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From: Mika Westerberg <mika.westerberg@linux.intel.com>
To: Lucas De Marchi <lucas.de.marchi@gmail.com>
Cc: linux-i2c@vger.kernel.org, lkml <linux-kernel@vger.kernel.org>,
	Wolfram Sang <wsa@the-dreams.de>,
	Jarkko Nikula <jarkko.nikula@linux.intel.com>,
	Fabio Mello <fabio.mello@intel.com>,
	Lucas De Marchi <lucas.demarchi@intel.com>
Subject: Re: [PATCH] i2c: designware: use enable on resume instead initialization
Date: Mon, 15 Jun 2015 12:29:03 +0300	[thread overview]
Message-ID: <20150615092903.GG1478@lahna.fi.intel.com> (raw)
In-Reply-To: <CAKi4VA+6UBD8BeT-a0H=UiPM8OFiTD9cfTSEhX5scE+3EJPRfg@mail.gmail.com>

On Fri, Jun 12, 2015 at 07:45:00PM -0300, Lucas De Marchi wrote:
> Hi Mika,
> 
> On Wed, Jun 10, 2015 at 4:55 AM, Mika Westerberg
> <mika.westerberg@linux.intel.com> wrote:
> > On Mon, Jun 08, 2015 at 02:50:28PM -0300, lucas.de.marchi@gmail.com wrote:
> >> @@ -320,7 +320,7 @@ static int dw_i2c_resume(struct device *dev)
> >>       clk_prepare_enable(i_dev->clk);
> >>
> >>       if (!i_dev->pm_runtime_disabled)
> >> -             i2c_dw_init(i_dev);
> >> +             i2c_dw_enable(i_dev);
> >
> > This will not work if the device power gets removed (for example being
> > put to D3cold) as it looses context.
> 
> Do you mean we should keep the i2c_dw_init() here?

Yes, that's safer if the controller power gets removed.

      reply	other threads:[~2015-06-15  9:29 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-08 17:50 [PATCH] i2c: designware: use enable on resume instead initialization lucas.de.marchi-Re5JQEeQqe8AvxtiuMwx3w
     [not found] ` <1433785828-4100-1-git-send-email-lucas.de.marchi-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-06-09  8:51   ` Mika Westerberg
     [not found]     ` <20150609085146.GD1478-3PARRvDOhMZrdx17CPfAsdBPR1lH4CV8@public.gmane.org>
2015-06-09 18:29       ` Lucas De Marchi
     [not found]         ` <CAKi4VAJwD45VbWuCHegfkB-tbgvgza52-cgVNF4AxF8NCuYyRQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-06-10  7:07           ` Mika Westerberg
     [not found]             ` <OF847FFF39.1FF5F96A-ONC1257E60.00506AFD-C1257E60.0052A8CE@alitech.com>
     [not found]               ` <OF847FFF39.1FF5F96A-ONC1257E60.00506AFD-C1257E60.0052A8CE-Yycd8EPnGM5BDgjK7y7TUQ@public.gmane.org>
2015-06-11  9:38                 ` Mika Westerberg
2015-06-11 14:48                 ` Lucas De Marchi
     [not found]             ` <OF847FFF39.1FF5F96A-ONC1257E60.00506AFD-C1257E60.0052A8CE@LocalDomain>
2015-06-23 16:45               ` christian.ruppert-Yycd8EPnGM5BDgjK7y7TUQ
     [not found]                 ` <OFB47A681B.5488F019-ONC1257E6D.005A6CD2-C1257E6D.005BD52F-Yycd8EPnGM5BDgjK7y7TUQ@public.gmane.org>
2015-06-23 17:02                   ` Lucas De Marchi
     [not found]                     ` <CAKi4VA+t3d-XoqDiL9ez+9qDR_ndgGnAOhkpZsJyJ2tMjfCYLA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-06-24  7:36                       ` christian.ruppert-Yycd8EPnGM5BDgjK7y7TUQ
     [not found]                         ` <OFB918064C.F72245F4-ONC1257E6E.00287EC7-C1257E6E.00299EF2-Yycd8EPnGM5BDgjK7y7TUQ@public.gmane.org>
2015-06-24 11:27                           ` Mika Westerberg
     [not found]                             ` <20150624112723.GE827-3PARRvDOhMZrdx17CPfAsdBPR1lH4CV8@public.gmane.org>
2015-06-24 12:56                               ` De Marchi, Lucas
     [not found]                                 ` <1435150578.1075.5.camel-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2015-06-24 13:18                                   ` mika.westerberg-VuQAYsv1563Yd54FQh9/CA
2015-06-24 14:06                                   ` christian.ruppert-Yycd8EPnGM5BDgjK7y7TUQ
2015-06-10  7:55   ` Mika Westerberg
     [not found]     ` <20150610075555.GO1478-3PARRvDOhMZrdx17CPfAsdBPR1lH4CV8@public.gmane.org>
2015-06-12 22:45       ` Lucas De Marchi
2015-06-15  9:29         ` Mika Westerberg [this message]

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