USB-Ethernet Adapter Support

[Steven Moon]

I have a need for 2 Ethernet ports on the MTCDP running CoreCDP v2.1.0. I have a USB-Ethernet adapter based on the ASIX MCS7830 (http://ca.startech.com/Networking-IO/Adapter-Cards/Compact-USB-20-to-10-100-Mbps-Ethernet-Adapter~USB2106S#dnlds).

When I plug in the adapter I get this from dmesg:

usb 1-2: new full speed USB device using at91_ohci and address 3

usb 1-2: New USB device found, idVendor=9710, idProduct=7830

usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3

usb 1-2: Product: USB-MAC Controller

usb 1-2: Manufacturer: Moschip Semiconductor

usb 1-2: SerialNumber: 3b250656

I have used this adapter with other embedded linux systems without any issues but I am unable to get it to be recognized by the MTCDP as a networking adapter (i.e. not listed in ifconfig -a).

Here is my lsmod output:

# lsmod

Module                  Size  Used by

usbnet                 13385  0

g_serial               20426  2

mts_io                 17984  0

sierra                 10736  0

usbserial              26699  1 sierra

at91_mci                4985  0

lsusb:

# lsusb

Bus 001 Device 001: ID 1d6b:0001

Bus 001 Device 002: ID 1199:683c

Bus 001 Device 004: ID 9710:7830

I have tried modprobe usbnet with no success. The usbnet module does support some ASIX devices but I can’t seem to get it to work. Any ideas?

Thanks,

Steven

[Bryan Tran]

Hi Steven,

Can you try to do: modprobe asix[Enter]

See if it helps.

Regards,

BT

[Steven Moon]

I had tried that this morning and I tried again… Nothing

[Jesse Gilles]

The MCS7830 driver isn’t built by default, but it is available.

To get it, you’ll need to edit the kernel config and enable the driver, then re-build and flash your unit.

Edit multitech/recipes/linux/linux-2.6.35/mtcdp/defconfig and change

# CONFIG_USB_NET_MCS7830 is not set

to

# CONFIG_USB_NET_MCS7830=m

Then to rebuild the kernel and build a new image:

bitbake linux -c clean

bitbake corecdp-full-image

OR

bitbake corecdp-base-image

[Jesse Gilles]

I also just pushed a change to the git repository that includes this driver (and some others).

[Steven Moon]

Okay, sounds good. Thanks!

[Steven Moon]

Building now. I’ll update this post after I’m able to test it.

[Steven Moon]

I was able to complete the build from git and the Ethernet adapter works great.

Thanks,

Steven

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