Re: am335x: linux 3.16-rc3: USB DMA issue

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On Wed, Jul 2, 2014 at 3:28 PM, Yegor Yefremov
<yegorslists@xxxxxxxxxxxxxx> wrote:
> On Tue, Jul 1, 2014 at 5:37 PM, Ezequiel García
> <ezequiel@xxxxxxxxxxxxxxxxxxxx> wrote:
>> On 1 July 2014 12:07, Yegor Yefremov <yegorslists@xxxxxxxxxxxxxx> wrote:
>> [..]
>>>
>>> What can be done with these error messages:
>>>
>>> of_get_named_gpiod_flags: can't parse gpios property of node
>>> '/ocp/usb@47400000/usb-phy@47401300[0]'
>>> 47401300.usb-phy supply vcc not found, using dummy regulator
>>> musb-hdrc musb-hdrc.0.auto: Failed to request rx1.
>>> musb-hdrc musb-hdrc.0.auto: musb_init_controller failed with status -517
>>> platform musb-hdrc.0.auto: Driver musb-hdrc requests probe deferral
>>> of_get_named_gpiod_flags: can't parse gpios property of node
>>> '/ocp/usb@47400000/usb-phy@47401b00[0]'
>>> 47401b00.usb-phy supply vcc not found, using dummy regulator
>>> musb-hdrc musb-hdrc.1.auto: Failed to request rx1.
>>> musb-hdrc musb-hdrc.1.auto: musb_init_controller failed with status -517
>>> platform musb-hdrc.1.auto: Driver musb-hdrc requests probe deferral
>>> couldn't find an available UDC
>>>
>>
>> The above are typical deferal messages. Have you tried building
>> everything as a module or moving the DMA devicetree node so it's
>> probed earlier?
>>
>> But I'm not sure it's related to the problem you are seeing.
>
> Compiling as a module helped. Thanks.

I experience another issue, that happens either in monolithic kernel
or as modules. In 2-4% of power cycles the hub chip connected to USB0
won't be detected. So far I couldn't find any error messages. Any
idea?

Yegor
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