From patchwork Mon Sep 26 09:49:06 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prathamesh Shete X-Patchwork-Id: 12988500 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4B2F8C32771 for ; Mon, 26 Sep 2022 09:50:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234249AbiIZJuH (ORCPT ); Mon, 26 Sep 2022 05:50:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60430 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233625AbiIZJtx (ORCPT ); Mon, 26 Sep 2022 05:49:53 -0400 Received: from NAM04-BN8-obe.outbound.protection.outlook.com (mail-bn8nam04on2069.outbound.protection.outlook.com [40.107.100.69]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 38078A199; Mon, 26 Sep 2022 02:49:52 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=TlNivb4H0huDNEL9k887ukI8+nXdBOOFKi7DbT+Jh9ruiPK1u4M4t+htMkLtAJ4A6FVUaa7vxBF6rdFvTV3GHII5Mw0HEZ2l2S12z/45/8c/BOCJuR3h6tVw2OVYc1nrD3tURRoC8atjExDfnPHYB3E5T0XPlZaYy4BaM7QpyHtqC7kpE972jTXA4BFcpmgRNtIA2+tE+kVRBCizbufOYOZPh2T0ae1o5YN+KC2bPx/RLvOkZsi/ozSzUE+ATQDF+SuNSCMo4ilRuIAuyvwyIPQgvjWutrs877cwCMQUDLJWhvr4AIi1UCXlskg4HokOGhpugKe+KlvsMDkg+B0PNQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=hrcKnIJPvv0HyKJzj4fq1Gvd+67OqFC7mDjvryyWuhY=; b=PYROytd7mZgC1a9gH2vaBrxtLW4oI5v40y7iBKERpDvtvUIAdeKEQnwTt9bQjYU4EpUSK4vv+FvdfY3QLmwGHpvCPklim395y0WgT9oPQMqMOAz4+7A/ctjkQt0P6J8EFhOS5rjje5tWDkJ4x08LsVL8R5OWjqP6CTpdsHwEXXFM1Ggk9Ge6cbUoV2ALSe+L08jqztRAdOaLytJb94Fl5ZPb5omZZnnGq/RN2kZ+jLIBU6T5HdCLRsaoqMVVmxFsDR3IQrun6nHnPqcV6yWL5/hpt9MqeKL1uUVGhS/jO+UpsEzaYw9P4i7lAVKTTu62xyxGWAIwy7MChdsQrkxx7w== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 216.228.117.160) smtp.rcpttodomain=intel.com smtp.mailfrom=nvidia.com; dmarc=pass (p=reject sp=reject pct=100) action=none header.from=nvidia.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=hrcKnIJPvv0HyKJzj4fq1Gvd+67OqFC7mDjvryyWuhY=; b=k3p3HZnYkkRaytdc3yoY2MbU+/iM9x7rPLspIr6mr6C3GYqCg3ZiPBmjMnROYlZZh2mbVkuuwdRWUfLzoItbFBs1WSiefywOAF2WXABjkGCBuDzGj4DyeAW8WmgIukMusbTZPjnD/VM/DoxW2rb+RDOxujJbvRlP79Jf4r6hED9kB+OZwTD2OOohp40KOJ0HdTyfNRr0T/IbJi4AsEuIUfZ2yENEPTxgPLb0GMtlgvk9aQ5DQhvP5dSsy7PKhIg+c5Bubdy7pU9PTRum5aaeNNBKBIrGrWIpXA009bmNeSUcvW26W9QauIyarCt6rN8np5NpoDhr6+dRc4xyDy95IA== Received: from BN9P222CA0012.NAMP222.PROD.OUTLOOK.COM (2603:10b6:408:10c::17) by CH0PR12MB5282.namprd12.prod.outlook.com (2603:10b6:610:d5::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5654.25; Mon, 26 Sep 2022 09:49:50 +0000 Received: from BN8NAM11FT074.eop-nam11.prod.protection.outlook.com (2603:10b6:408:10c:cafe::b3) by BN9P222CA0012.outlook.office365.com (2603:10b6:408:10c::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5654.17 via Frontend Transport; Mon, 26 Sep 2022 09:49:50 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 216.228.117.160) smtp.mailfrom=nvidia.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 216.228.117.160 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.117.160; helo=mail.nvidia.com; pr=C Received: from mail.nvidia.com (216.228.117.160) by BN8NAM11FT074.mail.protection.outlook.com (10.13.176.154) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5654.14 via Frontend Transport; Mon, 26 Sep 2022 09:49:50 +0000 Received: from rnnvmail202.nvidia.com (10.129.68.7) by mail.nvidia.com (10.129.200.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.26; Mon, 26 Sep 2022 02:49:35 -0700 Received: from rnnvmail203.nvidia.com (10.129.68.9) by rnnvmail202.nvidia.com (10.129.68.7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.29; Mon, 26 Sep 2022 02:49:34 -0700 Received: from pshete-ubuntu.nvidia.com (10.127.8.14) by mail.nvidia.com (10.129.68.9) with Microsoft SMTP Server id 15.2.986.29 via Frontend Transport; Mon, 26 Sep 2022 02:49:31 -0700 From: Prathamesh Shete To: , , , , , , , CC: , , , Subject: [PATCH v3 4/4] mmc: sdhci-tegra: Use actual clock rate for SW tuning correction Date: Mon, 26 Sep 2022 15:19:06 +0530 Message-ID: <20220926094906.14537-4-pshete@nvidia.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220926094906.14537-1-pshete@nvidia.com> References: <20220926094906.14537-1-pshete@nvidia.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT074:EE_|CH0PR12MB5282:EE_ X-MS-Office365-Filtering-Correlation-Id: 18acefec-5c8e-4605-8092-08da9fa4745d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.160;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge1.nvidia.com;CAT:NONE;SFS:(13230022)(4636009)(396003)(39860400002)(376002)(136003)(346002)(451199015)(40470700004)(46966006)(36840700001)(82740400003)(86362001)(7636003)(36756003)(356005)(36860700001)(2906002)(336012)(1076003)(186003)(2616005)(40460700003)(82310400005)(5660300002)(40480700001)(107886003)(6666004)(41300700001)(478600001)(7696005)(47076005)(26005)(426003)(83380400001)(316002)(110136005)(54906003)(8676002)(4326008)(70586007)(70206006)(8936002);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Sep 2022 09:49:50.0053 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 18acefec-5c8e-4605-8092-08da9fa4745d X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT074.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR12MB5282 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org Ensure tegra_host member "curr_clk_rate" holds the actual clock rate instead of requested clock rate for proper use during tuning correction algorithm. Actual clk rate may not be the same as the requested clk frequency depending on the parent clock source set. Tuning correction algorithm depends on certain parameters which are sensitive to current clk rate. If the host clk is selected instead of the actual clock rate, tuning correction algorithm may end up applying invalid correction, which could result in errors Fixes: ea8fc5953e8b ("mmc: tegra: update hw tuning process") Signed-off-by: Aniruddha TVS Rao Signed-off-by: Prathamesh Shete Acked-by: Adrian Hunter --- drivers/mmc/host/sdhci-tegra.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index 58449e010a9b..10f6df070456 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -780,7 +780,7 @@ static void tegra_sdhci_set_clock(struct sdhci_host *host, unsigned int clock) dev_err(dev, "failed to set clk rate to %luHz: %d\n", host_clk, err); - tegra_host->curr_clk_rate = host_clk; + tegra_host->curr_clk_rate = clk_get_rate(pltfm_host->clk); if (tegra_host->ddr_signaling) host->max_clk = host_clk; else