From mboxrd@z Thu Jan  1 00:00:00 1970
From: Minas Harutyunyan <Minas.Harutyunyan-HKixBCOQz3hWk0Htik3J/w@public.gmane.org>
Subject: Re: High CPU load produced by USB (DW2)
Date: Tue, 6 Mar 2018 06:45:45 +0000
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To: Marek Vasut <marek.vasut-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Minas Harutyunyan <Minas.Harutyunyan-HKixBCOQz3hWk0Htik3J/w@public.gmane.org>, Mirza Krak <mirza.krak-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: gregkh <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>, "linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org" <linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>, linux-usb <linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, "John.Youn-HKixBCOQz3hWk0Htik3J/w@public.gmane.org" <John.Youn-HKixBCOQz3hWk0Htik3J/w@public.gmane.org>
List-Id: linux-rockchip.vger.kernel.org

Hi,

On 3/5/2018 11:14 PM, Marek Vasut wrote:
> On 02/20/2018 06:51 AM, Minas Harutyunyan wrote:
> [...]
>>>>> Is there a way to reduce that or is that the absolute minimum in HS mode?
>>>>>
>>>> We already discussed, in this email thread earlier, why SOF interrupts
>>>> required and unmasked.
>>>> Only in case when connected device with CTRL+BLK EP's only (like flash
>>>> drive) and directly connected to cores root HUB, SOF's will be masked.
>>>
>>> That's the setup I have on Altera SoCFPGA, yet the SOFs are still present.
>>>
>> Could you please send verbose lsusb on connected to dwc2 device
> 
> See attached
> 
>> and driver debug log.
> 
> What exactly do you mean by this one ?
Enable debugging messages and verbose debugging messages for dwc2 from 
make menuconfig. Provide dmesg starting from dwc2 load till HS device 
connected to dwc2 port and enumerated.

Thanks,
Minas

>