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Hello guys,

I've been working with Sixfab LTE shield, Asus Tinker Board S and Quectel EC25-AU boards. Connection between Sixfab LTE shield and Asus Tinker Board S is over USB cable, that sometimes gave me this error.

Code:
[  563.135522] dwc2 ff540000.usb: hcint 0x00000002, intsts 0x04400009
[  593.157440] dwc2 ff540000.usb: dwc2_hc_chhltd_intr_dma: Channel 7 - ChHltd set, but reason is unknown
[  593.170337] dwc2 ff540000.usb: hcint 0x00000002, intsts 0x04600009
[  594.158947] dwc2 ff540000.usb: dwc2_hc_chhltd_intr_dma: Channel 4 - ChHltd set, but reason is unknown
[  594.171883] dwc2 ff540000.usb: hcint 0x00000002, intsts 0x04600009
[  597.158322] dwc2 ff540000.usb: dwc2_hc_chhltd_intr_dma: Channel 12 - ChHltd set, but reason is unknown
[  597.171377] dwc2 ff540000.usb: hcint 0x00000002, intsts 0x04600009
[  600.160826] dwc2 ff540000.usb: dwc2_hc_chhltd_intr_dma: Channel 3 - ChHltd set, but reason is unknown
[  600.173820] dwc2 ff540000.usb: hcint 0x00000002, intsts 0x04600009

This error affects in Tinkerboard performance (it crashes sometimes) and internet connection (no connection over 3G/LTE).
Any info will be very helpful.
Best regards!
Did you see this in idle or during data transmission?

Thanks a lot!
(07-06-2020, 06:22 AM)leslie_yu Wrote: [ -> ]Did you see this in idle or during data transmission?

Thanks a lot!

Hi Leslie,

I don't know if it is in idle or data transmission, I think maybe is with data transmission because tinkerboard is always "connected" to internet with sixfab. I've searched this log error and everything refers to kernel or usb cable error. I have many of these tinker boards and it happens randomly in few of them.

PS: Kernel version I'm using is:
Code:
4.4.132+
We are trying to repeat this. Will keep you posted.
Did you see this in idle or during data transmission?
(07-20-2020, 02:22 AM)leslie_yu Wrote: [ -> ]We are trying to repeat this. Will keep you posted.

i'll wait for your answer, thanks!