Re: [PATCH v3 0/6] power: add power sequence library

From	Peter Chen <hzpeterchen@gmail.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH v3 0/6] power: add power sequence library
Date	2016-08-02 03:40 +0200
Message-ID	<s1wQx-5YM-13@gated-at.bofh.it> (permalink)
References	<rXij8-5uu-27@gated-at.bofh.it> <rZVT3-8jp-3@gated-at.bofh.it> <rZWFr-oF-3@gated-at.bofh.it> <s1mRc-7Ds-17@gated-at.bofh.it>
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On Mon, Aug 01, 2016 at 07:55:10AM -0700, Joshua Clayton wrote:
> 
> 
> On 07/28/2016 09:41 AM, Fabio Estevam wrote:
> > Hi Joshua,
> >
> > On Thu, Jul 28, 2016 at 12:56 PM, Joshua Clayton
> > <stillcompiling@gmail.com> wrote:
> >
> >> I assume there is a v4 coming due to rmk's comments on patch 5.
> >> I couldn't figure out where to null the of_node in error paths, but in testing
> >> we did put a line of code to null the of_node on release.
> >>
> >> but...
> >> As an aside,
> >> I was hoping this series would magically fix a problem
> >> with the imx6q-evi which has forced us to disable
> >> runtime power management. But it did not. :(
> > I also see a similar problem on a mx28 board with a hub.
> >
> > Does it help in your case if you pass 'usbcore.autosuspend=-1' in the
> > kernel command line?
> >
> > Regards,
> >
> > Fabio Estevam
> Thanks a million, Fabio!
> 
> 'usbcore.autosuspend=-1' quiets the errors.
> 
> ~joshua
> 

If you are using imx6q, there are some patches which is not upstreamed
to workaround one SoC problem.

http://www.spinics.net/lists/linux-usb/msg98682.html

Try to implement the design for notify_suspend/resume at
drivers/usb/phy/phy-mxs-usb.c and drivers/usb/chipidea/host.c

You can refer to the code at:
http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/tree/?h=imx_4.1.15_1.0.0_ga

-- 

Best Regards,
Peter Chen

Thread

Re: [PATCH v3 0/6] power: add power sequence library Joshua Clayton <stillcompiling@gmail.com> - 2016-07-28 18:00 +0200
  Re: [PATCH v3 0/6] power: add power sequence library Fabio Estevam <festevam@gmail.com> - 2016-07-28 18:50 +0200
    Re: [PATCH v3 0/6] power: add power sequence library Joshua Clayton <stillcompiling@gmail.com> - 2016-08-01 17:00 +0200
      Re: [PATCH v3 0/6] power: add power sequence library Fabio Estevam <festevam@gmail.com> - 2016-08-01 18:40 +0200
      Re: [PATCH v3 0/6] power: add power sequence library Peter Chen <hzpeterchen@gmail.com> - 2016-08-02 03:40 +0200
  Re: [PATCH v3 0/6] power: add power sequence library Peter Chen <hzpeterchen@gmail.com> - 2016-07-29 04:00 +0200

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