Re: missing USB gadget support on beagleboard?

[Hollis Blanchard <hollis_blanchard@mentor.com>]

On 02/14/2012 10:24 PM, McClintock Matthew-B29882 wrote:
> On Tue, Feb 14, 2012 at 4:12 PM, Hollis Blanchard
> <hollis_blanchard@mentor.com>  wrote:
>> Hi, I'm sure I'm missing something simple, but I just built Poky from git
>> for beagleboard, and can't figure out USB networking. I expected to find
>> g_cdc and g_ether modules in
>> /lib/modules/3.0.18-yocto-standard+/kernel/drivers/usb, but that directory
>> doesn't actually exist (I guess the drivers are built-in to this kernel).
>>
>> I have MACHINE ??= beagleboard in local.conf, and "bitbake
>> core-image-minimal" did produce a working kernel, uboot, etc. I see some USB
>> messages at boot (see below), but although cdc_ether is mentioned, ifconfig
>> -a lists only loopback.
>>
>> Any suggestions? Thanks!
> You can look at the default defconfig to see which kernel modules are
> selected and also make sure the kernel modules are actually included
> on core-image-minimal.

Right, it looks like CONFIG_USB_ETH is disabled in 
linux-beagleboard-standard-build/.config , and I think that's the key 
missing option. I'm so lost in Yocto's kernel configuration 
"architecture" that I have no idea if that's being explicitly disabled, 
or just omitted from the base config, or what.

It seems to me that option should be enabled if DISTRO_FEATURES contains 
usbgadget. More simply, it seems like a good idea to enable 
CONFIG_USB_ETH in the beagleboard default configuration, since many 
beagleboards don't have any other network interface.

Is there an owner of Yocto's beagleboard BSP stuff?

Hollis Blanchard
Mentor Graphics, Embedded Systems Division