From patchwork Mon Oct 20 09:58:27 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chander Kashyap X-Patchwork-Id: 5103911 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 6FEF89F65C for ; Mon, 20 Oct 2014 10:01:41 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 896BD20149 for ; Mon, 20 Oct 2014 10:01:40 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B656120142 for ; Mon, 20 Oct 2014 10:01:39 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Xg9kO-0005ZV-Mf; Mon, 20 Oct 2014 09:59:28 +0000 Received: from mail-pa0-x233.google.com ([2607:f8b0:400e:c03::233]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Xg9kE-0005ED-5V for linux-arm-kernel@lists.infradead.org; Mon, 20 Oct 2014 09:59:19 +0000 Received: by mail-pa0-f51.google.com with SMTP id lj1so4833324pab.24 for ; Mon, 20 Oct 2014 02:58:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=sender:from:to:cc:subject:date:message-id; bh=YWpKWazY2XR0l3/ZSJkOkVGt96qpNloYcT9C6S+OtaU=; b=oMuhruP8tKYnhuESoH11u+d3DGhJaTsdsVvFuxh8jYCZQdaMDscwOvm5A+egvPdYto 0L/O1udPsBeb8bc+EMGqypNQon8cq9bqdwXgSvXxjomSMvZ2Z4p1vzDtQMil26oCBjZA ejIRmhYAeKCAM8OK6Di2ton45GdgtHe8pLbX6OkeIoqV3Wrz/jOZikv1q5Vl0r3oRm+C gokDnGclCB6EO/7ZAYOXN/UGUdx+etoTa+UyXEXFBt8S3grQzBHNIkTbSFXrnF7Pt/eR PADiX5WAAygoNRcpboqUS4E8jFAk5/EY7uAbTwsSvadXL6rzGRszHY52Uqm5IxYX+HS0 xl5w== X-Received: by 10.70.56.70 with SMTP id y6mr26647470pdp.61.1413799136405; Mon, 20 Oct 2014 02:58:56 -0700 (PDT) Received: from chander-ubuntu.localdomain6 ([14.140.216.146]) by mx.google.com with ESMTPSA id cn1sm8764349pdb.13.2014.10.20.02.58.52 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 20 Oct 2014 02:58:55 -0700 (PDT) From: Chander Kashyap To: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org Subject: [PATCH v2] arm64: dts: exynos7: add support for cpuidle core power down Date: Mon, 20 Oct 2014 15:28:27 +0530 Message-Id: <1413799107-12307-1-git-send-email-k.chander@samsung.com> X-Mailer: git-send-email 1.9.1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20141020_025918_311172_A91F5CF3 X-CRM114-Status: UNSURE ( 9.86 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.7 (/) Cc: mark.rutland@arm.com, Chander Kashyap , lorenzo.pieralisi@arm.com, catalin.marinas@arm.com, daniel.lezcano@linaro.org, rjw@rjwysocki.net, kgene.kim@samsung.com, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-3.2 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_NONE,RP_MATCHES_RCVD,T_DKIM_INVALID,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Exynos7 has core power down state where cores can be powered off independently. This patch adds support for this state. Signed-off-by: Chander Kashyap --- This patch has following dependencies: - [PATCH v5 0/8] arch: arm64: Enable support for Samsung Exynos7 SoC http://www.spinics.net/lists/linux-samsung-soc/msg37047.html Changes in v2: - Moved the cpu-idle-state property after reg property - removed the status property. arch/arm64/boot/dts/exynos/exynos7.dtsi | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/arch/arm64/boot/dts/exynos/exynos7.dtsi b/arch/arm64/boot/dts/exynos/exynos7.dtsi index 50ae936..444dde1 100644 --- a/arch/arm64/boot/dts/exynos/exynos7.dtsi +++ b/arch/arm64/boot/dts/exynos/exynos7.dtsi @@ -37,6 +37,7 @@ compatible = "arm,cortex-a57", "arm,armv8"; enable-method = "psci"; reg = <0x0>; + cpu-idle-states = <&CPU_SLEEP>; }; cpu@1 { @@ -44,6 +45,7 @@ compatible = "arm,cortex-a57", "arm,armv8"; enable-method = "psci"; reg = <0x1>; + cpu-idle-states = <&CPU_SLEEP>; }; cpu@2 { @@ -51,6 +53,7 @@ compatible = "arm,cortex-a57", "arm,armv8"; enable-method = "psci"; reg = <0x2>; + cpu-idle-states = <&CPU_SLEEP>; }; cpu@3 { @@ -58,6 +61,20 @@ compatible = "arm,cortex-a57", "arm,armv8"; enable-method = "psci"; reg = <0x3>; + cpu-idle-states = <&CPU_SLEEP>; + }; + + idle-states { + entry-method = "arm,psci"; + + CPU_SLEEP: cpu-sleep { + compatible = "arm,idle-state"; + local-timer-stop; + arm,psci-suspend-param = <0x0010000>; + entry-latency-us = <20>; + exit-latency-us = <150>; + min-residency-us = <2100>; + }; }; };