usb-to-eth dongle on usb ehci host port

[twebb]

I'm trying to get network connectivity via a usb-to-eth dongle on
HSUSB2/EHCI port of an OMAP35xx.  The dongle is recognized and
enumerated by the ehci controller, but no eth0 net device is
dynamically created.  I'm passing the basic IP parameters to the
kernel using u-boot kernel args.  Is a particular kernel config
parameter required?  Maybe CONFIG_USB_USBNET and/or
CONFIG_USB_NET_CDCETHER?  (I'm about to try these.)

The dongle is OK because I get network connectivity through it when I
plug the dongle into my linux laptop.  I know this is simple, but I'm
not sure what I'm missing.

Thanks,
twebb
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Re: usb-to-eth dongle on usb ehci host port

[twebb]

 Sounds like the usb device didn't get recognized as an ethernet adaptor.  I
 use netgear fa120 USB ethernet adaptor with my beagleboard and it works
 great.

 Next time include some boot output and we can likely provide more specific
 suggestions.

 Todd


Here are portions of output from kernel startup.  It does look like it
recognizes it (REALTEK USB 10/100 LAN), but how to tell if it
recognizes it specifically as a eth adaptor?

twebb

...
usbcore: registered new interface driver asix
usbcore: registered new interface driver cdc_ether
usbcore: registered new interface driver net1080
usbcore: registered new interface driver cdc_subset
usbcore: registered new interface driver zaurus
i2c /dev entries driver
Driver 'sd' needs updating - please use bus_type methods
usbmon: debugfs is not available
drivers/usb/host/ehci-omap.c:omap_start_ehc, TLL is Active, val = 0x9, count = 5
000
ehci-omap ehci-omap.0: OMAP-EHCI Host Controller
ehci-omap ehci-omap.0: new USB bus registered, assigned bus number 1
ehci-omap ehci-omap.0: irq 77, io mem 0x48064800
ehci-omap ehci-omap.0: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 3 ports detected
usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb1: Product: OMAP-EHCI Host Controller
usb usb1: Manufacturer: Linux 2.6.27-omap1-svn168-dirty1 ehci_hcd
usb usb1: SerialNumber: ehci-omap.0
Initializing USB Mass Storage driver...
usb 1-2: new high speed USB device using ehci-omap and address 2
usb 1-2: configuration #1 chosen from 1 choice
hub 1-2:1.0: USB hub found
hub 1-2:1.0: 3 ports detected
usb 1-2: New USB device found, idVendor=0424, idProduct=2513
usb 1-2: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 1-2.2: new full speed USB device using ehci-omap and address 3
usb 1-2.2: configuration #1 chosen from 1 choice
usb 1-2.2: New USB device found, idVendor=0bda, idProduct=8150
usb 1-2.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-2.2: Product: USB 10/100 LAN
usb 1-2.2: Manufacturer: REALTEK
usb 1-2.2: SerialNumber: 8918
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
usbcore: registered new interface driver usbtest
zero gadget: Gadget Zero, version: Cinco de Mayo 2008
zero gadget: zero ready
musb_hdrc musb_hdrc: MUSB HDRC host driver
musb_hdrc musb_hdrc: new USB bus registered, assigned bus number 2
usb usb2: configuration #1 chosen from 1 choice
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 1 port detected
usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb2: Product: MUSB HDRC host driver
usb usb2: Manufacturer: Linux 2.6.27-omap1-svn168-dirty1 musb-hcd
usb usb2: SerialNumber: musb_hdrc
...
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Re: usb-to-eth dongle on usb ehci host port

[David Brownell]

On Thursday 23 April 2009, twebb wrote:
  It does look like it
 recognizes it (REALTEK USB 10/100 LAN), but how to tell if it
 recognizes it specifically as a eth adaptor?

drivers/net/usb/Kconfig has a USB_RTL8150 entry you might try.

 usb 1-2.2: New USB device found, idVendor=0bda, idProduct=8150
 usb 1-2.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
 usb 1-2.2: Product: USB 10/100 LAN
 usb 1-2.2: Manufacturer: REALTEK
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