CP2102 UART adapter not attaching

[Hans Petter Selasky]

On 01/13/16 17:30, Mark Johnston wrote:
> On Wed, Jan 13, 2016 at 08:55:29AM +0100, Hans Petter Selasky wrote:
>> On 01/13/16 07:17, Mark Johnston wrote:
>>> On Wed, Jan 13, 2016 at 07:17:04AM +0100, Hans Petter Selasky wrote:
>>>> On 01/13/16 07:04, Mark Johnston wrote:
>>>>> On Mon, Jan 11, 2016 at 09:41:01AM +0100, Hans Petter Selasky wrote:
>>>>>> On 01/10/16 05:07, Mark Johnston wrote:
>>>>>>> Hi,
>>>>>>>
>>>>>>> I have the module listed here:
>>>>>>> http://www.amazon.com/KEDSUM%C2%AE-CP2102-Module-Download-Converter/dp/B009T2ZR6W
>>>>>>>
>>>>>>> Under Windows 8 it works perfectly, but on FreeBSD-CURRENT I get:
>>>>>>>
>>>>>>> usb_alloc_device: set address 3 failed (USB_ERR_STALLED, ignored)
>>>>>>> usbd_setup_device_desc: getting device descriptor at addr 3 failed, USB_ERR_STALLED
>>>>>>> usbd_req_re_enumerate: addr=3, set address failed! (USB_ERR_STALLED, ignored)
>>>>>>> usbd_setup_device_desc: getting device descriptor at addr 3 failed, USB_ERR_STALLED
>>>>>>> usbd_req_re_enumerate: addr=3, set address failed! (USB_ERR_STALLED, ignored)
>>>>>>> usbd_setup_device_desc: getting device descriptor at addr 3 failed, USB_ERR_STALLED
>>>>>>> usbd_req_re_enumerate: addr=3, set address failed! (USB_ERR_STALLED, ignored)
>>>>>>> usbd_setup_device_desc: getting device descriptor at addr 3 failed, USB_ERR_STALLED
>>>>>>> usbd_req_re_enumerate: addr=3, set address failed! (USB_ERR_STALLED, ignored)
>>>>>>> usbd_setup_device_desc: getting device descriptor at addr 3 failed, USB_ERR_STALLED
>>>>>>> ugen1.3: <Unknown> at usbus1 (disconnected)
>>>>>>> uhub_reattach_port: could not allocate new device
>>>>>>>
>>>>>>> It looks like this device should be handled by uslcom(4), but it looks
>>>>>>> like we can't even get the device descriptor. How can I go about
>>>>>>> debugging this?
>>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> What does "usbconfig" say about your USB controllers?
>>>>>>
>>>>>> Did you try to connect through an external USB HUB?
>>>>>
>>>>> No, I don't have one handy. usbconfig shows:
>>>>>
>>>>> ugen0.1: <XHCI root HUB 0x8086> at usbus0, cfg=0 md=HOST spd=SUPER (5.0Gbps) pwr=SAVE (0mA)
>>>>> ugen1.1: <EHCI root HUB Intel> at usbus1, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=SAVE (0mA)
>>>>> ugen2.1: <EHCI root HUB Intel> at usbus2, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=SAVE (0mA)
>>>>>
>>>>
>>>> Could you show what "pciconf -lv" says about xhci0. Sometimes you need
>>>> to set a special routing register before some XHCI controllers work!
>>>
>>> xhci0 at pci0:0:20:0:      class=0x0c0330 card=0x84ca1043 chip=0x1e318086 rev=0x04 hdr=0x00
>>>       vendor     = 'Intel Corporation'
>>>       device     = '7 Series/C210 Series Chipset Family USB xHCI Host Controller'
>>>       class      = serial bus
>>>       subclass   = USB
>>>
>>> I'm plugging the module into the first EHCI controller though - it's a
>>> USB 2.0 device.
>>>
>>
>> In src/sys/dev/usb/controller/xhci_pci.c you can try adding the PCI chip
>> ID to the following list:
>
> It looks like 0x1e318086 is already in the list?
>
>>
>>           case 0x0f358086:        /* BayTrail */
>>           case 0x9c318086:        /* Panther Point */
>>           case 0x1e318086:        /* Panther Point */
>>           case 0x8c318086:        /* Lynx Point */
>>           case 0x8cb18086:        /* Wildcat Point */
>>           case 0x9cb18086:        /* Broadwell Mobile Integrated */
>>                   /*
>>                    * On Intel chipsets, reroute ports from EHCI to XHCI
>>                    * controller and use a different IMOD value.
>>                    */
>>
>>
>> --HPS
>

Try to set:

hw.usb.xhci.xhci_port_route=0

or

hw.usb.xhci.xhci_port_route=0xffffffff

In /boot/loader.conf

Any difference?

--HPS