Khadas VIM3 + M2X Board. USB is dead

Technical Support
1

Hi, friends. Yesterday both USB ports have stopped working. No other device is detected. Used only as a router. Was connected only Quectel EM06 to M2X Extension board.

Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

dmesg | grep USB

[    0.139156] usbserial: USB Serial support registered for generic
[    0.146421] usbhid: USB HID core driver
[    0.531928] dwc3-meson-g12a ffe09000.usb: USB2 ports: 2
[    0.531946] dwc3-meson-g12a ffe09000.usb: USB3 ports: 1
[    0.536021] xhci-hcd xhci-hcd.0.auto: new USB bus registered, assigned bus number 1
[    0.536344] xhci-hcd xhci-hcd.0.auto: new USB bus registered, assigned bus number 2
[    0.536355] xhci-hcd xhci-hcd.0.auto: Host supports USB 3.0 SuperSpeed
[    0.536460] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.03
[    0.536470] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    0.536772] hub 1-0:1.0: USB hub found
[    0.537136] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.03
[    0.537145] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    0.537406] hub 2-0:1.0: USB hub found

Is it possible to get support or do I have to buy a new device?

2

Hello @BytEvil
It seems your USB hub chip has been damaged, you will need to purchase a new device or replace the onboard chip by yourself if outside warranty period.

Regards.

3

Hi. Which chip needs to be replaced on the board?

4

You will need to replace this USB - Hub chip (Component U25) , and/or the supporting components,

image
image834×451 67.1 KB

Please refer to the schematic for more info.

5

Thanks guys, I’ll fix it. Let you know about the results. :wink: