Enable TC358743 on JetPack 6 (Jetson Orin Nano)

Issue Overview

Users are experiencing difficulties enabling the TC358743 HDMI-CSI bridge on the Jetson Orin Nano while using JetPack 6 (R36.3.0). The main symptoms include an inability to read HDMI output through the TC358743, which is essential for displaying HDMI output on the Jetson device. This issue arises during the setup phase when attempting to configure the HDMI output for use with applications that require video input. The hardware involved includes the Jetson Orin Nano Developer Kit and the TC358743 bridge, which may not be properly configured or supported in the current software version. Users have reported inconsistent results, with some being unable to achieve any output, while others have found partial success with alternative methods. The problem significantly impacts user experience, especially for those developing applications that rely on video input.

Possible Causes

• Hardware Incompatibilities: The TC358743 may not be fully supported by JetPack 6, leading to compatibility issues.
• Driver Issues: Lack of proper drivers for the TC358743 could prevent successful communication between the hardware and software.
• Configuration Errors: Incorrect settings or configurations in the software may hinder the detection or functionality of the HDMI-CSI bridge.
• Software Bugs: As JetPack 6 is still in a developer preview phase, bugs may exist that affect its stability and functionality.
• Environmental Factors: Power supply issues or overheating could affect performance and lead to failures in enabling hardware components.

Troubleshooting Steps, Solutions & Fixes

1. Check Driver Support:

   • Verify if the Lontium LT6911UXC HDMI-CSI bridge driver is compatible and properly configured for your setup.
   • Refer to the source code at $public_sources/kernel_src/kernel/nvidia-oot/drivers/media/i2c/lt6911uxc.c for details on driver implementation.

2. Review Documentation:

   • Consult relevant guides such as RidgeRun’s guide for specific instructions on setting up the TC358743 with Jetson devices.

3. Update Firmware and Software:

   • Ensure that your Jetson Orin Nano is running the latest firmware compatible with JetPack 6. If necessary, update using SDK Manager.
   • Consider downgrading to JetPack 5 if issues persist, as it may offer better stability for initial setups.

4. Force Recovery Mode:

   • If experiencing boot issues or device recognition problems, place your board into Force Recovery Mode by shorting pins 9 and 10 on the Button Header while powering on.

5. Testing Hardware Configuration:

   • Test with different HDMI cables and displays to rule out hardware faults.
   • Isolate the issue by connecting only essential components and gradually adding peripherals.

6. Use Terminal Commands for Diagnostics:

   • Gather system information by running commands like:

     sudo apt update
     sudo apt install -y v4l-utils
     v4l2-ctl --list-devices
     

   • Check if the TC358743 is recognized in /dev.

7. Explore Alternative Solutions:

   • If direct support for TC358743 is lacking, consider using other compatible HDMI-CSI bridges known to work with Jetson devices.
   • Engage with community forums or support channels for additional insights and shared experiences from other developers.

8. Best Practices:

   • Always ensure that power supply specifications match those recommended for your Jetson device to prevent damage.
   • Regularly check for updates from NVIDIA regarding driver support and software patches that may address existing issues.

By following these steps, users can systematically diagnose and resolve issues related to enabling the TC358743 on their Jetson Orin Nano devices. Further investigation may be required if problems persist despite these troubleshooting efforts.