I tried all 4 ports had the same errors. When switched to device, the messages are different but that’s not what I need:
[ 191.787672] usb usb7: USB disconnect, device number 1
[ 191.789424] xhci-hcd xhci-hcd.8.auto: USB bus 7 deregistered
[ 191.790605] rockchip-dwc3 usb0: USB unconnected
[ 193.430525] phy phy-ff770000.syscon:[email protected]: charger = USB_FLOATING_CHARGER
Switching back to host position, USB connected but HNP didn’t happen so the connection is useless:
[ 386.098336] usb usb8: New USB device found, idVendor=1d6b, idProduct=0003
[ 386.098354] usb usb8: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 386.098369] usb usb8: Product: xHCI Host Controller
[ 386.098383] usb usb8: Manufacturer: Linux 4.4.154-78-rockchip-00017-g625c2b2 xhci-hcd
[ 386.098397] usb usb8: SerialNumber: xhci-hcd.8.auto
[ 386.100177] hub 8-0:1.0: USB hub found
[ 386.100247] hub 8-0:1.0: 1 port detected
[ 386.100985] rockchip-dwc3 usb0: USB HOST connected