Dear Sir,
My board has two usb 3.0 port, when I plug in U disk(USB3.0) to both ports ,one can be work on super speed,but another couldn’t ,Please see following log.
Would you please help me to fix this issue? Thanks!
nvidia@tegra-ubuntu:~$ lsusb -t
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci-tegra/3p, 5000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci-tegra/4p, 480M
|__ Port 3: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
|__ Port 1: Dev 4, If 0, Class=Mass Storage, Driver=usb-storage, 480M
nvidia@tegra-ubuntu:~$ [ 38.226256] usb 1-3.1: USB disconnect, device number 4
[ 38.266648] xhci-tegra 3530000.xhci: tegra_xhci_mbox_work mailbox command 6
[ 38.432268] xhci-tegra 3530000.xhci: entering ELPG
[ 38.439900] xhci-tegra 3530000.xhci: entering ELPG done
[ 40.748795] xhci-tegra 3530000.xhci: exiting ELPG
[ 40.776508] xhci-tegra 3530000.xhci: Firmware timestamp: 2017-12-07 10:50:08 UTC, Version: 55.09 release
[ 40.789422] xhci-tegra 3530000.xhci: exiting ELPG done
[ 40.789441] xhci-tegra 3530000.xhci: tegra_xhci_mbox_work mailbox command 6
[ 41.017207] usb 2-1: new SuperSpeed USB device number 2 using xhci-tegra
[ 41.048293] usb 2-1: feature bit otg_vbus_off set
[ 41.053110] usb 2-1: New USB device found, idVendor=0951, idProduct=1666
[ 41.059956] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 41.067322] usb 2-1: Product: DataTraveler 3.0
[ 41.071914] usb 2-1: Manufacturer: Kingston
[ 41.076271] usb 2-1: SerialNumber: 08606E6B64C4F181E722FBC5
[ 41.083533] xhci-tegra 3530000.xhci: tegra_xhci_mbox_work mailbox command 6
[ 41.093742] usb-storage 2-1:1.0: USB Mass Storage device detected
[ 41.100542] scsi host4: usb-storage 2-1:1.0
[ 42.106023] scsi 4:0:0:0: Direct-Access Kingston DataTraveler 3.0 PQ: 0 ANSI: 6
[ 42.116713] sd 4:0:0:0: [sda] 60437492 512-byte logical blocks: (30.9 GB/28.8 GiB)
[ 42.125167] sd 4:0:0:0: [sda] Write Protect is off
[ 42.129999] sd 4:0:0:0: [sda] Mode Sense: 4f 00 00 00
[ 42.135817] sd 4:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn’t support DPO or FUA
[ 42.149928] sda: sda1
[ 42.153823] sd 4:0:0:0: [sda] Attached SCSI removable disk
[ 42.326687] FAT-fs (sda1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
nvidia@tegra-ubuntu:~$ lsusb -t
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci-tegra/3p, 5000M
|__ Port 1: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci-tegra/4p, 480M
|__ Port 3: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M