I am using the orin-nano to load the Max96712 via the ko method. However, during the debugging process, the Max96712 fails to load, and I2Cdetect cannot detect the I2C address of the Max96712. I would like to know what the potential issues could be. Attached is the current DTS file.
nvidia@tegra-ubuntu:~$ cat /etc/nv_tegra_release
R35 (release), REVISION: 6.2, GCID: 40633251, BOARD: t186ref, EABI: aarch64, DATE: Fri May 16 02:08:18 UTC 2025
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To address the issue of the Max96712 failing to load and the I2C address not being detected during the debugging process on the Jetson Orin Nano, we need to consider several potential issues. Given the context, these issues can be broadly categorized into hardware, software, and configuration problems.
Hardware Issues
Physical Connection: Ensure that the Max96712 is properly connected to the Jetson Orin Nano. Verify that the I2C pins are correctly wired and not damaged.
Power Supply: Confirm that the Max96712 is receiving the appropriate power supply. Incorrect voltage levels can prevent the device from functioning correctly.
I2C Bus: The I2C bus can be a point of failure. Other devices on the same bus might be interfering with the communication. Check for any other devices on the I2C bus that could be causing conflicts.
Software Issues
Device Tree (DTS) Configuration: The DTS file provided seems to be related to the camera configuration. Ensure that the Max96712 is correctly configured in the device tree. The device tree should specify the I2C address, clock speed, and any other necessary parameters for the Max96712.
Kernel Modules: If the Max96712 requires specific kernel modules to be loaded, ensure these are properly compiled and loaded. The “ko method” mentioned suggests a kernel module is being used, so verify that this module is correctly installed and loaded.
I2C Support: Confirm that the Jetson Orin Nano’s kernel supports I2C and that the I2C driver is properly configured and loaded.
Configuration Issues
I2C Address: Verify that the I2C address of the Max96712 is correctly set in the software and matches the physical configuration of the device. The i2cdetect command not detecting the device suggests a possible mismatch or configuration issue.
Clock Speed: Ensure that the I2C clock speed is set appropriately for the Max96712. Some devices may not work correctly at higher clock speeds.
Pin Configuration: The Tegra234 pinmux driver is mentioned, indicating that pin configuration might be relevant. Ensure that the pins used for I2C communication are correctly configured as I2C pins and not used for another purpose.
Comparison with Provided Context
The context mentions several components and peripherals, including camera modules (max9295d, imx415), which might be relevant if the Max96712 is part of a camera system. However, without specific details on how these components interact with the Max96712, it’s challenging to draw direct comparisons.
The mention of MIG profiles (MIG 7g.141gb, MIG 7g.96gb, MIG 4g.48gb) suggests different configurations or profiles for the system, but without more information, it’s unclear how these might affect the Max96712’s operation.
The nvarguscamerasrc Plugin and the discussion around camera software development solutions might be relevant if the issue is related to camera functionality, but this seems tangential to the primary issue of the Max96712 not being detected on the I2C bus.
Next Steps
Review Device Tree Configuration: Carefully review the DTS file to ensure the Max96712 is correctly configured.
Verify I2C Communication: Use tools like i2cdump or i2cget to try and communicate with the Max96712, if possible, to isolate the issue.
Check Kernel Logs: Look for any error messages related to I2C or the Max96712 in the kernel logs.
Physical Inspection: Perform a physical inspection of the board and connections to ensure everything is correctly connected and not damaged.
By systematically addressing these potential issues, you should be able to identify and resolve the problem preventing the Max96712 from loading and being detected on the I2C bus.
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I flashed again, and the post-ko file can load normally, and I haven’t reproduced yesterday’s problem yet. Based on the same version of DTS, I can’t catch raw, dmesg and trace log when using v4l2 command as follows. According to the CSI analysis (Jetson/l4t/Camera BringUp - eLinux.org), I still can’t clearly know where the setting problem is, or please help analyze and explain. Uploading: trace-4lane.txt…
