On 05/03/2017 03:19 AM, Bin Liu wrote:
On Tue, May 02, 2017 at 08:14:10PM -0500, Bin Liu wrote:
On Tue, May 02, 2017 at 05:05:32PM -0400, Ed Lizard wrote:
I'm having trouble seeing the udc driver for dwc3 in /sys/class/udc.
We are moving platforms from musb on 2.6.37 to dwc3 on 4.6. Whew, a
lot has changed since we were stuck on the old kernel.
It looks like libusbgx and udc is the current method for a complex
video/web gadget ( uvc and a couple of uac gadgets).
Is UDC missing from 4.6? If so then what kernel should support it?
Yup, dwc3 udc was added since v3.1, I believe.
I meant nope :)
Regards,
-Bin.
I'm going to the latest on linux-next to see if it was not in 4.6 or
it's something I'm doing.
dwc3 udc should present in v4.6. I guess either your kernel wasn't
configured correctly, or your platform (dwc3 glue) wasn't supported in
kernel.
Maybe it's just a naming problem? you are not going to see "dwc3" folder
in /sys/class/udc like but only device-tree generated name for dwc3
example for my dwc2 I have 12480000.hsotg.
Best regards,
--
Krzysztof Opasiak
Samsung R&D Institute Poland
Samsung Electronics
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