OMAP4460 usb OTG not detecting

Hi Raghu,

Did you verify if ID pin is pulled down so host mode is enabled? ( Also I didnt see which kernel version did you use?)

Regards,

Boyko

Dear Boyko,

Thanks for response.

we have not PU/PD ID pin. we are using linux 3.4.34 kernel version.

Regards,

Raghu

Hi Raghu,

So please check if your OTG cable is grounding the ID pin if not please do so and post if that was the case.

Regards,

Boyko

Dear Yanko,

Yes our OTG cable grounding the ID pin. but still not detecting.

Regards,

Raghu 

Hi Raghu,

What device are you  trying to connect to you module?

Is the device separately powered (is +5V coming from the board?) 

Regards,

Boyko

Dear Boyko,

we have connect our board to host machine (+5V supplied from host to board) tried lsusb and fdisk -ls in board terminal. as well as in host terminal. 

alternatively we tried connecting pendrive (with some extra cable)  to our board in this case +5V  supplied from board to device.(provision is there in our board).

regards,

Raghu 

Hi Raghu,

Without enabling OTG on  the target board(device) when you plug it to the host machine, what is the host response?

Is it recognized as usb device at all?

Regards,

Boyko

Dear Boyko,

we tried  without enabling OTG on target board. host is not recognizing usb device.

-Raghu

Perhaps you have to compile the usb gadget core driver and some additional gadget functionality as a module.

Regards,

Boyko