Re: usb resume errors

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Hi,
   Thank You, I went through the errata document.  Probably that
explains the usb suspend-resumes failures.
   Now that we use this part on your board. Cant we support
suspend-resume for other interfaces at all without getting "usb resume
failures"
   My understanding is - If suspend-resume has to work then we need to
put all the interfaces to suspend.
   Is there a workaround/hack?

  I guess evm uses SMSC3223. suspend-resume works on that part
according to the patch
  http://e2e.ti.com/support/arm174_microprocessors/omap_applications_processors/f/42/p/29363/102101.aspx#102101

Thank you,

Regards,
sriram





On Wed, Mar 24, 2010 at 10:56 PM, Gadiyar, Anand <gadiyar@xxxxxx> wrote:
> Sriram V wrote:
>
>> 1) I use 2.6.29 Kernel.
>> 2) I use a SMSC 3320 PHY to which a hub is connected. I have 2 devices
>> on the hub. My host is omap ehci.
>> 3) When i  suspend-resume the usb device i get the error "I get an
>> error "PM: Device 1-2.2 failed to resume: error -19"
>
> Hi,
>
> There's an interoperability issue between this PHY and the OMAP3.
> You won't be able to do USB suspend-resume with this PHY, if you're
> using the EHCI controller.
>
> (See the OMAP3 errata docs for details).
>
> This is what folks using the beagleboard have been facing for a
> while now. I'd recommend switching to another PHY.
>
> - Anand
>
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