From patchwork Fri Aug 31 09:37:20 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "AnilKumar, Chimata" X-Patchwork-Id: 1392391 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork1.kernel.org (Postfix) with ESMTP id B5CC83FDF6 for ; Fri, 31 Aug 2012 09:42:00 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1T7NgE-0006HL-Pz; Fri, 31 Aug 2012 09:38:23 +0000 Received: from arroyo.ext.ti.com ([192.94.94.40]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1T7Nfw-00065n-GA for linux-arm-kernel@lists.infradead.org; Fri, 31 Aug 2012 09:38:08 +0000 Received: from dbdp20.itg.ti.com ([172.24.170.38]) by arroyo.ext.ti.com (8.13.7/8.13.7) with ESMTP id q7V9c1V2007760; Fri, 31 Aug 2012 04:38:02 -0500 Received: from DBDE70.ent.ti.com (localhost [127.0.0.1]) by dbdp20.itg.ti.com (8.13.8/8.13.8) with ESMTP id q7V9c0KD023319; Fri, 31 Aug 2012 15:08:00 +0530 (IST) Received: from dbdp32.itg.ti.com (172.24.170.251) by dbde70.ent.ti.com (172.24.170.148) with Microsoft SMTP Server id 14.1.323.3; Fri, 31 Aug 2012 15:07:59 +0530 Received: from localhost.localdomain (dbdp20.itg.ti.com [172.24.170.38]) by dbdp32.itg.ti.com (8.13.8/8.13.8) with ESMTP id q7V9bw9x013990; Fri, 31 Aug 2012 15:07:59 +0530 From: AnilKumar Ch To: Subject: [PATCH 2/2] arm/dts: AM33XX: Add device tree OPP table Date: Fri, 31 Aug 2012 15:07:20 +0530 Message-ID: <1346405840-31058-3-git-send-email-anilkumar@ti.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1346405840-31058-1-git-send-email-anilkumar@ti.com> References: <1346405840-31058-1-git-send-email-anilkumar@ti.com> MIME-Version: 1.0 X-Spam-Note: CRM114 invocation failed X-Spam-Score: -7.1 (-------) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-7.1 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [192.94.94.40 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.2 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: linux-pm@vger.kernel.org, devicetree-discuss@lists.ozlabs.org, cpufreq@vger.kernel.org, grant.likely@secretlab.ca, AnilKumar Ch , linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Add DT OPP table for AM33XX family of devices. This data is decoded by OF with of_init_opp_table() helper function. Also adds cpu0 supply name to the corresponding dts files. cpu0-supply name is used by cpufreq-cpu0 driver to get the regulator pointer for voltage modifications. Signed-off-by: AnilKumar Ch --- arch/arm/boot/dts/am335x-bone.dts | 6 ++++++ arch/arm/boot/dts/am335x-evm.dts | 6 ++++++ arch/arm/boot/dts/am33xx.dtsi | 15 +++++++++++++++ 3 files changed, 27 insertions(+) diff --git a/arch/arm/boot/dts/am335x-bone.dts b/arch/arm/boot/dts/am335x-bone.dts index ce486fc..2767b5f 100644 --- a/arch/arm/boot/dts/am335x-bone.dts +++ b/arch/arm/boot/dts/am335x-bone.dts @@ -13,6 +13,12 @@ model = "TI AM335x BeagleBone"; compatible = "ti,am335x-bone", "ti,am33xx"; + cpus { + cpu@0 { + cpu0-supply = <&dcdc2_reg>; + }; + }; + memory { device_type = "memory"; reg = <0x80000000 0x10000000>; /* 256 MB */ diff --git a/arch/arm/boot/dts/am335x-evm.dts b/arch/arm/boot/dts/am335x-evm.dts index baa3276..54d972c 100644 --- a/arch/arm/boot/dts/am335x-evm.dts +++ b/arch/arm/boot/dts/am335x-evm.dts @@ -13,6 +13,12 @@ model = "TI AM335x EVM"; compatible = "ti,am335x-evm", "ti,am33xx"; + cpus { + cpu@0 { + cpu0-supply = <&vdd1_reg>; + }; + }; + memory { device_type = "memory"; reg = <0x80000000 0x10000000>; /* 256 MB */ diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi index ab744d6..2043b53 100644 --- a/arch/arm/boot/dts/am33xx.dtsi +++ b/arch/arm/boot/dts/am33xx.dtsi @@ -25,6 +25,21 @@ cpus { cpu@0 { compatible = "arm,cortex-a8"; + + /* + * To consider voltage drop between PMIC and SoC, + * tolerance value is reduced to 2% from 4% and + * voltage value is increased as a precaution. + */ + operating-points = < + /* kHz uV */ + 720000 1285000 + 600000 1225000 + 500000 1125000 + 275000 1125000 + >; + voltage-tolerance = <2>; /* 2 percentage */ + clock-latency = <300000>; /* From omap-cpufreq driver */ }; };