USB kernel errors in warp_0x01 boards

[TitusRathinaraj Stalin]

Hi Experts,

I am getting the following USB errors from kernel.
Some times it works and some times getting the following errors.

Can you please tell me what could be the problem ?

Bus 001 Device 001: ID 1d6b:0002 
usb 1-1: new low-speed USB device number 6 using ci_hdrc

root@warp:~# usb 1-1: device no response, device descriptor read/64, error -110
usb 1-1: new low-speed USB device number 3 using ci_hdrc
usb 1-1: device no response, device descriptor read/64, error -110
usb 1-1: device no response, device descriptor read/64, error -110
usb 1-1: new low-speed USB device number 4 using ci_hdrc
usb 1-1: device not accepting address 4, error -110
usb 1-1: new low-speed USB device number 5 using ci_hdrc
usb 1-1: device not accepting address 5, error -110
usb usb1-port1: unable to enumerate USB device
usb 1-1: device no response, device descriptor read/64, error -110
usb 1-1: device no response, device descriptor read/64, error -110
usb 1-1: new low-speed USB device number 7 using ci_hdrc
usb 1-1: device no response, device descriptor read/64, error -110
usb 1-1: device no response, device descriptor read/64, error -110
usb 1-1: new low-speed USB device number 8 using ci_hdrc
usb 1-1: device not accepting address 8, error -110
usb 1-1: new low-speed USB device number 9 using ci_hdrc
usb 1-1: device not accepting address 9, error -110
usb usb1-port1: unable to enumerate USB device

Regards,
Titus S.

[TitusRathinaraj Stalin]

Getting this errors too.
Any patch for this ?

root@warp:/#
root@warp:/# dmesg|grep usb
[    0.205116] usbcore: registered new interface driver usbfs
[    0.205194] usbcore: registered new interface driver hub
[    0.205285] usbcore: registered new device driver usb
[    0.205518] 2000000.aips-bus:usbphy_nop1 supply vcc not found, using dummy regulator
[    1.052761] usbcore: registered new interface driver cdc_ether
[    1.057365] usbcore: registered new interface driver rndis_host
[    1.071538] usbcore: registered new interface driver usb-storage
[    1.076360] usbcore: registered new interface driver usb_ehset_test
[    1.088995] 2184200.usb supply vbus not found, using dummy regulator
[    1.373119] usbcore: registered new interface driver uvcvideo
[    1.451734] usb 1-1: new high-speed USB device number 2 using ci_hdrc
[    1.473010] usbcore: registered new interface driver bcm203x
[    1.477678] usbcore: registered new interface driver btusb
[    1.482244] usbcore: registered new interface driver ath3k
[    1.684851] usbcore: registered new interface driver usbhid
[    1.689139] usbhid: USB HID core driver
[    1.761704] usb 1-1: new high-speed USB device number 3 using ci_hdrc
[    2.021703] usb 1-1: new high-speed USB device number 4 using ci_hdrc
[    2.451772] usb 1-1: device not accepting address 4, error -71
[    2.571755] usb 1-1: new high-speed USB device number 5 using ci_hdrc
[    3.001760] usb 1-1: device not accepting address 5, error -71
[    3.021823] usb usb1-port1: unable to enumerate USB device
[    4.067043] usb0: HOST MAC b2:bd:52:ef:5b:57
[    4.070106] usb0: MAC 4e:b3:95:80:44:42
[    5.027733] IPv6: ADDRCONF(NETDEV_UP): usb0: link is not ready
root@warp:/#
root@warp:/#
root@warp:/#

[Aaron Moore]

Hi Titus,

Can you share a little bit more about your setup? Is it a bare board or hooked up via an interposer and how do have it powered? Also,  were any changes made to the device tree or USB gadget configuration?

We're not seeing this on our dev boards here so I'm trying to understand if the root cause is hardware or software so we can try to help track down the issue.

Let me know and we'll try to help get things figured out.

-Aaron