From patchwork Thu Sep 15 09:13:31 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benedikt Niedermayr X-Patchwork-Id: 12977089 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 034E0C6FA8B for ; Thu, 15 Sep 2022 09:15:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229993AbiIOJO7 (ORCPT ); Thu, 15 Sep 2022 05:14:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53598 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229992AbiIOJOe (ORCPT ); Thu, 15 Sep 2022 05:14:34 -0400 Received: from EUR04-HE1-obe.outbound.protection.outlook.com (mail-eopbgr70045.outbound.protection.outlook.com [40.107.7.45]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4000B9A95E; Thu, 15 Sep 2022 02:13:49 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=UhEPdt1IXClFF51DqegLobBS5O8H+Cb96PGxPAb3+8CU40CuYMx+u96zvlA4/dZifnOFnqCjNuxxCbVQ6U5cE+qpF/NjVLf1F7mXsY653BN2gV9sppS8mA4mSluWruLdJjGKLfcSq2FhL0+Ti3o6xpYpy8Rvn+dpUqsAC2fIgIHmoUwAG9VYBFOAbHVc8RHEdFu7S42UkurJzJTmSlZDjbkuTGjey+3MX1zPM9MKQ3qvYXaZwhh3SeO5KqPjBhjOQSzE4+HsbL7iaYKxO9BsFUiuf8vVyOPIY0HiPLc0a/3GyZ/Vrgwh+52/vaJ+aCT+a20L9WOgP68tR2XZ9qmd3A== 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=3LA31ygq1hMgtDmqoOcUjTmiJQyywdPZHGL4q1lx9sQ=; b=UpY4qZlN4vzoCiBQZaplr/Jfrkb3I0kwglc8sjdwPjCNLt5h8N/LXHSc62OhhspWiQH/jFRn6MHCDG7+2uAJGmwaiJNhURajtY0aZ/I7DgPsevhi3Sl//qkyuiPSV0hJUQh3za+sR39BPQ01nN80rrmrJ09t2Kq11Sbmujwd+CMSoSoDM4AlpY3oyMTevBbNGsHqq9KiPstPtBT1rMlSwNdHXYMMSWexl8bwb1TXgSGJ06Xgf06H9XXNg5LAO+6P3Pk0IpAuf2pOVzI752je7KiRU72zDbfV9odBHFfI2H/VNQJGWf4slu6UhBWlJOKsnXSnXZxzRdxRF6aJvwrAkQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 194.138.21.75) smtp.rcpttodomain=vger.kernel.org smtp.mailfrom=siemens.com; dmarc=pass (p=none sp=none pct=100) action=none header.from=siemens.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=siemens.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=3LA31ygq1hMgtDmqoOcUjTmiJQyywdPZHGL4q1lx9sQ=; b=YcogvywqHZ0qh3qae9FAumV4Mtc+GLrdSg5zKK4HYH9LXWmyHmUnp3AlD1FeiGay2c5txqgJXfQn/I80ExvE2WpUbSYONMrNsDRnHR7TQRMuaPamZmewwwQwbWXntioguhxGonvj+SPsoNlT0pZVY38Nfuxg0lnpN4WTkuerw7yMt0rZVwl3DC9awXVn3WcbQAIn7yEJoDPm8BNtWGkAx3HmBvGNirdIS4uDs8eQMe7CIDIWgC5TfiGS0iXH9zPMy66kugyEBcyyMqxC72eHbS5Mky/e6/L3z7yJxP8ZXmXx3p58lbA58UUjS4fsxPXg5NpC+Z+ClfXryJghxwiYHA== Received: from AM6PR02CA0032.eurprd02.prod.outlook.com (2603:10a6:20b:6e::45) by DU0PR10MB7406.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:10:445::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5612.16; Thu, 15 Sep 2022 09:13:46 +0000 Received: from VE1EUR01FT046.eop-EUR01.prod.protection.outlook.com (2603:10a6:20b:6e:cafe::6c) by AM6PR02CA0032.outlook.office365.com (2603:10a6:20b:6e::45) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5632.15 via Frontend Transport; Thu, 15 Sep 2022 09:13:44 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 194.138.21.75) smtp.mailfrom=siemens.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=siemens.com; Received-SPF: Pass (protection.outlook.com: domain of siemens.com designates 194.138.21.75 as permitted sender) receiver=protection.outlook.com; client-ip=194.138.21.75; helo=hybrid.siemens.com; pr=C Received: from hybrid.siemens.com (194.138.21.75) by VE1EUR01FT046.mail.protection.outlook.com (10.152.3.92) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5632.12 via Frontend Transport; Thu, 15 Sep 2022 09:13:44 +0000 Received: from DEMCHDC8A0A.ad011.siemens.net (139.25.226.106) by DEMCHDC8VRA.ad011.siemens.net (194.138.21.75) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.12; Thu, 15 Sep 2022 11:13:43 +0200 Received: from bennie-lenovo.fritz.box (144.145.220.66) by DEMCHDC8A0A.ad011.siemens.net (139.25.226.106) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.12; Thu, 15 Sep 2022 11:13:43 +0200 From: "B. Niedermayr" To: , CC: , , , Subject: [PATCH v4 1/3] memory: omap-gpmc: allow shared wait pins Date: Thu, 15 Sep 2022 11:13:31 +0200 Message-ID: <20220915091333.2425306-2-benedikt.niedermayr@siemens.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220915091333.2425306-1-benedikt.niedermayr@siemens.com> References: <20220915091333.2425306-1-benedikt.niedermayr@siemens.com> MIME-Version: 1.0 X-Originating-IP: [144.145.220.66] X-ClientProxiedBy: DEMCHDC8A0A.ad011.siemens.net (139.25.226.106) To DEMCHDC8A0A.ad011.siemens.net (139.25.226.106) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: VE1EUR01FT046:EE_|DU0PR10MB7406:EE_ X-MS-Office365-Filtering-Correlation-Id: 6f66d9f4-644e-43b7-8527-08da96fa96e8 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:194.138.21.75;CTRY:DE;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:hybrid.siemens.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230022)(4636009)(346002)(39860400002)(136003)(376002)(396003)(451199015)(36840700001)(46966006)(40470700004)(478600001)(8676002)(316002)(1076003)(40460700003)(6666004)(47076005)(110136005)(83380400001)(70206006)(336012)(16526019)(956004)(2616005)(40480700001)(36860700001)(36756003)(4326008)(356005)(5660300002)(186003)(82740400003)(41300700001)(86362001)(82960400001)(26005)(54906003)(2906002)(82310400005)(8936002)(81166007)(70586007)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: siemens.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Sep 2022 09:13:44.3688 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 6f66d9f4-644e-43b7-8527-08da96fa96e8 X-MS-Exchange-CrossTenant-Id: 38ae3bcd-9579-4fd4-adda-b42e1495d55a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=38ae3bcd-9579-4fd4-adda-b42e1495d55a;Ip=[194.138.21.75];Helo=[hybrid.siemens.com] X-MS-Exchange-CrossTenant-AuthSource: VE1EUR01FT046.eop-EUR01.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DU0PR10MB7406 Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org From: Benedikt Niedermayr Newer kernels refuse to probe when using the same wait pin for different chipselect regions. But this may be a usecase when connecting for example FPGA or ASIC modules to the gpmc, which only got one wait pin installed. Signed-off-by: Benedikt Niedermayr --- drivers/memory/omap-gpmc.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/memory/omap-gpmc.c b/drivers/memory/omap-gpmc.c index d9bf1c2ac319..e3674a15b934 100644 --- a/drivers/memory/omap-gpmc.c +++ b/drivers/memory/omap-gpmc.c @@ -2221,9 +2221,13 @@ static int gpmc_probe_generic_child(struct platform_device *pdev, GPIO_ACTIVE_HIGH, GPIOD_IN); if (IS_ERR(waitpin_desc)) { - dev_err(&pdev->dev, "invalid wait-pin: %d\n", wait_pin); ret = PTR_ERR(waitpin_desc); - goto err; + if (ret == -EBUSY) { + dev_info(&pdev->dev, "shared wait-pin: %d\n", wait_pin); + } else { + dev_err(&pdev->dev, "invalid wait-pin: %d\n", wait_pin); + goto err; + } } }