of certain displays with the Orin Nano Dev board, thereby affecting the overall functionality and flexibility of the development platform.

Possible Causes

• Hardware Incompatibilities: The Jetson Orin Nano does not support MIPI DSI output directly, leading users to seek external solutions.

• Lack of Support: Official support for this specific use-case is absent, as indicated in the responses, which may leave users without clear guidance on available options.

• External Hardware Limitations: Users may encounter difficulties in finding compatible external hardware that can effectively perform the conversion.

Troubleshooting Steps, Solutions & Fixes

Step-by-Step Instructions for Diagnosing the Problem

1. Identify Display Requirements: Confirm the specifications of your display, ensuring it indeed requires MIPI DSI input.

2. Check Board Outputs: Verify that your Jetson Orin Nano is functioning correctly by testing its HDMI and DP outputs with a compatible monitor.

3. Research External Solutions: Look for third-party hardware converters that can bridge HDMI/DP to MIPI DSI.

Commands and Procedures

• Use the following command to check connected displays and their outputs:

  xrandr
  

Isolating the Issue

• Test different configurations by connecting various displays directly to the board’s HDMI or DP ports to confirm they work without conversion.

• If available, try using a different external converter to determine if the issue lies with a specific hardware solution.

Potential Fixes or Workarounds

• Use Direct Outputs: If feasible, utilize displays that accept direct HDMI or DP connections rather than converting to MIPI DSI.

• External Converters: Research and procure an external hardware solution designed specifically for converting HDMI/DP signals to MIPI DSI.

Documentation and Best Practices

• Regularly check Nvidia’s official documentation for any updates regarding supported display outputs and recommended hardware solutions.

• Consider community forums and user groups for shared experiences and recommendations on effective converters.

Unresolved Aspects

There remains a lack of definitive recommendations from official sources regarding specific external hardware solutions for this conversion. Further investigation into user experiences with various converters may provide additional insights.