USB Hub Not working

Hello,
Which kernel version are you using? Have you tried with the latest kernel?
Regards

We have used Linux Kernel 3.14.38 and we tried 4.1.15

we have these running on a SOM Variscite DART-i.Mx6 Board based on a Freescale arm chip.

root@var-som-mx6:~# uname -a
Linux var-som-mx6 3.14.38-6QP+g5b28091 #1 SMP PREEMPT Wed Mar 16 12:35:15 EDT 2016 armv7l GNU/Linux

- So here I can see the hub from TI:
root@var-som-mx6:~# lspci
00:00.0 PCI bridge: Synopsys, Inc. Device abcd (rev 01)
01:00.0 USB controller: Texas Instruments TUSB73x0 SuperSpeed USB 3.0 xHCI Host Controller (rev 02)

- I just connected a USB 2 stick and this is what happened:

root@var-som-mx6:~# usb 2-3: new high-speed USB device number 6 using xhci_hcd
usb-storage 2-3:1.0: USB Mass Storage device detected
scsi0 : usb-storage 2-3:1.0
usb 2-4: new high-speed USB device number 7 using xhci_hcd
hub 2-4:1.0: USB hub found
hub 2-4:1.0: 7 ports detected
hub 2-4:1.0: config failed, can't get hub status (err -71)
scsi 0:0:0:0: Direct-Access Generic Flash Disk 8.07 PQ: 0 ANSI: 4
sd 0:0:0:0: [sda] 15663104 512-byte logical blocks: (8.01 GB/7.46 GiB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
sda: sda1
sd 0:0:0:0: [sda] Attached SCSI removable disk

root@var-som-mx6:~# lsusb
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 007: ID 0424:2137 Standard Microsystems Corp.
Bus 002 Device 006: ID 058f:6387 Alcor Micro Corp. Flash Drive
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub


- Here is what happened when I connect an usb stick 3:

var-som-mx6 login: root
root@var-som-mx6:~# lsusb
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 002: ID 0424:2137 Standard Microsystems Corp.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
root@var-som-mx6:~# usb 3-3: new SuperSpeed USB device number 2 using xhci_hcd
usb 3-3: Parent hub missing LPM exit latency info. Power management will be impacted.
usb-storage 3-3:1.0: USB Mass Storage device detected
scsi0 : usb-storage 3-3:1.0
scsi 0:0:0:0: Direct-Access Kingston DT microDuo 3.0 PMAP PQ: 0 ANSI: 6
sd 0:0:0:0: [sda] 61457664 512-byte logical blocks: (31.4 GB/29.3 GiB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] No Caching mode page found
sd 0:0:0:0: [sda] Assuming drive cache: write through
sd 0:0:0:0: [sda] No Caching mode page found
sd 0:0:0:0: [sda] Assuming drive cache: write through
sda: sda1
sd 0:0:0:0: [sda] No Caching mode page found
sd 0:0:0:0: [sda] Assuming drive cache: write through
sd 0:0:0:0: [sda] Attached SCSI removable disk
usb 3-3: reset SuperSpeed USB device number 2 using xhci_hcd
usb 3-3: Parent hub missing LPM exit latency info. Power management will be impacted.
xhci_hcd 0000:01:00.0: xHCI xhci_drop_endpoint called with disabled ep a8782f00
xhci_hcd 0000:01:00.0: xHCI xhci_drop_endpoint called with disabled ep a8782f2c
usb 3-3: reset SuperSpeed USB device number 2 using xhci_hcd
usb 3-3: Parent hub missing LPM exit latency info. Power management will be impacted.
xhci_hcd 0000:01:00.0: xHCI xhci_drop_endpoint called with disabled ep a8782f00
xhci_hcd 0000:01:00.0: xHCI xhci_drop_endpoint called with disabled ep a8782f2c
usb 3-3: reset SuperSpeed USB device number 2 using xhci_hcd
usb 3-3: Parent hub missing LPM exit latency info. Power management will be impacted.
xhci_hcd 0000:01:00.0: xHCI xhci_drop_endpoint called with disabled ep a8782f00
xhci_hcd 0000:01:00.0: xHCI xhci_drop_endpoint called with disabled ep a8782f2c
usb 3-3: reset SuperSpeed USB device number 2 using xhci_hcd
usb 3-3: Parent hub missing LPM exit latency info. Power management will be impacted.
xhci_hcd 0000:01:00.0: xHCI xhci_drop_endpoint called with disabled ep a8782f00
xhci_hcd 0000:01:00.0: xHCI xhci_drop_endpoint called with disabled ep a8782f2c
usb 3-3: reset SuperSpeed USB device number 2 using xhci_hcd
usb 3-3: Parent hub missing LPM exit latency info. Power management will be impacted.
xhci_hcd 0000:01:00.0: xHCI xhci_drop_endpoint called with disabled ep a8782f00
xhci_hcd 0000:01:00.0: xHCI xhci_drop_endpoint called with disabled ep a8782f2c
usb 3-3: reset SuperSpeed USB device number 2 using xhci_hcd
usb 3-3: Parent hub missing LPM exit latency info. Power management will be impacted.
xhci_hcd 0000:01:00.0: xHCI xhci_drop_endpoint called with disabled ep a8782f00
xhci_hcd 0000:01:00.0: xHCI xhci_drop_endpoint called with disabled ep a8782f2c
sd 0:0:0:0: [sda] Unhandled error code
sd 0:0:0:0: [sda]
Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
sd 0:0:0:0: [sda] CDB:
Read(10): 28 00 03 a9 c4 80 00 00 08 00
end_request: I/O error, dev sda, sector 61457536
Buffer I/O error on device sda, logical block 7682192

Notice it reset the superspeed USB device trying to mount it? well it keeps resetting over and over again for like a minute then it will show something like this:
Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
sd 0:0:0:0: [sda] CDB:
Read(10): 28 00 00 00 04 2f 00 00 08 00
end_request: I/O error, dev sda, sector 1071
Buffer I/O error on device sda1, logical block 504
Buffer I/O error on device sda1, logical block 505

- Now when it stop resetting if I do LSUSB this is what I see: (Keep in mind that the USB stick that I put was from Kingston...)

root@var-som-mx6:~# lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 0951:16a3 Kingston Technology
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 002: ID 0424:2137 Standard Microsystems Corp.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

If you compare that to the first time I've done LSUSB you will not see the Kingston Device...

So that tells me that It sees something it can read from it at low speed and retrieve the manufacturer information...But the super speed stuff get resets all the time while it's trying to mount it...until it aboard this process...

I get the same problem on your Evaluation board (See my initial message for more detail about the eval board...) And my circuit that I designed using your part...

Could you please provide any help about this issue? Could it be firmware related? I doubt that it is hardware since it's the same on your eval board. Which Kernel does TI recommend to use this part on?

Please respond ASAP as we are in need to solve this problem and start using TI parts on our product or we'll be force to redesign our board with an HUB from a different manufacturer...

Regards,

Hello,
Sorry for the delay.
We've been investigating this and we suspect that some of the USB thumb drives(recently) are not compliant with the USB spec, we need to perform more testing to be sure.
Have you tried with different thumb drives?
Is this detection issue random?
Can you send a picture of the top marking of the TUSB7340 you are having issues with?
Regards

On the black board it's the TUSB7340 that I am using on my design,

I've also took a picture of the Eval board that I got to test the TUSB7320 where we were able to replicate this issue while using the iMx6 Processor. 

Also to answer the question yes we have tried with different usb drives. same issue...

The detection issue happens every time we put a USB 3 stick...it reset and tries to mount until it give up trying...

Regards,

Hello,
Can you change the MRRS size? Try 256 bytes.
Look at the Table 4-55 in the datasheet.
Regards

Tried that already not working...As well as other sizes too nothing works...

How is the investigation going ?

Regards,

Hello,
We haven't been able to reproduce the issue.
The kernel you are using looks to have a stable xHCI driver, we have tested in x64 though, so I'm thinking it could be related to the embedded processor, I will forward this request to the software/driver people.
Regards