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SubjectRE: [PATCH 21/27] ARM: dts: exynos3250: Add PMU dt data
Date
Hi,

> -----Original Message-----
> From: linux-arm-kernel [mailto:linux-arm-kernel-
> bounces@lists.infradead.org] On Behalf Of Chanwoo Choi
> Sent: Thursday, April 10, 2014 7:06 PM
> To: kgene.kim@samsung.com; t.figa@samsung.com; linux-samsung-
> soc@vger.kernel.org
> Cc: hyunhee.kim@samsung.com; sw0312.kim@samsung.com; linux-
> kernel@vger.kernel.org; yj44.cho@samsung.com; inki.dae@samsung.com;
> cw00.choi@samsung.com; kyungmin.park@samsung.com; linux-arm-
> kernel@lists.infradead.org
> Subject: [PATCH 21/27] ARM: dts: exynos3250: Add PMU dt data
>
> From: Hyunhee Kim <hyunhee.kim@samsung.com>
>
> ARM CPU has its own PMU (Performance Monitoring Unit). This patch add
> PMU dt
> data to support PMU for CPU. Exynos3250 has four PMU interrupts.
>
> Signed-off-by: Hyunhee Kim <hyunhee.kim@samsung.com>
> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
> ---
> arch/arm/boot/dts/exynos3250.dtsi | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/arch/arm/boot/dts/exynos3250.dtsi
> b/arch/arm/boot/dts/exynos3250.dtsi
> index ceed761..2f0ca32 100644
> --- a/arch/arm/boot/dts/exynos3250.dtsi
> +++ b/arch/arm/boot/dts/exynos3250.dtsi
> @@ -280,4 +280,9 @@
> pinctrl-0 = <&i2c7_bus>;
> status = "disabled";
> };
> +
> + pmu {
> + compatible = "arm,cortex-a7-pmu";
> + interrupts = <0 18 0>, <0 19 0>, <0 20 0>, <0 21 0>;
> + };

As I know, the exynos3250 has two CPU cores. Why does it have four pmu
interrupts?
IMO it is sufficient it has only two interrupts.

Best Regards,
Chanho Park



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