Subject: [PATCH-RESEND] ARM: dts: Add arm-pmu node for exynos4412

From: [email-masked] (Chanho Park)
Date: Tue, 29 Apr 2014 15:56:45 +0900

Hi Tushar,

> -----Original Message-----
> From: Tushar Behera [mailto:tushar.behera at linaro.org]
> Sent: Tuesday, April 29, 2014 3:08 PM
> To: Chanho Park; kgene.kim at samsung.com
> Cc: linux-samsung-soc at vger.kernel.org; thomas.abraham at linaro.org; linux-
> arm-kernel at lists.infradead.org; Kyungmin Park
> Subject: Re: [PATCH-RESEND] ARM: dts: Add arm-pmu node for exynos4412
> 
> On 08/09/2013 04:11 PM, Chanho Park wrote:
> > The Exynos4412 has 4 cpus and each has a performance counter.
> > Thus, we should define 4 interrupts which are combined by irq-combiner
> for arm
> > pmu.
> >
> > Signed-off-by: Chanho Park <[email-masked]>
> > Signed-off-by: Kyungmin Park <[email-masked]>
> > ---
> >  arch/arm/boot/dts/exynos4412.dtsi |    6 ++++++
> >  1 file changed, 6 insertions(+)
> >
> > diff --git a/arch/arm/boot/dts/exynos4412.dtsi
> b/arch/arm/boot/dts/exynos4412.dtsi
> > index e743e67..cfad655 100644
> > --- a/arch/arm/boot/dts/exynos4412.dtsi
> > +++ b/arch/arm/boot/dts/exynos4412.dtsi
> > @@ -35,6 +35,12 @@
> >  			     <0 107 0>, <0 108 0>, <0 48 0>, <0 42 0>;
> >  	};
> >
> > +	pmu {
> > +		compatible = "arm,cortex-a9-pmu";
> > +		interrupt-parent = <&combiner>;
> > +		interrupts = <2 2>, <3 2>, <18 2>, <19 2>;
> > +	};
> > +
> >  	mct at 10050000 {
> >  		compatible = "samsung,exynos4412-mct";
> >  		reg = <0x10050000 0x800>;
> >
> 
> Tested on Exynos4412 based Origen-Quad board. You would required to
> rebase it on latest code though.
> 
> Tested-by: Tushar Behera <[email-masked]>

You took old patch which I cannot remember now:) Actually, arm-pmu support
for exynos4412 was already merged in the latest code.[1]. I sent a clean-up
patch recently[2]. It could be more readable for exynos4412.
Thanks.

[1] : https://lkml.org/lkml/2014/3/12/27
[2] : http://www.spinics.net/linux/lists/arm-kernel/msg325565.html

Best Regards,
Chanho Park