iMX8m mini Kernel USB gadget fault

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iMX8m mini Kernel USB gadget fault

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inigo_irisbond
Contributor I

Dear NXP Support Team,

We are working on Linux Debian based embedded device with a kernel version 4.19.35.  We are working with an iMX8Mmini, and we are configuring it as USB port device; our device is connected to tablets (as Host) via USB communicationOur application works well when the device we are connecting to is awake, however, we have an error after that device goes to suspend-wake up.In these cases, we can observe, from the Linux side, that EP1 and EP2 endpoints (write and read endpoints) are blocked. At Kernel level, we can see the following error coming from the configs-gadget module:

# [   26.043343] configfs-gadget gadget: End Point Request ERROR: -108
# [   26.118312] configfs-gadget gadget: high-speed config #1: c

Could you please advise on how to resolve this issue?

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AldoG
NXP TechSupport
NXP TechSupport

Hello,

Unfortunately we do not support Debian, could you please try with Linux kernel and see if the same issue can be replicated?

Best regards/Saludos,
Aldo.

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inigo_irisbond
Contributor I

Sorry, I don't understand you, what do you mean by trying with the Linux kernel?

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