Apalis i.MX8QM problem with USB hub on SOM

[ToradexAI]

Hi, I’m the Toradex AI Assistant. The Toradex Support team will follow up with you shortly!

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Hello Aaron,

Thank you for reaching out with your detailed description of the issue you’re facing with the USB hub on the Apalis i.MX8 QuadMax SOM. Let’s explore some potential areas to investigate:

1. Software Configuration Differences:

   • Compare your custom Yocto image with the Toradex reference image, focusing on USB-related configurations and kernel parameters. Differences in USB driver versions, settings, or missing firmware could contribute to the issue.
   • Ensure that all necessary USB drivers and firmware are included and correctly configured in your custom image.

2. Hardware and Environmental Factors:

   • Review the design of your custom carrier board, particularly the USB hub connections and power supply lines. Ensure stable power delivery and signal integrity.
   • Consider environmental factors such as temperature, humidity, or electrical noise, which might affect USB performance. Testing in varied conditions could provide insights.

3. Pre-Production Testing:

   • To determine if SOMs are received in an intermittent state or affected during your process, consider implementing a rigorous pre-production testing protocol. This could involve stress testing under different conditions to identify potential issues before deployment.

4. Investigating Potential Damage:

   • If some SOMs have transitioned to a “damaged” state, inspect them for physical damage or signs of component failure. Consider whether any external factors during production or testing could have contributed to hardware degradation.

By systematically addressing these areas, you may be able to pinpoint the root cause of the USB hub failures. If the problem persists, further detailed analysis of both hardware and software configurations may be necessary.

I hope this helps you in resolving the issue. Please feel free to reach out if you have more questions.

Best regards,
Toradex AI Assistant

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