From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757146Ab3ANO0o (ORCPT ); Mon, 14 Jan 2013 09:26:44 -0500 Received: from mail-la0-f45.google.com ([209.85.215.45]:48988 "EHLO mail-la0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757124Ab3ANO0n (ORCPT ); Mon, 14 Jan 2013 09:26:43 -0500 MIME-Version: 1.0 Reply-To: myungjoo.ham@gmail.com In-Reply-To: <1357733199-17206-1-git-send-email-a.kesavan@samsung.com> References: <1357733199-17206-1-git-send-email-a.kesavan@samsung.com> Date: Mon, 14 Jan 2013 23:26:41 +0900 X-Google-Sender-Auth: aC1lrRYTPNqo96z6UuSVg8vQ8O0 Message-ID: Subject: Re: [PATCH 1/4] ARM: EXYNOS5: Add PPMU device tree support From: MyungJoo Ham To: Abhilash Kesavan Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, kgene.kim@samsung.com, kyungmin.park@samsung.com, rjw@sisk.pl, jhbird.choi@samsung.com Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jan 9, 2013 at 9:06 PM, Abhilash Kesavan wrote: > PPMU is required by the devfreq driver. Add a device tree > node for it. > > Signed-off-by: Abhilash Kesavan > Cc: Jonghwan Choi > Cc: Kukjin Kim Acked-by: MyungJoo Ham > --- > .../bindings/arm/exynos/ppmu-exynos5.txt | 28 ++++++++++++++++++++ > arch/arm/boot/dts/exynos5250.dtsi | 9 ++++++ > 2 files changed, 37 insertions(+), 0 deletions(-) > create mode 100644 Documentation/devicetree/bindings/arm/exynos/ppmu-exynos5.txt > > diff --git a/Documentation/devicetree/bindings/arm/exynos/ppmu-exynos5.txt b/Documentation/devicetree/bindings/arm/exynos/ppmu-exynos5.txt > new file mode 100644 > index 0000000..a424dfa > --- /dev/null > +++ b/Documentation/devicetree/bindings/arm/exynos/ppmu-exynos5.txt > @@ -0,0 +1,28 @@ > +Exynos5 PPMU driver > +------------------- > + > +Performance events are primitive values used to get performance data. These > +events provide information about the behavior of the SoC that can be used > +when analyzing system performance. These events are made visible using the > +PPMU logic. > +Exynos5 PPMU driver is used by the exynos5 devfreq driver to control the bus > +frequency/voltage. > + > +Required properties: > +- compatible: should be one of the following. > + * samsung,exynos5-ppmu - for exynos5250 type ppmu. > +- reg: > + * physical base address of the PPMUs (DDR, Right Bus and CPU) and > + length of memory mapped region. > + > +Example: > +-------- > + > + ppmu { > + compatible = "samsung,exynos5250-ppmu"; > + reg = <0x10C40000 0x2000 > + 0x10C50000 0x2000 > + 0x10C60000 0x2000 > + 0x10CB0000 0x2000 > + 0x13660000 0x2000>; > + }; > diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi > index 30485de..d504cba 100644 > --- a/arch/arm/boot/dts/exynos5250.dtsi > +++ b/arch/arm/boot/dts/exynos5250.dtsi > @@ -732,4 +732,13 @@ > interrupt-parent = <&combiner>; > interrupts = <24 1>; > }; > + > + ppmu { > + compatible = "samsung,exynos5250-ppmu"; > + reg = <0x10C40000 0x2000 /* PPMU_DDR_C */ > + 0x10C50000 0x2000 /* PPMU_DDR_R1 */ > + 0x10CB0000 0x2000 /* PPMU_DDR_L */ > + 0x13660000 0x2000 /* PPMU_DDR_RIGHT */ > + 0x10C60000 0x2000>; /* PPMU_DDR_CPU */ > + }; > }; > -- > 1.7.8.6 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-pm" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- MyungJoo Ham, Ph.D. Mobile Software Platform Lab, DMC Business, Samsung Electronics