From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752053AbbKZNrr (ORCPT ); Thu, 26 Nov 2015 08:47:47 -0500 Received: from mailout1.samsung.com ([203.254.224.24]:42645 "EHLO mailout1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751232AbbKZNrn (ORCPT ); Thu, 26 Nov 2015 08:47:43 -0500 X-AuditID: cbfee68f-f79666d0000076bb-ab-56570d7d0750 From: Chanwoo Choi To: myungjoo.ham@samsung.com, kyungmin.park@samsung.com, kgene@kernel.org, k.kozlowski@samsung.com Cc: robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, galak@codeaurora.org, linux@arm.linux.org.uk, tjakobi@math.uni-bielefeld.de, cw00.choi@samsung.com, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-samsung-soc@vger.kernel.org, devicetree@vger.kernel.org Subject: [RFC PATCH 04/15] ARM: dts: Add DMC bus freqeuncy for exynos3250-rinato/monk Date: Thu, 26 Nov 2015 22:47:28 +0900 Message-id: <1448545659-32287-5-git-send-email-cw00.choi@samsung.com> X-Mailer: git-send-email 1.8.0 In-reply-to: <1448545659-32287-1-git-send-email-cw00.choi@samsung.com> References: <1448545659-32287-1-git-send-email-cw00.choi@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprKIsWRmVeSWpSXmKPExsWyRsSkQLeWNzzM4NVpHovrX56zWsw/co7V ov/NQlaLc69WMlq8fmFo0f/4NbPF2aY37BaXd81hs/jce4TRYsb5fUwWty/zWiy9fhHIaFzB ZjFh+loWi9a9R9gt2lZ/YHUQ8Fgzbw2jR0tzD5vH5b5eJo+Vy7+weWxa1cnm8e8Yu0ffllWM Hp83yQVwRHHZpKTmZJalFunbJXBlnG99y1JwibtiadNmlgbGp5xdjJwcEgImEluPX2SBsMUk Ltxbz9bFyMUhJLCCUWLVlO8sMEUdc7vYIRJLGSVONfdBOV8YJW4+nsAIUsUmoCWx/8UNNhBb RCBF4u/N2YwgRcwCh5gkzrw7wgSSEBYIl1h28TNYA4uAqkTDok1gcV4BV4kNF+8zQayTk/iw 5xE7iM0p4CZx6soksHohoJrJH3vYIGo+sks8ulgNMUdA4tvkQ0CncgDFZSU2HWCGKJGUOLji BssERuEFjAyrGEVTC5ILipPSi4z1ihNzi0vz0vWS83M3MQJj6/S/Z/07GO8esD7EKMDBqMTD W2AbFibEmlhWXJl7iNEUaMNEZinR5HxgBOeVxBsamxlZmJqYGhuZW5opifMulPoZLCSQnliS mp2aWpBaFF9UmpNafIiRiYNTqoHRaPFp0Y/OhmzC/828T+dz1s/oeF4RN+GhytL/S27supXk vX2D7PnO2fPt/Z89L7DklZy4J5SjmbO1ybIuMkBG5uU76duz/vdulJ/l90r/sNm/ZcyJ2WWu GxInVGvbxafJOJf7rG/ZnJNT61Hw9mLQny+Ti1L4Jv9Jal/6oj5YfHpa0beDKhJKLMUZiYZa zEXFiQAMl9j7qAIAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrMIsWRmVeSWpSXmKPExsVy+t9jAd1a3vAwg9YzbBbXvzxntZh/5Byr Rf+bhawW516tZLR4/cLQov/xa2aLs01v2C0u75rDZvG59wijxYzz+5gsbl/mtVh6/SKQ0biC zWLC9LUsFq17j7BbtK3+wOog4LFm3hpGj5bmHjaPy329TB4rl39h89i0qpPN498xdo++LasY PT5vkgvgiGpgtMlITUxJLVJIzUvOT8nMS7dV8g6Od443NTMw1DW0tDBXUshLzE21VXLxCdB1 y8wBekBJoSwxpxQoFJBYXKykb4dpQmiIm64FTGOErm9IEFyPkQEaSFjDmHG+9S1LwSXuiqVN m1kaGJ9ydjFyckgImEh0zO1ih7DFJC7cW8/WxcjFISSwlFHiVHMfO4TzhVHi5uMJjCBVbAJa Evtf3GADsUUEUiT+3pzNCFLELHCISeLMuyNMIAlhgXCJZRc/gzWwCKhKNCzaBBbnFXCV2HDx PhPEOjmJD3sega3mFHCTOHVlEli9EFDN5I89bBMYeRcwMqxilEgtSC4oTkrPNcpLLdcrTswt Ls1L10vOz93ECI7gZ9I7GA/vcj/EKMDBqMTDW2AbFibEmlhWXJl7iFGCg1lJhPcWS3iYEG9K YmVValF+fFFpTmrxIUZToMMmMkuJJucDk0teSbyhsYmZkaWRuaGFkbG5kjjvhf1+YUIC6Ykl qdmpqQWpRTB9TBycUg2MbImpVybf97V3b3+80PK06pvTV7TrRLi4RbdwFjNM6joVkFV2Ie6D m6db4J/jdkGGdfq/pOwD+lb5HblaP5lxmZd3KY/AXp+X2cf7m2yk3nDHRV7/Ut92yqbw+L06 Rgm1WdOU5BxLWaP41efJ+k+8bnLj1rVswbPHzO5WhZ6U7ei9qRPIMF2JpTgj0VCLuag4EQCq ZDqL9gIAAA== DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch adds the DMC (DRAM Memory Controller) bus frequency node which includes the devfreq-events and regulator properties. The bus frequency support the DVFS (Dynamic Voltage Frequency Scaling) feature with ondemand governor. The devfreq-events (ppmu_dmc0*) can monitor the utilization of DMC bus on runtime and the buck1_reg (VDD_MIF power line) supplies the power to the DMC block. Signed-off-by: Chanwoo Choi --- arch/arm/boot/dts/exynos3250-monk.dts | 6 ++++++ arch/arm/boot/dts/exynos3250-rinato.dts | 6 ++++++ 2 files changed, 12 insertions(+) diff --git a/arch/arm/boot/dts/exynos3250-monk.dts b/arch/arm/boot/dts/exynos3250-monk.dts index 443a35085846..d982586a6533 100644 --- a/arch/arm/boot/dts/exynos3250-monk.dts +++ b/arch/arm/boot/dts/exynos3250-monk.dts @@ -498,6 +498,12 @@ }; }; +&bus_dmc { + devfreq-events = <&ppmu_dmc0_3>, <&ppmu_dmc1_3>; + vdd-supply = <&buck1_reg>; + status = "okay"; +}; + &xusbxti { clock-frequency = <24000000>; }; diff --git a/arch/arm/boot/dts/exynos3250-rinato.dts b/arch/arm/boot/dts/exynos3250-rinato.dts index 3e64d5dcdd60..61477943015b 100644 --- a/arch/arm/boot/dts/exynos3250-rinato.dts +++ b/arch/arm/boot/dts/exynos3250-rinato.dts @@ -675,6 +675,12 @@ }; }; +&bus_dmc { + devfreq-events = <&ppmu_dmc0_3>, <&ppmu_dmc1_3>; + vdd-supply = <&buck1_reg>; + status = "okay"; +}; + &xusbxti { clock-frequency = <24000000>; }; -- 1.9.1