From mboxrd@z Thu Jan  1 00:00:00 1970
From: plagnioj@jcrosoft.com (Jean-Christophe PLAGNIOL-VILLARD)
Date: Mon, 20 Sep 2010 17:15:11 +0200
Subject: [PATCH] arm: fix use of clock disable on idle for simple AT91
	devices
In-Reply-To: <20100920081448.GC32018@game.jcrosoft.org>
References: <201009080122.o881MCXi015409@goober.internal.moreton.com.au>
	<20100920081448.GC32018@game.jcrosoft.org>
Message-ID: <20100920151511.GE32018@game.jcrosoft.org>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On 10:14 Mon 20 Sep     , Jean-Christophe PLAGNIOL-VILLARD wrote:
> On 11:22 Wed 08 Sep     , Greg Ungerer wrote:
> > 
> > Not all types of AT91 device have the PMC hardware unit. Don't do a
> > clock disable at idle on those family members that don't have it.
> > 
> > Signed-off-by: Greg Ungerer <gerg@uclinux.org>
> > ---
> >  arch/arm/mach-at91/include/mach/system.h |    2 +-
> >  1 files changed, 1 insertions(+), 1 deletions(-)
> > 
> > diff --git a/arch/arm/mach-at91/include/mach/system.h b/arch/arm/mach-at91/include/mach/system.h
> > index c80e090..0bc497f 100644
> > --- a/arch/arm/mach-at91/include/mach/system.h
> > +++ b/arch/arm/mach-at91/include/mach/system.h
> > @@ -28,7 +28,7 @@
> >  
> >  static inline void arch_idle(void)
> >  {
> > -#ifndef CONFIG_DEBUG_KERNEL
> > +#if defined(AT91_PMC) && !defined(CONFIG_DEBUG_KERNEL)
> we can do this on at91x40 also
cf PS Control Register
p52 of the datasheet

Best Regards,
J.