On Wed, Mar 08, 2017 at 11:24:16PM +0530, Ganesh Biradar wrote: > Hi Bin, > > Just wanted to clarify, > > I have created already a thread(more then 2 weeks ago) which was > based on dual configuration support(mass storage and uvc > device(g_webcam)). in which i asked question based on 3.14 kernel > but confgifs support for uvc was added in 4.0 kernel. so i updated > to latest 4.4 kernel. regarding configfs support i have asked last > week, as today i got response from e2e expert that they have not Okay, I am not familiar with the SoC you use and don't know which TI business unit supports this device. > tested uvc for the sdk. It was TI e2e guys suggested to raise > question on configfs in linux community. The linux community can only support you if you can reproduce the issue with the latest mainline kernel. > > Regarding the post you mention that i have created is second thread > in TI e2e linux community dedicated to configfs. first thread is in > dedicated TI SOC forum. Okay I only noticed your e2e post on TI linux community which I subscribed, not the one on the SoC forum. > > Regarding TI E2E, they provided good help i never deny that. but i > was looking for some insightful from linux-usb community members > just to reason out what could be the issue. > > regarding uvc-gadget application, i have run that too but i have not > got anything at HOST side. If you proved other gadget works, likely you don't have any hardware problems, this could be software issue. But I cannot comment much since I am not familiar with this SoC and the SDK/kernel you use, here are some of my pointers. - Try with g_webcam.ko driver instead configfs to see it makes any difference, I personally haven't tried configfs for webcam gadget yet; - Use scope to probe the DP/DM for the pullup to ensure the device notifies for the attach; - Finally debug the dwc3 gadget driver to see where the enumeration failed. Good luck, -Bin. > > > On Wednesday 08 March 2017 07:33 PM, Bin Liu wrote: > >On Wed, Mar 08, 2017 at 01:59:50PM +0200, Felipe Balbi wrote: > >>Hi, > >> > >>(no top-posting, please) > >> > >>Ganesh Biradar <grbesd1@xxxxxxxxx> writes: > >>>Hi Felipe, > >>> > >>>I'm using TI latest vision sdk which has support for 4.4 kernel. i'm > >>>not getting much help from TI e2e that's why i am asking here. can't > >I don't think it is fair, you posted on TI e2e a few hours after started this > >thread, then complain not getting much help from TI e2e at here? > > > >But anyway, after all your configfs steps, have you run a userspace > >application, such as uvc-gadget [1], to feed the video stream? > > > >[1] git://git.ideasonboard.org/uvc-gadget.git > > > >Regards, > >-Bin. > > > >>>try v4.10 or any other kernel as it has dependencies with respect to > >>>SDK. > >>sorry, but you need to ask TI for help. > >> > >>-- > >>balbi > > > regards, > Ganesh -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
