From patchwork Sun Jun 16 23:35:49 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 1116668 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="o4XbwT/z"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 45RrMR5PrPz9sDX for ; Mon, 17 Jun 2019 09:36:19 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727547AbfFPXgR (ORCPT ); Sun, 16 Jun 2019 19:36:17 -0400 Received: from mail-lj1-f195.google.com ([209.85.208.195]:43700 "EHLO mail-lj1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727538AbfFPXgQ (ORCPT ); Sun, 16 Jun 2019 19:36:16 -0400 Received: by mail-lj1-f195.google.com with SMTP id 16so7467761ljv.10; Sun, 16 Jun 2019 16:36:14 -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=t2V7RCk27WCmUusM85nZL0QgT3ShS/tiovCYzrgWfsY=; b=o4XbwT/zpwZwYLrQ4m8YDgj621PjLQfcjEol41vgybx8ypDk40VFypufhxsC/bgDRi ogWG90ShNvIF9kvf/1zS256dZjMc78CjxsD+BlzXdPVC95eS5tHjOrUkfEOZYGznxPpK KIJOUYY8J3nAWTpr6Dp9QFu+bMZOTgNM+TwkCzYWkkdROqor/yEMOQw3RtYLpmAm5ht2 FhgUt71iu/G0jWWB5IjjOzT6GiBZQO36sve+4kIP1HybGAMpd9bau40ruS1EnY9aAgRG r37zepZlaXLrxv/t2SgpiMLdxl0MGntkzYIvPfW5+XVdfi0/Lek084GFXE0JIbPVChRb SVNw== 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=t2V7RCk27WCmUusM85nZL0QgT3ShS/tiovCYzrgWfsY=; b=PGyY2etGVcr9W4JM0Jf/5Tvpgv6zwXqM+cm5ax+99ZgoywnZikNMaz+EQE62He6x27 4OYkq7MWAydwbeMkr/H6gdDZCnbHvRq2itdY+J65ds6SdUaxWHN0kPGsJk8LGzY4H7rA TfiMhd7IW1vAA7UTy0Mi5xknYLYp0BJntGjq1kNHST/+bYWBdVl9CxReDokFbdcGdQVH 5MdbsjGD4hoC0zNZIEhXNA6VxCI7wFf2AnYkWN8mu8paWHqoU3Ei2R6/4I2YBVlYETuU Lya73C6wgeoLSGVqZLbSSvGzch/eQGAeQ+uol+x+tJ5NexSWQLriH5xMUKMPG+8TfNus UwMw== X-Gm-Message-State: APjAAAXWXckgHnIllcU1Dq/n0dvWd8Wxvo+V8ruBb9rfKgQ/UR3YxmdA 0YE725kqGB9IuEcebsXMZ+E= X-Google-Smtp-Source: APXvYqwOcczRwLkBHBL5rDESBQ+g3ZJMJA4SKCrxSh6v46W43ahnBQFMHehiS8PlLWBeH+RWY/X46Q== X-Received: by 2002:a2e:9cd4:: with SMTP id g20mr6704131ljj.205.1560728174046; Sun, 16 Jun 2019 16:36:14 -0700 (PDT) Received: from localhost.localdomain (ppp91-79-162-197.pppoe.mtu-net.ru. [91.79.162.197]) by smtp.gmail.com with ESMTPSA id q4sm2008377lje.99.2019.06.16.16.36.12 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 16 Jun 2019 16:36:13 -0700 (PDT) From: Dmitry Osipenko To: Rob Herring , Michael Turquette , Joseph Lo , Thierry Reding , Jonathan Hunter , Peter De Schrijver , Prashant Gaikwad , Stephen Boyd Cc: devicetree@vger.kernel.org, linux-clk@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 08/10] memory: tegra: Ensure timing control debug features are disabled Date: Mon, 17 Jun 2019 02:35:49 +0300 Message-Id: <20190616233551.6838-9-digetx@gmail.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190616233551.6838-1-digetx@gmail.com> References: <20190616233551.6838-1-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 Timing control debug features should be disabled at a boot time, but you never now and hence it's better to disable them explicitly because some of those features are crucial for the driver to do a proper thing. Signed-off-by: Dmitry Osipenko --- drivers/memory/tegra/mc.c | 3 +++ drivers/memory/tegra/mc.h | 2 ++ 2 files changed, 5 insertions(+) diff --git a/drivers/memory/tegra/mc.c b/drivers/memory/tegra/mc.c index eaebe371625c..4c1492c653e1 100644 --- a/drivers/memory/tegra/mc.c +++ b/drivers/memory/tegra/mc.c @@ -660,6 +660,9 @@ static int tegra_mc_probe(struct platform_device *pdev) } else #endif { + /* ensure that debug features are disabled */ + mc_writel(mc, 0x00000000, MC_TIMING_CONTROL_DBG); + err = tegra_mc_setup_latency_allowance(mc); if (err < 0) { dev_err(&pdev->dev, diff --git a/drivers/memory/tegra/mc.h b/drivers/memory/tegra/mc.h index 0720a1d2023e..abc565b42225 100644 --- a/drivers/memory/tegra/mc.h +++ b/drivers/memory/tegra/mc.h @@ -33,6 +33,8 @@ #define MC_EMEM_ARB_OVERRIDE 0xe8 #define MC_EMEM_ARB_OVERRIDE_EACK_MASK 0x3 +#define MC_TIMING_CONTROL_DBG 0xf8 + #define MC_TIMING_CONTROL 0xfc #define MC_TIMING_UPDATE BIT(0)