Subject: [PATCH 3/5] arm: mvebu: Added IPI support via doorbells

From: [email-masked] (Andrew Lunn)
Date: Mon, 22 Oct 2012 22:07:08 +0200

On Mon, Oct 22, 2012 at 09:07:34PM +0200, Gregory CLEMENT wrote:
> On 10/22/2012 07:30 PM, Andrew Lunn wrote:
> > On Mon, Oct 22, 2012 at 07:02:45PM +0200, Gregory CLEMENT wrote:
> >> From: Yehuda Yitschak <[email-masked]>
> >>
> >> Signed-off-by: Yehuda Yitschak <[email-masked]>
> >> Signed-off-by: Gregory CLEMENT <[email-masked]>
> >> ---
> >>  arch/arm/boot/dts/armada-xp.dtsi        |    2 +-
> >>  arch/arm/mach-mvebu/armada-370-xp.h     |   10 ++++
> >>  arch/arm/mach-mvebu/irq-armada-370-xp.c |   92 +++++++++++++++++++++++++++++--
> >>  3 files changed, 97 insertions(+), 7 deletions(-)
> >>
> >> diff --git a/arch/arm/boot/dts/armada-xp.dtsi b/arch/arm/boot/dts/armada-xp.dtsi
> >> index f521ed8..531619f 100644
> >> --- a/arch/arm/boot/dts/armada-xp.dtsi
> >> +++ b/arch/arm/boot/dts/armada-xp.dtsi
> >> @@ -24,7 +24,7 @@
> >>  
> >>  	mpic: interrupt-controller at d0020000 {
> >>  	      reg = <0xd0020a00 0x1d0>,
> >> -		    <0xd0021870 0x58>;
> >> +		    <0xd0021070 0x58>;
> >>  	};
> > 
> > Hi Gregory
> > 
> > Is this a bug fix needed for 3.7?
> > 
> >    Andrew
> > 
> I don't think so.
> We extended the reg map to be able to use registers only used for SMP.
> When we didn't have SMP support the mapping was correct, and now by
> introducing SMP we extend it.

The length has stayed the same, so its not extended. Its now 0x800
bytes earlier in the address space.

      Andrew