From patchwork Sun Jul 7 22:33:02 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 1128735 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-tegra-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="Dj4CGCsL"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 45hk240XbRz9sPQ for ; Mon, 8 Jul 2019 08:35:56 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728523AbfGGWfy (ORCPT ); Sun, 7 Jul 2019 18:35:54 -0400 Received: from mail-qk1-f194.google.com ([209.85.222.194]:46997 "EHLO mail-qk1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727825AbfGGWfy (ORCPT ); Sun, 7 Jul 2019 18:35:54 -0400 Received: by mail-qk1-f194.google.com with SMTP id r4so11824295qkm.13; Sun, 07 Jul 2019 15:35:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=zYZMMVB0p2vPiUsxM7xlHTtkTuiIoBu14nXRTurteBU=; b=Dj4CGCsLeD650+nQjlgz0ZPQ5dExQ8Y7KAzdCDqRn6gSOx13yKk38EsvVTOmSdzwf9 ADoBTzdFe5PvByqJbzwar5z/iqq+GVOdgHNzzFB484qcmzc2paK5RgxutdQwOINylWYG +1cHnYwVjE6SHvmVNccFq6D/Spsu0v5C0NsdiEA0CHKm2TonQ9tWPh1GnD40qYcpzPYO fX4qC/8a44mmutcbTp2FxFukGy9wW4leBJZyiuZHa+ToKoYfLo036xIT99c6KiiV809B ZTBPC+lVNaVi8VoRW1hmqFr6pvaO69ho18NRJswDulJ05Wdj5wf6yEMBnhB1DGImFwBx ucvA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=zYZMMVB0p2vPiUsxM7xlHTtkTuiIoBu14nXRTurteBU=; b=Kv2dwXCE95yFVsqXiTErkLkkKrD893J3RrxyWDZCricqer/y+nKTu4rJnGduveJP+f pS2IwK2KHuChfLX7QbaC8Uw5YfJpnrMmyshK81v68Lj27ILbNgHlMPcjyuL/dbFEeO1V UMBGPziYt5+BSR66uLOeWxYHaf0GzSAuiXyT8gRi8FtYgDIZYOhStGEoJRAhDmYtGo2a 7FAq33D4nNEtNZ1azffsOi8KCzLdDKZEE5Pan5Yi0379VbMCESuACq2F/hCuJIZ0rL2y JgXSIb/qSna+ZUN0ptvax5xZdHgv6t5DXKOztrnC47Bo7RgjD/3u0/Vm5lfs5lRs/qHp x3EA== X-Gm-Message-State: APjAAAUe2+GY2/to0NvoTkWDPpGx2ef1HlMbLyTPN/4XDMWeY/gSmU6W HLI0+27R/W7RPaz4Cc1wLCI= X-Google-Smtp-Source: APXvYqyntEvL8BaKmjjASARnHCPbkwUcYPtDsaVd6FdncEMzylJMgU9a9OfY9U2aBIv0HlJXjGx5bA== X-Received: by 2002:ae9:e64d:: with SMTP id x13mr11143733qkl.445.1562538953226; Sun, 07 Jul 2019 15:35:53 -0700 (PDT) Received: from localhost.localdomain (ppp79-139-233-208.pppoe.spdop.ru. [79.139.233.208]) by smtp.gmail.com with ESMTPSA id p4sm6998453qkb.84.2019.07.07.15.35.51 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 07 Jul 2019 15:35:52 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , MyungJoo Ham , Kyungmin Park , Chanwoo Choi , Jonathan Hunter , Tomeu Vizoso Cc: linux-pm@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 23/24] PM / devfreq: tegra30: Increase sampling period to 16ms Date: Mon, 8 Jul 2019 01:33:02 +0300 Message-Id: <20190707223303.6755-24-digetx@gmail.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190707223303.6755-1-digetx@gmail.com> References: <20190707223303.6755-1-digetx@gmail.com> MIME-Version: 1.0 Sender: linux-tegra-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org Increase sampling period by 4ms to get a nicer pow2 value, converting diving into shifts in the code. That's more preferable for Tegra30 that doesn't have hardware divider instructions because of older Cortex-A9 CPU. In a result boosting events are delayed by 4ms, which is not sensible in practice at all. Signed-off-by: Dmitry Osipenko Reviewed-by: Chanwoo Choi --- drivers/devfreq/tegra30-devfreq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/devfreq/tegra30-devfreq.c b/drivers/devfreq/tegra30-devfreq.c index 19e872a64148..bde19b758643 100644 --- a/drivers/devfreq/tegra30-devfreq.c +++ b/drivers/devfreq/tegra30-devfreq.c @@ -71,7 +71,7 @@ * translates to 2 ^ (K_VAL + 1). ex: 2 ^ (6 + 1) = 128 */ #define ACTMON_AVERAGE_WINDOW_LOG2 6 -#define ACTMON_SAMPLING_PERIOD 12 /* ms */ +#define ACTMON_SAMPLING_PERIOD 16 /* ms */ #define KHZ 1000