From patchwork Fri May 24 15:32:48 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 1104974 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="M8SbDGA6"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 459Vp12ztTz9s4V for ; Sat, 25 May 2019 01:36:09 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390483AbfEXPgE (ORCPT ); Fri, 24 May 2019 11:36:04 -0400 Received: from mail-lj1-f196.google.com ([209.85.208.196]:42620 "EHLO mail-lj1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389812AbfEXPfb (ORCPT ); Fri, 24 May 2019 11:35:31 -0400 Received: by mail-lj1-f196.google.com with SMTP id 188so9022869ljf.9; Fri, 24 May 2019 08:35:29 -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=ETNkw8fFUbaK1GsH9w3HEMnksKyWiZUE22AHo7ajX+U=; b=M8SbDGA6wwIJlmM9rMvcJz72o9PQH/mhr5Xd3uiGXyBk3T8rXuFqMzmQd1cUm4L7uz O8g0B/IKq/fbBcj9Op6t9h+Tj3P/7f4l6s6Y/kykIekuFqFQtzCpZykezYT+pHepTeZ+ bOheDeNGW9I5ivbvwtIYGTSNsIEoykhfE8kH3oCAVtF0m52WEiUVbZUimsetAKMRiu41 Yn9IKtQeZbrDv1lK3RNuw/zCVfaCb9hAHINcnIo1j+Vl4QIor3zjvJqHUGR0w6t7dtT7 KgESQJZpOY6LOO+cey8d9kQtcIcMGebmgB/gZHKp5P14yD7S0JOPGK5uKkC8FSHbvy8Z qWRQ== 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=ETNkw8fFUbaK1GsH9w3HEMnksKyWiZUE22AHo7ajX+U=; b=RH4OTt3/intpEDRm7LZoGxTFXmcnVjyFz9kg/ERmQBX9w9hWj6rQ1gPUzYzpo9L2XO aPlbdXQUH+R7W6X28BDGhbRmxgwRgSeM3+xH7SkTSGU4v/V4MA8OvskdBg2uZ0xMGxOC V36nC71iRrGJDNKTwLdrf3qI9NBhB/7eL8nfx9cnMDEU46lVjVyBz7W1TewfeseXv/aq zJ4pnkGILkXqMP7sfRbKM9aLI19+gjYjPevTCUlf2REnZqK1xNKWmcadtXMcC6Cg2YuR 7ORblUqmwPpyes1XlMS33SWmHnjVScPedppr0oM3wrTJweu9EdmZohVAC5O0mMsPvvWU ni1w== X-Gm-Message-State: APjAAAXEfcJtqcZt8cWQeIubULOnP0GxBjMpGBF5m+gh+WLtfNv6Jwpn +6fyEUsgsCgcqgpSccrdZ+w= X-Google-Smtp-Source: APXvYqwgYtRJtqCKzf13z18XN4hNoPCaa7YIbnQ6b4deXZBTzTVZx5mLqsRee1lTE/FHhnhA6jXSRg== X-Received: by 2002:a2e:b0d0:: with SMTP id g16mr27106796ljl.132.1558712129183; Fri, 24 May 2019 08:35:29 -0700 (PDT) Received: from localhost.localdomain ([94.29.35.141]) by smtp.gmail.com with ESMTPSA id y14sm572316ljh.60.2019.05.24.08.35.28 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 24 May 2019 08:35:28 -0700 (PDT) From: Dmitry Osipenko To: Daniel Lezcano , Thomas Gleixner , Joseph Lo , Thierry Reding , Jonathan Hunter , Peter De Schrijver Cc: linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, Nicolas Chauvet Subject: [PATCH v3 3/8] clocksource/drivers/tegra: Reset hardware state on init Date: Fri, 24 May 2019 18:32:48 +0300 Message-Id: <20190524153253.28564-4-digetx@gmail.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190524153253.28564-1-digetx@gmail.com> References: <20190524153253.28564-1-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 Reset timer's hardware state to ensure that initially it is in a predictable state. Signed-off-by: Dmitry Osipenko --- drivers/clocksource/timer-tegra20.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/clocksource/timer-tegra20.c b/drivers/clocksource/timer-tegra20.c index 57e7aa2b80a3..739f83fdb318 100644 --- a/drivers/clocksource/timer-tegra20.c +++ b/drivers/clocksource/timer-tegra20.c @@ -132,6 +132,9 @@ static int tegra_timer_setup(unsigned int cpu) { struct timer_of *to = per_cpu_ptr(&tegra_to, cpu); + writel(0, timer_of_base(to) + TIMER_PTV); + writel(TIMER_PCR_INTR_CLR, timer_of_base(to) + TIMER_PCR); + irq_force_affinity(to->clkevt.irq, cpumask_of(cpu)); enable_irq(to->clkevt.irq);