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Forum Post: RE: USB OTG does not work in SDK 7.0

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Harsha,

Please use omap2plus_defconfig on the SDK7.0 kernel and post the dmesg kernel boot log, and /proc/config.gz file.

I am kinda confused about your problem: is it the host mode or the device mode which has issues?

The beginning of your first post mentioned:

[quote user="Harsha Kiran"]when we upgraded to the kernel from TI(Linux version 3.12.10-ti2013.12.01) in sdk7 the host mode does not seem to work. [/quote]

But later you said

[quote user="Harsha Kiran"]I have verified that when i connect any usb gadgets to the board they all get recognized.[/quote]

which seems telling host mode has no issue.

But

[quote user="Harsha Kiran"]but when i connect my board to the PC, i dont see any activity on the Windows PC (no COMM port is created)[/quote]

which seems telling the device mode has issues.

Please confirm which mode has issues.

[quote user="Harsha Kiran"]we figured out that the it refreshes the RAM based on ddr3 or 2. Ours is a low power ddr RAM. How should I calculate those values?[/quote]

I think this problem is irrelevant to the USB issue, please post it into a new thread.


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