From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 361DCC73C75 for ; Wed, 10 Jul 2019 06:40:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 158C820838 for ; Wed, 10 Jul 2019 06:40:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727196AbfGJGkh (ORCPT ); Wed, 10 Jul 2019 02:40:37 -0400 Received: from inva020.nxp.com ([92.121.34.13]:57974 "EHLO inva020.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727142AbfGJGkd (ORCPT ); Wed, 10 Jul 2019 02:40:33 -0400 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 6D09E1A0147; Wed, 10 Jul 2019 08:40:31 +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 2D4A51A00BC; Wed, 10 Jul 2019 08:40:18 +0200 (CEST) Received: from titan.ap.freescale.net (TITAN.ap.freescale.net [10.192.208.233]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id DFA614031C; Wed, 10 Jul 2019 14:40:04 +0800 (SGT) From: Anson.Huang@nxp.com To: catalin.marinas@arm.com, will@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, daniel.lezcano@linaro.org, tglx@linutronix.de, leonard.crestez@nxp.com, aisheng.dong@nxp.com, daniel.baluta@nxp.com, ping.bai@nxp.com, l.stach@pengutronix.de, abel.vesa@nxp.com, andrew.smirnov@gmail.com, ccaione@baylibre.com, angus@akkea.ca, agx@sigxcpu.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org Cc: Linux-imx@nxp.com Subject: [PATCH V5 5/5] arm64: dts: imx8mm: Enable cpu-idle driver Date: Wed, 10 Jul 2019 14:30:56 +0800 Message-Id: <20190710063056.35689-5-Anson.Huang@nxp.com> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20190710063056.35689-1-Anson.Huang@nxp.com> References: <20190710063056.35689-1-Anson.Huang@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Anson Huang Enable i.MX8MM cpu-idle using generic ARM cpu-idle driver, 2 states are supported, details as below: root@imx8mmevk:~# cat /sys/devices/system/cpu/cpu0/cpuidle/state0/name WFI root@imx8mmevk:~# cat /sys/devices/system/cpu/cpu0/cpuidle/state0/usage 3973 root@imx8mmevk:~# cat /sys/devices/system/cpu/cpu0/cpuidle/state1/name cpu-sleep-wait root@imx8mmevk:~# cat /sys/devices/system/cpu/cpu0/cpuidle/state1/usage 6647 Signed-off-by: Anson Huang --- New patch, as this patch is based on other patches in this series, so I include it. --- arch/arm64/boot/dts/freescale/imx8mm.dtsi | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi index 8cf7f34..8f3ed39 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi @@ -44,6 +44,20 @@ #address-cells = <1>; #size-cells = <0>; + idle-states { + entry-method = "psci"; + + cpu_sleep_wait: cpu-sleep-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>; + wakeup-latency-us = <1500>; + }; + }; + A53_0: cpu@0 { device_type = "cpu"; compatible = "arm,cortex-a53"; @@ -56,6 +70,7 @@ nvmem-cells = <&cpu_speed_grade>; nvmem-cell-names = "speed_grade"; #cooling-cells = <2>; + cpu-idle-states = <&cpu_sleep_wait>; }; A53_1: cpu@1 { @@ -68,6 +83,7 @@ next-level-cache = <&A53_L2>; operating-points-v2 = <&a53_opp_table>; #cooling-cells = <2>; + cpu-idle-states = <&cpu_sleep_wait>; }; A53_2: cpu@2 { @@ -80,6 +96,7 @@ next-level-cache = <&A53_L2>; operating-points-v2 = <&a53_opp_table>; #cooling-cells = <2>; + cpu-idle-states = <&cpu_sleep_wait>; }; A53_3: cpu@3 { @@ -92,6 +109,7 @@ next-level-cache = <&A53_L2>; operating-points-v2 = <&a53_opp_table>; #cooling-cells = <2>; + cpu-idle-states = <&cpu_sleep_wait>; }; A53_L2: l2-cache0 { -- 2.7.4