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Date:   Tue, 25 Sep 2018 10:04:07 +0000
From:   Artur Petrosyan <>
To:     John Stultz <>,
        Artur Petrosyan <>
CC:     Minas Harutyunyan <>,
        lkml <>,
        John Youn <>,
        "Felipe Balbi" <>,
        "" <>,
        Manivannan Sadhasivam <>
Subject: Re: [PATCH] usb: dwc2: Fix HiKey regression caused by power_down

Hi John,

On 9/24/2018 22:52, John Stultz wrote:
> On Sun, Sep 23, 2018 at 10:57 PM, Artur Petrosyan
> <> wrote:
>> Hi John,
>> On 9/21/2018 05:05, John Stultz wrote:
>>> On Thu, Sep 20, 2018 at 7:17 AM, Artur Petrosyan
>>> <> wrote:
>>>> On 5/23/2018 01:57, John Stultz wrote:
>>>>> Its done automatically, when the OTG cable is detected it the host
>>>>> ports are disabled and when the OTG port is empty the host ports are
>>>>> enabled.
>>>>> Let me know if you need anything else!
>>>> Please apply the patch set with this cover letter "[PATCH 0/3] usb:
>>>> dwc2: Fix hibernation for switching between host and device modes."
>>> Sorry, can you send the patches to me, or point me to a git tree? I'm
>>> not seeing that thread in my mailbox or on google.
>>>> Enable the power down on his devices. Let me know if you still see any
>>>> issue. If there is no issue, please provide Tested-by tag.
>>> Would be happy to test it, thought I'm traveling tomorrow, so I may
>>> not be able to validate till monday.
>>> thanks
>>> -john
>> You can find the patch set following to this link.
> I applied those three patches, and it seems to work ok.
> Just to be clear, was there anything else I was needing to do while testing it?
> Otherwise,
> Tested-by: John Stultz <>   #On HiKey
> thanks
> -john

Just a clarification by this commit "[PATCH] usb: dwc2: Fix HiKey 
regression caused by power_down feature"

the power_down is disabled setting "p->power_down = false;" in 
"dwc2_set_his_params" function.

Could you please clarify that the testes done for those 3 patches were 
done enabling "p->power_down = true;" in "dwc2_set_his_params" function.


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