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From:   bugzilla-daemon@bugzilla.kernel.org
To:     linux-usb@vger.kernel.org
Subject: [Bug 206435] dwc3 dwc3.3.auto: no usb2 phy configured
Date:   Fri, 07 Feb 2020 08:52:25 +0000
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https://bugzilla.kernel.org/show_bug.cgi?id=206435

--- Comment #7 from alexandre.torgue@st.com ---
Hi Felipe,

On 2/6/20 7:33 PM, Felipe Balbi wrote:
> 
> + Heikki, since this is, apparently, Bay Trail
> 
> Felipe Balbi <balbi@kernel.org> writes:
> 
>> Hi,
>>
>> bugzilla-daemon@bugzilla.kernel.org writes:
>>> https://bugzilla.kernel.org/show_bug.cgi?id=206435
>>>
>>> --- Comment #3 from youling257@gmail.com ---
>>> Revert 987351e1ea7772cf2f0795e917fb33b2e282e1c1 phy: core: Add consumer
>>> device
>>> link support, dwc3 work for my z3735f device.
>>>
>>> android_x86:/ $ su
>>> android_x86:/ # dmesg | grep dwc
>>> [    9.724606] dwc3 dwc3.3.auto: changing max_speed on rev 5533210a
>>> [   47.488501] udc dwc3.3.auto: registering UDC driver [g1]
>>
>> reverting that commit makes dwc3 work? Then you don't have a bug on
>> dwc3. You have a regression caused by another commit.
>>
>> Alexandre, any idea what's going on?
> 

It's probably due to error returned by "device_link-add" function called 
in phy-get (phy-core.c). Maybe because phy dev is not present. I wonder 
if we should update device_link_add error management in phy-get (if link 
add fails it's maybe not a reason to make the consumer probe fail)

regards
Alex

> Heikki, any ideas?
>

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