Re: USB ehci suspend/resume on beagleboard

[Roger Quadros <rogerq@ti.com>]

On 04/05/2013 02:11 PM, Grazvydas Ignotas wrote:
> On Thu, Apr 4, 2013 at 2:50 PM, Roger Quadros <rogerq@ti.com> wrote:
>> correcting misleading subject line.
>> was (Re: MUSB regression in linux next at least for pandboard)
>>
>> On 04/04/2013 02:36 PM, Roger Quadros wrote:
>>> Hi,
>>>
>>> On 02/07/2013 04:10 PM, Grazvydas Ignotas wrote:
>>>> On Thu, Feb 7, 2013 at 11:16 AM, Roger Quadros <rogerq@ti.com> wrote:
>>>> <snip>
>>>>> It seems the beagleboard problem is related to OMAP silicon errata [1].
>>>>> Apparently, remote wakeup as well as host issued wakeup break omap-ehci and have
>>>>> nothing to do with the hub or it's driver.
>>>>>
>>>>> I'll work on this issue after I'm done with device tree migration.
>>>>
>>>> Looking forward to this, mainline has been suffering from this since
>>>> almost forever..
>>>>
>>>>
>>>
>>> Unfortunately, there is another errata [2] that makes it impossible to
>>> support suspend/resume on the beagleboard.
> 
> You could fix it for BeagleBoard-xM at least, I think it is not
> affected by this as it has DM3730 (only early revisions with 1.0
> silicon of that are affected with [2]). This would also fix it for
> DM3730-based pandoras.
> 

Yes you are right. I need to get a beagleboard-xM.

cheers,
-roger

>>>
>>> [2] Advisory 3.1.1.195 HSUSB Interoperability Issue With SMSC USB3320 PHY
>>> http://www.ti.com/general/docs/lit/getliterature.tsp?literatureNumber=sprz278f&fileType=pdf