From patchwork Mon Feb 25 17:17:13 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guennadi Liakhovetski X-Patchwork-Id: 2181641 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 A56763FCA4 for ; Mon, 25 Feb 2013 17:20:19 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1UA1gP-0003El-7G; Mon, 25 Feb 2013 17:17:45 +0000 Received: from moutng.kundenserver.de ([212.227.17.9]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1UA1g9-0003AW-NZ for linux-arm-kernel@lists.infradead.org; Mon, 25 Feb 2013 17:17:30 +0000 Received: from axis700.grange (dslb-094-221-097-094.pools.arcor-ip.net [94.221.97.94]) by mrelayeu.kundenserver.de (node=mreu1) with ESMTP (Nemesis) id 0MH3Pq-1U55zv2nhK-00E3nj; Mon, 25 Feb 2013 18:17:13 +0100 Received: by axis700.grange (Postfix, from userid 1000) id 5ABA840BB4; Mon, 25 Feb 2013 18:17:13 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by axis700.grange (Postfix) with ESMTP id 57B7340BB3; Mon, 25 Feb 2013 18:17:13 +0100 (CET) Date: Mon, 25 Feb 2013 18:17:13 +0100 (CET) From: Guennadi Liakhovetski X-X-Sender: lyakh@axis700.grange To: linux-sh@vger.kernel.org Subject: [PATCH/RFC v2 2/2] ARM: shmobile: kzm9g-reference: add CPUFreq support In-Reply-To: Message-ID: References: MIME-Version: 1.0 X-Provags-ID: V02:K0:7G+IV60CnmJGg0C8VGOolYdxC4SpxW7wuaATKjAl43l Z7EANrEr13Cxpkjj8RA1MLZcMeRfNVcGHklWlumIiD19qc9icK hUndWkoFxisalxZtSs+Gg+rLSpE4O7VHDtc65kEtiT0k5x7UdM sX+ggvp/jYVd7vr5DV7ZglMBhX4tyLovqQbhXyo+yIVeXCZnXI 9t1aeDnb6SyH050c4Mm7dnfkJRqudX5e/CSbmqmstknzGF9YB1 MAG8KE9iDPlzokc+NX1DtjxBQSiAPFVhJVkcjzFiEzhsH/TZdB 2netjQcL4Gpnj+z3+dzj2miKNNhUyD569zY6/rTbigUzdxR84P sdqP6Ipqiwvb+1ihX5TRkww2zZV3mTYGOYuRjIYHGHTxT/WfJS JhKdlyQNXLE9Q== X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130225_121730_039163_D89A0F2C X-CRM114-Status: GOOD ( 13.50 ) X-Spam-Score: -2.6 (--) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-2.6 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [212.227.17.9 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (g.liakhovetski[at]gmx.de) -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record -0.7 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: "Rafael J. Wysocki" , Simon Horman , Magnus Damm , cpufreq@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 This patch enables the use of the generic cpufreq-cpu0 driver on kzm9g. Providing a regulator and a list of OPPs in DT, combined with a clock, attached to the cpu0 device is everything, the cpufreq-cpu0 driver needs. Signed-off-by: Guennadi Liakhovetski --- v2: adjust CPU frequencies in the OPP list according to v2 of patch 1/2. arch/arm/boot/dts/sh73a0-kzm9g-reference.dts | 19 ++++++++++++++++--- arch/arm/mach-shmobile/Kconfig | 2 ++ 2 files changed, 18 insertions(+), 3 deletions(-) diff --git a/arch/arm/boot/dts/sh73a0-kzm9g-reference.dts b/arch/arm/boot/dts/sh73a0-kzm9g-reference.dts index d9f6c18..d7f18fd 100644 --- a/arch/arm/boot/dts/sh73a0-kzm9g-reference.dts +++ b/arch/arm/boot/dts/sh73a0-kzm9g-reference.dts @@ -18,6 +18,19 @@ model = "KZM-A9-GT"; compatible = "renesas,kzm9g-reference", "renesas,sh73a0"; + cpus { + cpu@0 { + cpu0-supply = <&vdd_dvfs>; + operating-points = < + /* kHz uV */ + 1196000 1315000 + 598000 1175000 + 398667 1065000 + >; + voltage-tolerance = <1>; /* 1% */ + }; + }; + chosen { bootargs = "console=tty0 console=ttySC4,115200 root=/dev/nfs ip=dhcp ignore_loglevel earlyprintk=sh-sci.4,115200"; }; @@ -118,10 +131,10 @@ reg = <0x40>; regulators { - sd1 { + vdd_dvfs: sd1 { regulator-name = "1.315V CPU"; - regulator-min-microvolt = <1315000>; - regulator-max-microvolt = <1335000>; + regulator-min-microvolt = <1050000>; + regulator-max-microvolt = <1350000>; regulator-always-on; regulator-boot-on; }; diff --git a/arch/arm/mach-shmobile/Kconfig b/arch/arm/mach-shmobile/Kconfig index 927eecc..6f621ac 100644 --- a/arch/arm/mach-shmobile/Kconfig +++ b/arch/arm/mach-shmobile/Kconfig @@ -141,6 +141,8 @@ config MACH_KZM9G config MACH_KZM9G_REFERENCE bool "KZM-A9-GT board - Reference Device Tree Implementation" depends on ARCH_SH73A0 + select ARCH_HAS_CPUFREQ + select ARCH_HAS_OPP select ARCH_REQUIRE_GPIOLIB select REGULATOR_FIXED_VOLTAGE if REGULATOR select SND_SOC_AK4642 if SND_SIMPLE_CARD