From patchwork Tue Sep 10 15:25:18 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anson Huang X-Patchwork-Id: 11138691 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 202FA1395 for ; Tue, 10 Sep 2019 03:26:56 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id F15E42086A for ; Tue, 10 Sep 2019 03:26:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="rXmG826v" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F15E42086A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=Yz9bx97/Q9unJdlsCGZjTEAYCi9y803SFCoqDWk+1kg=; b=rXmG826vwZcLI072XCnnty05e0 MeiU6umnyS/eRkrkqarkWKrRRZmlAAISw/mSC1jhFe0kNr0+U5fzgQMdHz1ZicwJWh23pt6EMLzhq xdS2vIxHfUOh6XTSzK5sCv3W6f3DdU4jykmI+2jffuSgQfyA+eEth1vK+X0Vto8QcPImi44ITX7sR ugpiJ9eUbGJwacPeGLzLvFKR/UUXG0SrK17m/abg1XrPxpcjvpGTwP//aTp1hUwlXPdsMZASgdAK+ jZ/+QdT4/LcPaVozyXZtXSRUfeq5oUFCVTz6el+eHxjxKOK8my93HQGTJgoisWn06RAxFCjxbezlQ t1BfkV7w==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i7Wnq-0008Rm-0s; Tue, 10 Sep 2019 03:26:50 +0000 Received: from inva020.nxp.com ([92.121.34.13]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i7Wnf-0008In-Cd for linux-arm-kernel@lists.infradead.org; Tue, 10 Sep 2019 03:26:40 +0000 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id A15AF1A0869; Tue, 10 Sep 2019 05:26:35 +0200 (CEST) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 46C9E1A0454; Tue, 10 Sep 2019 05:26:30 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id 71BA5402BF; Tue, 10 Sep 2019 11:26:23 +0800 (SGT) From: Anson Huang To: robh+dt@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, leonard.crestez@nxp.com, daniel.baluta@nxp.com, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/2] arm64: dts: imx8mn: Enable cpu-idle driver Date: Tue, 10 Sep 2019 11:25:18 -0400 Message-Id: <1568129118-31114-2-git-send-email-Anson.Huang@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1568129118-31114-1-git-send-email-Anson.Huang@nxp.com> References: <1568129118-31114-1-git-send-email-Anson.Huang@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190909_202639_574385_6A0C9535 X-CRM114-Status: UNSURE ( 6.87 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [92.121.34.13 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 DATE_IN_FUTURE_06_12 Date: is 6 to 12 hours after Received: date X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Linux-imx@nxp.com MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Enable i.MX8MN cpu-idle using generic ARM cpu-idle driver, 2 states are supported, details as below: root@imx8mnevk:~# cat /sys/devices/system/cpu/cpu0/cpuidle/state0/name WFI root@imx8mnevk:~# cat /sys/devices/system/cpu/cpu0/cpuidle/state0/usage 3098 root@imx8mnevk:~# cat /sys/devices/system/cpu/cpu0/cpuidle/state1/name cpu-pd-wait root@imx8mnevk:~# cat /sys/devices/system/cpu/cpu0/cpuidle/state1/usage 3078 Signed-off-by: Anson Huang --- arch/arm64/boot/dts/freescale/imx8mn.dtsi | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mn.dtsi b/arch/arm64/boot/dts/freescale/imx8mn.dtsi index 0166f8c..e4efe8d 100644 --- a/arch/arm64/boot/dts/freescale/imx8mn.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mn.dtsi @@ -43,6 +43,19 @@ #address-cells = <1>; #size-cells = <0>; + idle-states { + entry-method = "psci"; + + cpu_pd_wait: cpu-pd-wait { + compatible = "arm,idle-state"; + arm,psci-suspend-param = <0x0010033>; + local-timer-stop; + entry-latency-us = <1000>; + exit-latency-us = <700>; + min-residency-us = <2700>; + }; + }; + A53_0: cpu@0 { device_type = "cpu"; compatible = "arm,cortex-a53"; @@ -54,6 +67,7 @@ operating-points-v2 = <&a53_opp_table>; nvmem-cells = <&cpu_speed_grade>; nvmem-cell-names = "speed_grade"; + cpu-idle-states = <&cpu_pd_wait>; }; A53_1: cpu@1 { @@ -65,6 +79,7 @@ enable-method = "psci"; next-level-cache = <&A53_L2>; operating-points-v2 = <&a53_opp_table>; + cpu-idle-states = <&cpu_pd_wait>; }; A53_2: cpu@2 { @@ -76,6 +91,7 @@ enable-method = "psci"; next-level-cache = <&A53_L2>; operating-points-v2 = <&a53_opp_table>; + cpu-idle-states = <&cpu_pd_wait>; }; A53_3: cpu@3 { @@ -87,6 +103,7 @@ enable-method = "psci"; next-level-cache = <&A53_L2>; operating-points-v2 = <&a53_opp_table>; + cpu-idle-states = <&cpu_pd_wait>; }; A53_L2: l2-cache0 {