Hi,

I am still stuck with this problem. I found out, that the hardware is 
definitely working - even with a Raspberry Pi running a 3.6.11 kernel the 
USB hub is recogniced, so I am sure it is a software issue.

I updated to the latest kernel version in rcn-ee.net jessie repository 
("3.18.0-rc6-bone1"). With this kernel, I don't receive those "unable to 
enumerate USB device" errors anymore, but while booting up I get the 
following timeout:
udevadm settle - timeout of 120 seconds reached, the event queue contains:
  /sys/devices/ocp/47400000.usb/47401c00.usb/musb-hdrc.1.auto/usb1 (1431)
  /sys/devices/ocp/47400000.usb/47401c00.usb/musb-hdrc.1.auto/usb1/1-0:1.0 (
1432)

I see, that there is a USB-Hub cape available (
http://elinux.org/USB_HUB_Cape). Does anybody know what chip they are using 
- or does anybody have experiences with a USB hub chip that is working with 
the BeagleBone Black? I found an I/O cape from Titan 
(http://www.titan.tw/product/USB_2COM_BB.html) which is built on a chip 
from Genesys Logic. The powered usb hub I have here and that is working 
well, is built on a chip from Cypress (CY7C65640-LFC). So I could just have 
a new pcb board designed which is built on one of those chips and forget 
about the SMSC chip, but I cannot believe, that one of the most popular usb 
hub chips of all is just not working with the BeagleBone Black.

I don't know anymore what else to try. I'd be glad for any advice...

Best regards,
Stefan


Am Mittwoch, 12. November 2014 23:25:28 UTC+2 schrieb Stefan Feilmeier:
>
> Hello,
>
> Please help me with the following problem. I am not much of a 
> hardware-expert, but till now I was able to resolve quite all of my 
> BeagleBone Black related problems with the extensive information available 
> online. Only with this problem I am now stuck for days...
>
> I got a custom (not by me) made board providing a USB-Hub (from SMSC) and 
> a USB-to-RS485 (FTDI) converter. When I connect it to the the Beaglebone 
> Black on its USB-Host interface I constantly get messages like the 
> following, with the device number counting up forever:
>
>> [   17.600794] usb 1-1: new high-speed USB device number 25 using 
>> musb-hdrc
>> [   17.673073] hub 1-0:1.0: unable to enumerate USB device on port 1
>>
>
> Also no leds are turning on on the custom board. The Beaglebone is running 
> on Debian with the following kernel - but I also tried without success 
> another Beaglebone Black with a more recent kernel.
> root@debian:~# uname -a
> Linux debian 3.8.13-bone67 #1 SMP Wed Sep 24 18:32:44 UTC 2014 armv7l 
> GNU/Linux
>
> When I connect the same board via USB to a Linux laptop, it works 
> perfectly fine with the following messages, including the custom boards' 
> leds turning on:
>
>> usb 1-3: new high-speed USB device number 3 using ehci-pci 
>>
> usb 1-3: New USB device found, idVendor=0424, idProduct=2514
>>
> usb 1-3: New USB device strings: Mfr=0, Product=0, SerialNumber=0
>>
> hub 1-3:1.0: USB hub found
>> hub 1-3:1.0: 4 ports detected
>> usb 1-3.4: new full-speed USB device number 4 using ehci-pci
>> usb 1-3.4: New USB device found, idVendor=0403, idProduct=6015
>> usb 1-3.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
>> usb 1-3.4: Product: FT230X Basic UART
>> usb 1-3.4: Manufacturer: FTDI
>> ...
>>
>
>  Also on a Windows Machine the board works fine. Results of usbview.exe:
>
>> [Port2]  :  Generic USB Hub
>>
> External Hub: 
>> USB#VID_0424&PID_2514#6&109c578c&0&2#{f18a0e88-c30c-11d0-8815-00a0c906bed8}
>>
> Is Port User Connectable:         yes
>> Is Port Debug Capable:            no
>> Companion Port Number:            0
>> Companion Hub Symbolic Link Name: 
>> Protocols Supported:
>>  USB 1.1:                         yes
>>  USB 2.0:                         yes
>>  USB 3.0:                         no
>>
> Hub Power:                    Self Power
>> Hub type:                     USB 2.0 Hub
>> Number of Ports:              4
>> Power switching:              Individual
>> Compound device:              Yes
>> Over-current Protection:      Individual
>>
> High speed capable:           Yes
>> High speed:                   Yes
>> Multiple transaction translations capable:                 Yes
>> Performs multiple transaction translations simultaneously: Yes
>> Hub wakes when device is connected:                        No
>> Hub is bus powered:           No
>> Hub is root:                  No
>>
>        ---===>Device Information<===---
>> ConnectionStatus:                  
>> Current Config Value:              0x01  -> Device Bus Speed: High (is 
>> not SuperSpeed or higher capable)
>> Device Address:                    0x02
>> Open Pipes:                           1
>>
>           ===>Device Descriptor<===
>> bLength:                           0x12
>> bDescriptorType:                   0x01
>> bcdUSB:                          0x0200
>> bDeviceClass:                      0x09  -> This is a HUB Device
>>
> bDeviceSubClass:                   0x00
>> bDeviceProtocol:                   0x02
>> bMaxPacketSize0:                   0x40 = (64) Bytes
>> idVendor:                        0x0424 = SMSC
>> idProduct:                       0x2514
>> bcdDevice:                       0x0BB3
>> iManufacturer:                     0x00
>> iProduct:                          0x00
>>
> iSerialNumber:                     0x00
>> bNumConfigurations:                0x01
>>           ---===>Open Pipes<===---
>>           ===>Endpoint Descriptor<===
>> bLength:                           0x07
>> bDescriptorType:                   0x05
>> bEndpointAddress:                  0x81  -> Direction: IN - EndpointID: 1
>> bmAttributes:                      0x03  -> Interrupt Transfer Type
>>
> wMaxPacketSize:                  0x0001 = 1 transactions per microframe, 
>> 0x01 max bytes
>> bInterval:                         0x0C
>>        ---===>Full Configuration Descriptor<===---
>>           ===>Configuration Descriptor<===
>> bLength:                           0x09
>> bDescriptorType:                   0x02
>> wTotalLength:                    0x0029  -> Validated
>> bNumInterfaces:                    0x01
>> bConfigurationValue:               0x01
>>
> iConfiguration:                    0x00
>> bmAttributes:                      0xE0  -> Self Powered
>>   -> Remote Wakeup
>> MaxPower:                          0x01 =   2 mA
>>           ===>Interface Descriptor<===
>> bLength:                           0x09
>> bDescriptorType:                   0x04
>> bInterfaceNumber:                  0x00
>> bAlternateSetting:                 0x00
>> bNumEndpoints:                     0x01
>> bInterfaceClass:                   0x09  -> HUB Interface Class
>>
> bInterfaceSubClass:                0x00
>> bInterfaceProtocol:                0x01
>> iInterface:                        0x00
>>           ===>Endpoint Descriptor<===
>> bLength:                           0x07
>> bDescriptorType:                   0x05
>> bEndpointAddress:                  0x81  -> Direction: IN - EndpointID: 1
>> bmAttributes:                      0x03  -> Interrupt Transfer Type
>>
> wMaxPacketSize:                  0x0001 = 1 transactions per microframe, 
>> 0x01 max bytes
>>
> bInterval:                         0x0C
>>           ===>Interface Descriptor<===
>> bLength:                           0x09
>> bDescriptorType:                   0x04
>> bInterfaceNumber:                  0x00
>> bAlternateSetting:                 0x01
>> bNumEndpoints:                     0x01
>> bInterfaceClass:                   0x09  -> HUB Interface Class
>> bInterfaceSubClass:                0x00
>>
> bInterfaceProtocol:                0x02
>> iInterface:                        0x00
>>           ===>Endpoint Descriptor<===
>> bLength:                           0x07
>> bDescriptorType:                   0x05
>> bEndpointAddress:                  0x81  -> Direction: IN - EndpointID: 1
>> bmAttributes:                      0x03  -> Interrupt Transfer Type
>> wMaxPacketSize:                  0x0001 = 1 transactions per microframe, 
>> 0x01 max bytes
>> bInterval:                         0x0C
>>
>
> If I plug in a ready-made powered USB-Hub into my Beaglebone, it's also 
> working without problems:
>
>> [ 1011.864369] usb 1-1: new high-speed USB device number 79 using 
>> musb-hdrc
>> [ 1011.993478] usb 1-1: New USB device found, idVendor=04b4, 
>> idProduct=6560
>> [ 1012.003654] usb 1-1: New USB device strings: Mfr=0, Product=0, 
>> SerialNumber=0
>> [ 1012.024643] hub 1-1:1.0: USB hub found
>> [ 1012.043653] hub 1-1:1.0: 4 ports detected
>>
>
> Only my custom board doesn't seem to work. Trying to compare the outputs 
> of "usbview.exe" I found the following differences between the 
> "ready-madepowered USB-Hub" and the "custom board": (ignoring the obviously 
> different idVendor, idProduct and bcdDevice values)
> Ready-madepowered USB-Hub:
>
>> Compound device:              No
>>
> MaxPower:                          0x32 = 100 mA
>>
> Custom board:
>
>> Compound device:              Yes
>> MaxPower:                          0x01 =   2 mA
>>
>
>
> Is it a power supply problem? How can I solve the problem? All your 
> feedback and hints are very much appreciated.
>
> Best regards,
> Stefan
>

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