From patchwork Mon Jul 8 07:46:24 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anson Huang X-Patchwork-Id: 11034713 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 23BD213BD for ; Mon, 8 Jul 2019 07:55:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 12DC8237F1 for ; Mon, 8 Jul 2019 07:55:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 02C0E26E16; Mon, 8 Jul 2019 07:55:41 +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=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 97A4A237F1 for ; Mon, 8 Jul 2019 07:55:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725886AbfGHHzk (ORCPT ); Mon, 8 Jul 2019 03:55:40 -0400 Received: from inva020.nxp.com ([92.121.34.13]:47222 "EHLO inva020.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725836AbfGHHzk (ORCPT ); Mon, 8 Jul 2019 03:55:40 -0400 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 66E7E1A0136; Mon, 8 Jul 2019 09:55:39 +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 223641A0238; Mon, 8 Jul 2019 09:55:34 +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 6C55B402DB; Mon, 8 Jul 2019 15:55:27 +0800 (SGT) From: Anson.Huang@nxp.com To: rjw@rjwysocki.net, viresh.kumar@linaro.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Linux-imx@nxp.com Subject: [PATCH] cpufreq: imx-cpufreq-dt: Assign max supported frequency as suspend frequency Date: Mon, 8 Jul 2019 15:46:24 +0800 Message-Id: <20190708074624.910-1-Anson.Huang@nxp.com> X-Mailer: git-send-email 2.14.1 X-Virus-Scanned: ClamAV using ClamSMTP Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Anson Huang To reduce the suspend/resume latency, CPU's max supported frequency should be used during low level suspend/resume phase, "opp-suspend" property is NOT feasible since OPP defined in DT could be NOT supported according to speed garding and market segment fuse settings. So we can assign the cpufreq policy's suspend_freq with max available frequency provided by cpufreq driver. Signed-off-by: Anson Huang --- drivers/cpufreq/imx-cpufreq-dt.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/cpufreq/imx-cpufreq-dt.c b/drivers/cpufreq/imx-cpufreq-dt.c index 4f85f31..b6607e8 100644 --- a/drivers/cpufreq/imx-cpufreq-dt.c +++ b/drivers/cpufreq/imx-cpufreq-dt.c @@ -4,6 +4,7 @@ */ #include +#include #include #include #include @@ -84,6 +85,16 @@ static int imx_cpufreq_dt_remove(struct platform_device *pdev) return 0; } +static int __init imx_cpufreq_dt_setup_suspend_opp(void) +{ + struct cpufreq_policy *policy = cpufreq_cpu_get(0); + + policy->suspend_freq = cpufreq_quick_get_max(0); + + return 0; +} +late_initcall(imx_cpufreq_dt_setup_suspend_opp); + static struct platform_driver imx_cpufreq_dt_driver = { .probe = imx_cpufreq_dt_probe, .remove = imx_cpufreq_dt_remove,