Re: [PATCH] usb: dwc3: turn off VBUS when leaving host mode

[Felipe Balbi <balbi@kernel.org>]

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Hi,

Bin Liu <b-liu@ti.com> writes:
>> > de-assert DRVVBUS. If left GCTL[PRTCAP] to OTG, grounding the ID pin
>> > would make the controller to assert DRVVBUS without any software
>> > involved. So the fix should be the following. Please let me know you
>> > comments.
>> 
>> But that's expected, no? If port is OTG, then it must obey ID pin rules
>> specified by OTG. IIRC, dwc3 is OTG 2.x compliant, at least the version
>> TI uses.
>
> It is expected when the usb drivers are bind to the controller. I am
> trying to solve the issue that DRVVBUS is still asserted on both host
> port and otg port with ID pin grounded when the drivers are unbind from
> the controller (after modprobe -r dwc3-omap, DRVVBUS should be
> de-asserted).

I see. Now I understand the scenario. Thanks for the explanation, Bin.

Care to send an up-to-date patch so I can queue it?

-- 
balbi

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