From: Simon Horman <horms@verge.net.au>
To: linux-sh@vger.kernel.org
Subject: Re: [PATCH 1/2] ARM: shmobile: wait for MSTP clock status to toggle, when enabling it
Date: Fri, 01 Nov 2013 00:23:16 +0000 [thread overview]
Message-ID: <20131101002315.GG6818@verge.net.au> (raw)
In-Reply-To: <1383066834-25956-2-git-send-email-laurent.pinchart+renesas@ideasonboard.com>
On Fri, Nov 01, 2013 at 09:18:14AM +0900, Simon Horman wrote:
> On Thu, Oct 31, 2013 at 01:34:04PM +0100, Laurent Pinchart wrote:
> > Hi Simon,
> >
> > On Thursday 31 October 2013 14:34:48 Simon Horman wrote:
> > > On Tue, Oct 29, 2013 at 06:13:53PM +0100, Laurent Pinchart wrote:
> > > > From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
> > > >
> > > > On r-/sh-mobile SoCs MSTP clocks are used by the runtime PM to dynamically
> > > > enable and disable peripheral clocks. To make sure the clock has really
> > > > started we have to read back its status register until it confirms
> > > > success.
> > > >
> > > > Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
> > > > Signed-off-by: Laurent Pinchart
> > > > <laurent.pinchart+renesas@ideasonboard.com>
> > >
> > > Is there an impact of this patch on shmobile, that is ARM SoCs or boards
> > > based on them?
> >
> > There's no impact on existing SoCs or boards, as this patch adds support for a
> > feature that is turned on by default. SoCs need to explicitly enable it when
> > declaring the MSTP clocks to get any behaviour change.
>
> Ok. Is there a plan to make use of this on the shmobile (ARM) side?
Sorry for not being more thorough.
I now see that you have pointed out that is is used by patch 2 in this
series, which is for shmobile.
I will see if I can have a word to Paul about the best way to move
this forwards.
prev parent reply other threads:[~2013-11-01 0:23 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-29 17:13 [PATCH 1/2] ARM: shmobile: wait for MSTP clock status to toggle, when enabling it Laurent Pinchart
2013-10-31 5:34 ` Simon Horman
2013-10-31 12:34 ` Laurent Pinchart
2013-11-01 0:18 ` Simon Horman
2013-11-01 0:23 ` Simon Horman [this message]
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