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I understand your concern about creating pinmux files for your Jetson Orin Nano board. I’ll provide a detailed answer to help you resolve the issue.
Board Name
The board name is a crucial piece of information when creating pinmux files. The NVIDIA Jetson Linux Developer Guide recommends using a unique and descriptive name for your board. In your case, you used the default name “Orinjetson orin nanoampnx,” which might not be the best choice.
Recommended Board Name
For the Jetson Orin Nano, you should use a name that reflects the module and carrier board combination. For example, if you’re using the Jetson Orin Nano module with the Jetson Orin Nano Carrier board, you could use a name like “orin-nano-devkit” or “orin-nano-custom-board.”
Pinmux File Naming Convention
The pinmux file naming convention is important to ensure that the files are correctly identified and used by the system. The recommended naming convention is:
<board_name>_pinmux_<mode>_<type>.dtsi
Where:
<board_name> is the name of your board (e.g., “orin-nano-devkit”)<mode> is the mode of operation (e.g., “default”)<type> is the type of pinmux file (e.g., “dpgpio,” “dppadvoltage,” or “dppinmux”)
Comparison with Existing Files
You mentioned that the generated files seem small compared to the other files in the SDK. This is expected, as the generated files only contain the pinmux configuration for your specific board.
The existing files in the SDK are likely generic files that provide a default pinmux configuration for various boards. Your generated files will override these default configurations with your custom settings.
Replacing Existing Files
You don’t need to replace the existing files in the SDK. Instead, you should place your generated files in the designated directories, as you’ve already done.
SDK Manager
You won’t find an option to define the board name in the SDK Manager. The board name is typically defined in the device tree files or in the pinmux configuration files.
Conclusion
To resolve the issue, try the following:
- Rename your board to a unique and descriptive name, such as “orin-nano-devkit” or “orin-nano-custom-board.”
- Regenerate the pinmux files using the new board name.
- Place the generated files in the designated directories.
- Verify that the GPIO settings have changed correctly.
If you’re still experiencing issues, feel free to provide more details, and I’ll be happy to help you troubleshoot the problem.
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