Other Parts Discussed in Thread: AM5718, TUSB8044A
Tool/software:
Hi,
On our board, TUSB8041 chip connects to AM5718 and is powered by on-board supply.
In a board stress test, USB3.0 flash drives were connected to downstream ports of TUSB8041, USB flash drive write/read test was performed, and then reboot the board for next round test.
Most of time during reboot, the 4-port USB3.0 hub feature of TUSB8041 could be recognized successfully, and flash drive was recognized as SuperSpeed device.
However, occasionally, 4-port USB 3.0 hub was not recognized, only USB 2.0 hub was recognized, and the USB3.0 flash drive was recognized as high-speed devices.
The log for one of such failure case is provided below.
Please propose what the possible cause of this issue is, as well as recommended solution. Thanks,
[ 1.564846] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 4.19
[ 1.573146] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.580405] usb usb1: Product: xHCI Host Controller
[ 1.585817] usb usb1: Manufacturer: Linux 4.19.315-g13ecea8fab xhci-hcd
[ 1.592456] usb usb1: SerialNumber: xhci-hcd.0.auto
[ 1.625472] usb usb2: We don't know the algorithms for LPM for this host, disabling LPM.
[ 1.633662] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 4.19
[ 1.642009] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.649269] usb usb2: Product: xHCI Host Controller
[ 1.654164] usb usb2: Manufacturer: Linux 4.19.315-g13ecea8fab xhci-hcd
[ 1.660810] usb usb2: SerialNumber: xhci-hcd.0.auto
[ 1.703272] usb usb3: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 4.19
[ 1.711580] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.718838] usb usb3: Product: xHCI Host Controller
[ 1.723734] usb usb3: Manufacturer: Linux 4.19.315-g13ecea8fab xhci-hcd
[ 1.730379] usb usb3: SerialNumber: xhci-hcd.1.auto
[ 1.763691] usb usb4: We don't know the algorithms for LPM for this host, disabling LPM.
[ 1.771954] usb usb4: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 4.19
[ 1.780300] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.787594] usb usb4: Product: xHCI Host Controller
[ 1.792489] usb usb4: Manufacturer: Linux 4.19.315-g13ecea8fab xhci-hcd
[ 1.799185] usb usb4: SerialNumber: xhci-hcd.1.auto
[ 1.812396] usbcore: registered new interface driver usb-storage
[ 1.906282] usb 1-1: new high-speed USB device number 2 using xhci-hcd
[ 2.095566] usb 1-1: New USB device found, idVendor=0451, idProduct=8142, bcdDevice= 1.00
[ 2.103777] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=1
[ 2.143622] usb 1-1: SerialNumber: 090000899906
[139291.004649] usb 1-1.1: new low-speed USB device number 3 using xhci-hcd
[139291.140194] usb 1-1.1: New USB device found, idVendor=03f0, idProduct=0d4a, bcdDevice= 2.07
[139291.148684] usb 1-1.1: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[139291.157117] usb 1-1.1: Product: HP USB Keyboard
[139291.278482] input: HP USB Keyboard as /devices/platform/44000000.ocp/48880000.omap_dwc3_1/48890000.usb/xhci-hcd.0.auto/usb1/1-1/1-1.1/1-1.1:1.0/0003:03F0:0D4A.0001/input/input2
[139291.366018] hid-generic 0003:03F0:0D4A.0001: input,hidraw0: USB HID v1.10 Keyboard [HP USB Keyboard] on usb-xhci-hcd.0.auto-1.1/input0
[139291.385959] input: HP USB Keyboard System Control as /devices/platform/44000000.ocp/48880000.omap_dwc3_1/48890000.usb/xhci-hcd.0.auto/usb1/1-1/1-1.1/1-1.1:1.1/0003:03F0:0D4A.0002/input/input3
[139291.465526] input: HP USB Keyboard Consumer Control as /devices/platform/44000000.ocp/48880000.omap_dwc3_1/48890000.usb/xhci-hcd.0.auto/usb1/1-1/1-1.1/1-1.1:1.1/0003:03F0:0D4A.0002/input/input4
[139291.484300] hid-generic 0003:03F0:0D4A.0002: input,hidraw1: USB HID v1.10 Device [HP USB Keyboard] on usb-xhci-hcd.0.auto-1.1/input1
[139291.498937] usbcore: registered new interface driver usbhid
[139291.509001] usbhid: USB HID core driver
[139364.697086] usb 1-1.1: USB disconnect, device number 3
[139367.554638] usb 1-1.1: new high-speed USB device number 4 using xhci-hcd
[139367.694165] usb 1-1.1: New USB device found, idVendor=ffff, idProduct=5678, bcdDevice= 2.00
[139367.702688] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[139367.711191] usb 1-1.1: Product: Disk 2.0
[139367.715718] usb 1-1.1: Manufacturer: USB
[139367.719744] usb 1-1.1: SerialNumber: 9207034574976631292
[139367.731535] usb-storage 1-1.1:1.0: USB Mass Storage device detected
[139367.742491] scsi host1: usb-storage 1-1.1:1.0
[139384.153008] usb 1-1.1: USB disconnect, device number 4
[139409.024636] usb 1-1.1: new high-speed USB device number 5 using xhci-hcd
[139409.395180] usb 1-1.1: Device not responding to setup address.
[139409.614681] usb 1-1.1: Device not responding to setup address.
[139409.834660] usb 1-1.1: device not accepting address 5, error -71
[139410.154647] usb 1-1.1: new high-speed USB device number 6 using xhci-hcd
[139410.289165] usb 1-1.1: New USB device found, idVendor=0951, idProduct=1666, bcdDevice= 1.10
[139410.297654] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[139410.306093] usb 1-1.1: Product: DataTraveler 3.0
[139410.310818] usb 1-1.1: Manufacturer: Kingston
[139410.316104] usb 1-1.1: SerialNumber: 408D5CBF949DE731991900BC
[139410.326027] usb-storage 1-1.1:1.0: USB Mass Storage device detected
[139410.334450] scsi host1: usb-storage 1-1.1:1.0
[139418.201004] usb 1-1.1: USB disconnect, device number 6
device list when this happened
root:~# lsusb
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 0451:8142 Texas Instruments, Inc. TUSB8041 4-Port Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
device list for normal recognition
root:~# lsusb
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 002: ID 0451:8140 Texas Instruments, Inc. TUSB8041 4-Port Hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 0451:8142 Texas Instruments, Inc. TUSB8041 4-Port Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Peng
