linux-kernel - Re: [PATCH 3/4] mfd: dbx500: Provide a more accurate smp

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Date:	Wed, 19 Sep 2012 18:56:00 +0200
From:	Samuel Ortiz <sameo@...ux.intel.com>
To:	Mike Turquette <mturquette@...com>
Cc:	Ulf Hansson <ulf.hansson@...ricsson.com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Linus Walleij <linus.walleij@...aro.org>,
	Lee Jones <lee.jones@...aro.org>,
	Philippe Begnic <philippe.begnic@...com>,
	Srinidhi Kasagar <srinidhi.kasagar@...ricsson.com>,
	Michel Jaouen <michel.jaouen@...ricsson.com>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Rickard Andersson <rickard.andersson@...ricsson.com>
Subject: Re: [PATCH 3/4] mfd: dbx500: Provide a more accurate smp_twd clock

Hi Mike,

On Wed, Sep 19, 2012 at 09:42:31AM -0700, Mike Turquette wrote:
> Quoting Samuel Ortiz (2012-09-19 09:02:51)
> > Hi Ulf,
> > 
> > On Fri, Aug 31, 2012 at 02:21:30PM +0200, Ulf Hansson wrote:
> > > From: Michel Jaouen <michel.jaouen@...ricsson.com>
> > > 
> > > The local timer clock is based on ARM subsystem clock. This patch
> > > obtains a more exact value of that clock by reading PRCMU registers.
> > > Using this increases the accuracy of the local timer events.
> > > 
> > > Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
> > > Signed-off-by: Rickard Andersson <rickard.andersson@...ricsson.com>
> > > Signed-off-by: Michel Jaouen <michel.jaouen@...ricsson.com>
> > > ---
> > >  drivers/mfd/db8500-prcmu.c       |   42 ++++++++++++++++++++++++++++++++++++++
> > >  drivers/mfd/dbx500-prcmu-regs.h  |    4 +++-
> > >  include/linux/mfd/dbx500-prcmu.h |    1 +
> > >  3 files changed, 46 insertions(+), 1 deletion(-)
> > > 
> > > diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c
> > > index 4f74529..e7f9539 100644
> > > --- a/drivers/mfd/db8500-prcmu.c
> > > +++ b/drivers/mfd/db8500-prcmu.c
> > > @@ -418,6 +418,9 @@ static struct {
> > >  
> > >  static atomic_t ac_wake_req_state = ATOMIC_INIT(0);
> > >  
> > > +/* Functions definition */
> > > +static void compute_armss_rate(void);
> > > +
> > I'm not a big fan of forward declarations, but I still applied your patch to
> > my for-next branch. Thanks.
> > 
> 
> Samuel,
> 
> Not sure if you were Cc'd on the rest of the patches in this series but
> after some discussion (see patch #1) I took all four patches into
> clk-next, including the MFD change.  This was done first week of
> September.  At this point those patches have shifted into my stable
> branch that I have promised not to rebase (for arm-soc dependencies).
> 
> Are you OK with me taking this patch through the clk-next branch?
Yes, I'm fine with it.

Cheers,
Samuel.

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