linux-kernel - Re: [PATCHv3 2/4] ACPI / LPSS: custom power domain for LPSS

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Message-ID: <2206183.6DSdmh5SWp@vostro.rjw.lan>
Date:	Mon, 26 May 2014 23:30:27 +0200
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Cc:	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Jin Yao <yao.jin@...ux.intel.com>,
	Li Aubrey <aubrey.li@...ux.intel.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCHv3 2/4] ACPI / LPSS: custom power domain for LPSS

On Monday, May 26, 2014 04:42:34 PM Heikki Krogerus wrote:
> On Mon, May 26, 2014 at 03:03:27PM +0200, Rafael J. Wysocki wrote:
> > On Friday, May 23, 2014 04:15:09 PM Heikki Krogerus wrote:
> > > A power domain where we save the context of the additional
> > > LPSS registers. We need to do this or all LPSS devices are
> > > left in reset state when resuming from D3 on some Baytrails.
> > > The devices with the fractional clock divider also have
> > > zeros for N and M values after resuming unless they are
> > > reset.
> > > 
> > > Li Aubrey found the root cause for the issue. The idea of
> > > using power domain for LPSS came from Mika Westerberg.
> > > 
> > > Reported-by: Jin Yao <yao.jin@...ux.intel.com>
> > > Suggested-by: Li Aubrey <aubrey.li@...ux.intel.com>
> > > Tested-by: Mika Westerberg <mika.westerberg@...ux.intel.com>
> > > Signed-off-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
> > 
> > Queued up for 3.16, but I needed to rebase it to take some other changes
> > into account.  Can you please have a look and the bleeding-edge branch in
> > my tree and see if everything looks good in there?
> 
> I checked the bleeding-edge and it looks good to me. Thanks for taking
> care of the issue with "%lx".
> 
> About the sparse warning from the clk-fractional-divider.c. Since
> there is no real issue, let's follow the style in the other clock
> types and ignore the warning. So let's keep that patch as it is. OK?

That's fine by me.

Rafael

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