USB 2.0 x 10P Wafer USB Speed

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rikba
rikba New Member Posts: 4 ✭
in UP Squared Linux

Hello

Up2: UPS-APLP4-A20-0864
USB 2.0 pin header: EP-CBUSB10PFL01
Linux Ubuntu Server 16.04.3: Linux moa 4.15.0-37-generic #40~upboard04-Ubuntu SMP Thu Feb 14 13:49:37 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
BIOS: UPA1AM42

We are trying to use the USB 2.0 ports on the 10 pin header. The USB on pin 1-4 (USB_HSIC_P3) works well with high speed (USB 2.0, 480 Mbit/s), the USB on pin 5-8 (USB_HSIC_P4_D) always falls back to full speed (USB 1.0, 12 Mbit/s).

When connecting a high speed device to the malfunctioning port dmesg -wH reports:

[Oct 1 18:35] usb 1-8: new high-speed USB device number 3 using xhci_hcd
[  +0.899958] usb usb1-port8: Cannot enable. Maybe the USB cable is bad?
[  +0.127938] usb 1-8: new high-speed USB device number 4 using xhci_hcd
[  +0.967972] usb usb1-port8: Cannot enable. Maybe the USB cable is bad?
[  +0.000149] usb usb1-port8: attempt power cycle
[  +1.283677] usb usb1-port8: Cannot enable. Maybe the USB cable is bad?
[  +0.967913] usb usb1-port8: Cannot enable. Maybe the USB cable is bad?
[  +0.000146] usb usb1-port8: unable to enumerate USB device

We tried different cables, another UP2 board and different high speed USB devices but no success.

Did anyone experience the same?

Can we do anything in the BIOS settings?

Cheers

Rik

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