From patchwork Fri Aug 16 10:13:03 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anson Huang X-Patchwork-Id: 11097471 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DA9461399 for ; Fri, 16 Aug 2019 10:31:46 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C097B28988 for ; Fri, 16 Aug 2019 10:31:46 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B36EA2898D; Fri, 16 Aug 2019 10:31:46 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 9C3DD28988 for ; Fri, 16 Aug 2019 10:31:42 +0000 (UTC) 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: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:In-Reply-To: References:List-Owner; bh=o76Bd6lpGuB3TTaQ/dr4cjGv8PSZRDRY3ctz1wsOS9w=; b=dci jCEaOuwOFXOFGB6UO77w5aOvUQSqBYIFoHRJDP2uyNjWEj8npCIK+K9JTeZvZYrPvHD5ueH+bzwAj D2mykv8NPphZmxL5N3P8mJcrE4Ro3XYAOQMf96+J77R5/5wOLQBTDLFhleQCASuw72p1uBhIYKsfj Yxj14PRru1/sVCARKYp5EhKVL3tSCVQuWzfUGhg2s5JSYJ7mbiy1Pn0shGwki+rVzWvNtB9UMT5AM 27vpMWniRlX1qIZ9B+OPIas5BzJLaXzIFtVnvJhm5a2EIyzWMmMEw6FM5Gb43vUzX8ESLcExvyB/7 Hlrd4vjXvzurQ9HLWG6Y5Ss5GXCOsUA==; 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 1hyZWH-00077a-5Y; Fri, 16 Aug 2019 10:31:41 +0000 Received: from inva020.nxp.com ([92.121.34.13]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hyZWD-00076p-OQ for linux-arm-kernel@lists.infradead.org; Fri, 16 Aug 2019 10:31:39 +0000 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id C62F51A003D; Fri, 16 Aug 2019 12:31:33 +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 B07A51A0027; Fri, 16 Aug 2019 12:31:26 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id D05F940293; Fri, 16 Aug 2019 18:31:17 +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, Anson.Huang@nxp.com, leonard.crestez@nxp.com, abel.vesa@nxp.com, ping.bai@nxp.com, jun.li@nxp.com, daniel.baluta@nxp.com, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH] arm64: dts: imx8mm: Enable cpu-idle driver Date: Fri, 16 Aug 2019 06:13:03 -0400 Message-Id: <1565950383-589-1-git-send-email-Anson.Huang@nxp.com> X-Mailer: git-send-email 2.7.4 X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190816_033137_937458_F22CA194 X-CRM114-Status: UNSURE ( 5.91 ) X-CRM114-Notice: Please train this message. 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 X-Virus-Scanned: ClamAV using ClamSMTP 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-pd-wait root@imx8mmevk:~# cat /sys/devices/system/cpu/cpu0/cpuidle/state1/usage 6647 Signed-off-by: Anson Huang Acked-by: Daniel Lezcano --- arch/arm64/boot/dts/freescale/imx8mm.dtsi | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi index e8560d1..984ea7b 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi @@ -44,6 +44,19 @@ #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"; @@ -55,6 +68,7 @@ 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 { @@ -66,6 +80,7 @@ enable-method = "psci"; next-level-cache = <&A53_L2>; operating-points-v2 = <&a53_opp_table>; + cpu-idle-states = <&cpu_pd_wait>; }; A53_2: cpu@2 { @@ -77,6 +92,7 @@ enable-method = "psci"; next-level-cache = <&A53_L2>; operating-points-v2 = <&a53_opp_table>; + cpu-idle-states = <&cpu_pd_wait>; }; A53_3: cpu@3 { @@ -88,6 +104,7 @@ enable-method = "psci"; next-level-cache = <&A53_L2>; operating-points-v2 = <&a53_opp_table>; + cpu-idle-states = <&cpu_pd_wait>; }; A53_L2: l2-cache0 {