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=-5.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable 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 B7A3AC32750 for ; Fri, 2 Aug 2019 03:42:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8FD9A2086A for ; Fri, 2 Aug 2019 03:42:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="PLmzt1p7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730592AbfHBDmE (ORCPT ); Thu, 1 Aug 2019 23:42:04 -0400 Received: from mail-pl1-f195.google.com ([209.85.214.195]:36340 "EHLO mail-pl1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730557AbfHBDmD (ORCPT ); Thu, 1 Aug 2019 23:42:03 -0400 Received: by mail-pl1-f195.google.com with SMTP id k8so33108215plt.3 for ; Thu, 01 Aug 2019 20:42:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=Oljc8WAekrnZTIcu4hWL7c8be+0/DK6ZEkq8nHr7SeE=; b=PLmzt1p7LCED+jRBIlbDHX2FR3TASeXk1LneXvX5L+v3ckSfIU76VgWFwNGv2IpIAP ZRlgpbPFzbHANRXyVseRekP81v3K6DUqEKMdNYuBVOMjnrGTnR3ktAM7ygte6snUvMAA ajMQSunCoZAvG2PYzD3YcKosAos6VC+nxjDS8Sc5f2PoOnpU6yVQchpP4oDxMzkJg89E WK28bQ4vWevF9rCGQsq9Hq1Du24h7Djd0ebxRhT0lTfZOKdZl9XFQYrxi7UfRfimEyxx mT6Qa+ZLK1+vg/B72q+E3XuOpqmjJd+VbAwc5GKeCj2gdmhbATmLQ6pWhsN0XDgfYUvL LNNg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=Oljc8WAekrnZTIcu4hWL7c8be+0/DK6ZEkq8nHr7SeE=; b=gz8JS8ow0r9XZOsyz0DBqbDakbyNpidBOUY3zWI7F23jeMz/bc6m4u8N5SsUa2jZPt JiZUKgqzG7B2tGkXwlQDQJ5255VnrCo5mmK/eQtSv6yTKzaCs5+MnlSlIFIUobvEm9Cg 0tY8GsmZHvrr6sObDLN1X4ZmcSIleppdX6lzmMedTFGnIBNo52Vbx/F18X6/PVVqEMAV 7cb4GjNwOiEBx3kqARPsJqhF7SJYEWmgXy75MN1L1wGUMYNCYlt9ns+jH8mMDWcgi3Nj A2YtFGYST+/bwFnwTivNWMjoNLKI1S+Lv+EP1gQJN7p63rvp+47eq6EBBdXt7croNTGM PFHA== X-Gm-Message-State: APjAAAUNc7v45eQei0huk7nCrz0xyyveCrIYauuw7RvmAL2NJF0zFu6s 3f3uh3XYxIuQAF62XXvlfvgAfQ== X-Google-Smtp-Source: APXvYqxkFHPbNbT09CdGUOr+LbVd9UcCOOrWPDNAK31ZrN4/1fb5cBrqjBPqkpBxHYaWNbDRL8CdcQ== X-Received: by 2002:a17:902:9041:: with SMTP id w1mr15711312plz.132.1564717322425; Thu, 01 Aug 2019 20:42:02 -0700 (PDT) Received: from localhost ([122.172.28.117]) by smtp.gmail.com with ESMTPSA id q198sm76984199pfq.155.2019.08.01.20.42.00 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 01 Aug 2019 20:42:00 -0700 (PDT) Date: Fri, 2 Aug 2019 09:11:58 +0530 From: Viresh Kumar To: Sowjanya Komatineni Cc: thierry.reding@gmail.com, jonathanh@nvidia.com, tglx@linutronix.de, jason@lakedaemon.net, marc.zyngier@arm.com, linus.walleij@linaro.org, stefan@agner.ch, mark.rutland@arm.com, pdeschrijver@nvidia.com, pgaikwad@nvidia.com, sboyd@kernel.org, linux-clk@vger.kernel.org, linux-gpio@vger.kernel.org, jckuo@nvidia.com, josephl@nvidia.com, talho@nvidia.com, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, mperttunen@nvidia.com, spatra@nvidia.com, robh+dt@kernel.org, digetx@gmail.com, devicetree@vger.kernel.org, rjw@rjwysocki.net, linux-pm@vger.kernel.org Subject: Re: [PATCH v7 11/20] cpufreq: tegra124: Add suspend and resume support Message-ID: <20190802034158.gcb7o3o23fe5wtsz@vireshk-i7> References: <1564607463-28802-1-git-send-email-skomatineni@nvidia.com> <1564607463-28802-12-git-send-email-skomatineni@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1564607463-28802-12-git-send-email-skomatineni@nvidia.com> User-Agent: NeoMutt/20180716-391-311a52 Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org On 31-07-19, 14:10, Sowjanya Komatineni wrote: > This patch adds suspend and resume pm ops for cpufreq driver. > > PLLP is the safe clock source for CPU during system suspend and > resume as PLLP rate is below the CPU Fmax at Vmin. > > CPUFreq driver suspend switches the CPU clock source to PLLP and > disables the DFLL clock. > > During system resume, warmboot code powers up the CPU with PLLP > clock source. So CPUFreq driver resume enabled DFLL clock and > switches CPU back to DFLL clock source. > > Signed-off-by: Sowjanya Komatineni > --- > drivers/cpufreq/tegra124-cpufreq.c | 60 ++++++++++++++++++++++++++++++++++++++ > 1 file changed, 60 insertions(+) Acked-by: Viresh Kumar -- viresh