From patchwork Wed Oct 15 06:35:20 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chander Kashyap X-Patchwork-Id: 5084081 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 CF4F99F349 for ; Wed, 15 Oct 2014 06:38:13 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 1073F2011B for ; Wed, 15 Oct 2014 06:38:13 +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 08E07200F4 for ; Wed, 15 Oct 2014 06:38:12 +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 1XeIBs-00010y-RS; Wed, 15 Oct 2014 06:36:08 +0000 Received: from mail-pd0-x22e.google.com ([2607:f8b0:400e:c02::22e]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1XeIBl-0000jS-Ma for linux-arm-kernel@lists.infradead.org; Wed, 15 Oct 2014 06:36:03 +0000 Received: by mail-pd0-f174.google.com with SMTP id y13so697059pdi.5 for ; Tue, 14 Oct 2014 23:35:39 -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=No9F2rxrvSS8Zn5rM1C+Squy42gygRcaN+RM8qtXhbY=; b=ll+0ef9A7RBnxhtbc9KXWpqX/ZrosQHolvrNGjCbjvrwJ1tM7u716aqTeYKjmUYZlO SpAVXiHa6O199zE/P0m/w5jxcTOpEhQVdJtBi1UtRaM5yI2ztYzFUaNbbXUIzi22tQl2 XTv7yqnKz+fwso0YKteeFNE0GBGBdhQIVyzeSyTJxM/JUpLxNSu6aB8zteW29/GH44fp lmwXOjYSSP+SeRkeNC1TpdhEOr5daXkmgEbFwzZZR+KQ9kwgZLD3Wo5i8ShDBxeyjBUb Ke6zEaTuRDKrBjEWqOaGE8+Y28FurgjPJIuQnMS6eiqp59f8pnWUUAPvmoS9uYSQI5mQ zi3w== X-Received: by 10.68.194.136 with SMTP id hw8mr10370186pbc.17.1413354939690; Tue, 14 Oct 2014 23:35:39 -0700 (PDT) Received: from localhost.localdomain ([14.140.216.146]) by mx.google.com with ESMTPSA id jc3sm13034738pbb.49.2014.10.14.23.35.35 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 14 Oct 2014 23:35:39 -0700 (PDT) From: Chander Kashyap To: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org Subject: [PATCH] arm64: dts: exynos7: add support for cpuidle core power down Date: Wed, 15 Oct 2014 12:05:20 +0530 Message-Id: <1413354920-20165-1-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-20141014_233601_767653_33517ECF X-CRM114-Status: UNSURE ( 9.52 ) 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=-1.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_NONE, T_DKIM_INVALID, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=no 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 - [PATCH v9 0/8] ARM generic idle states http://permalink.gmane.org/gmane.linux.power-management.general/49224 arch/arm64/boot/dts/exynos/exynos7.dtsi | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/arch/arm64/boot/dts/exynos/exynos7.dtsi b/arch/arm64/boot/dts/exynos/exynos7.dtsi index ce221ac..8e0a034 100644 --- a/arch/arm64/boot/dts/exynos/exynos7.dtsi +++ b/arch/arm64/boot/dts/exynos/exynos7.dtsi @@ -36,6 +36,7 @@ device_type = "cpu"; compatible = "arm,cortex-a57", "arm,armv8"; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP>; reg = <0x0>; }; @@ -43,6 +44,7 @@ device_type = "cpu"; compatible = "arm,cortex-a57", "arm,armv8"; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP>; reg = <0x1>; }; @@ -50,6 +52,7 @@ device_type = "cpu"; compatible = "arm,cortex-a57", "arm,armv8"; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP>; reg = <0x2>; }; @@ -57,8 +60,23 @@ device_type = "cpu"; compatible = "arm,cortex-a57", "arm,armv8"; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP>; reg = <0x3>; }; + + 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>; + status = "enabled"; + }; + }; }; psci {