From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from AM0PR83CU005.outbound.protection.outlook.com (mail-westeuropeazon11020114.outbound.protection.outlook.com [52.101.69.114]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D1D2142A9D; Wed, 11 Jun 2025 06:49:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.69.114 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749624572; cv=fail; b=t3/X4O4s3IAuDBG2jGDGiMPws6Uw/P+Vz58PuOyVtkP4jyjgqzlVCYJyqCDTRwic04lavLrKDHQSwstbwOovO9g+wS19zJ+Iy9Oie60jDefQf59HtZRp0c4v05MhdysePENImi/5fGMH+Pr+v2kVfb2Q45JQdH59AbtVTevzlcI= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749624572; c=relaxed/simple; bh=GkWpN4h/NVhiWMzwkKJjLeE+M+xLPTByiroMcBlwFkE=; h=Message-ID:Date:From:Subject:To:CC:References:In-Reply-To: Content-Type:MIME-Version; b=fZewdieBWlOohyC8D8DSJZhAtuyFBmeRqU5L3lIs/95e69P3kh8hUR10+r8wN6lDf1vUM42/zzYNIWoO2Bclxi0Q3CcOgfw7jwN7q0udDM1/Mk/q7liKumZDo8lPTKRvGGHj8H28XmUsxgC9PfiYVFzFqL+qN7X9mgSSjrjRuDs= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=topic.nl; spf=pass smtp.mailfrom=topic.nl; dkim=pass (2048-bit key) header.d=topic.nl header.i=@topic.nl header.b=mnw9CJCw; arc=fail smtp.client-ip=52.101.69.114 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=topic.nl Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=topic.nl Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=topic.nl header.i=@topic.nl header.b="mnw9CJCw" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=rH+HaJ6IdEKIEwxNtkqdlO80CqHdYEejYsLCwNjKwC33Ebw7DB/T9I6/kgh7pupWI1ZW3o71GNlYGwl4KIMNfjbk1kXmXAO2woExosAqOCoTRyCX2WLtlPqHscKDGPFsl9i29Oxj7pQnB4bPQzowfaxtAliPxcm06ddSi8P7gcgF6N0yy9fU+1meA24Dso4ZVCBGu2P3nWR6cR1WR/dzqP5644efuxKJu8LZYxaNEspcb041ZQZiYnqt5fvM7XjVTDibWW3mbyXj4Ya70QbTIVyL4cp8QbNdgNc+mq9HDmcJNKkeLlsJoq9YSZzvjBwP30rXqkBMqWbZQ9b/oV3j+g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; 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=7gEePvVteGlezR8qihY8fAlNsANRp3dQthQtDf2V+8w=; b=vsGTpHn0UN3zocKYGK1a6yrky5M0klsLENhDXjViYCMVz17jnVSpO7wKU+mcjTEJxzxZ0Bsh9b5xo1oeWCSxoZaDqXsM6wLl/I3FQSB5W1pI1kh/pz/bGohL0fpbmGsArtvQSDjgG7CeUA3xeBWfwCgbMoDPN6fVDClrQR22GqX0bzK8I8eMNQa3KdmqiCdmYr6H78RCafoT7IdlPgjsYGSa4no4lsOwEeELyPG5W+CuhSWhic7XkYqUMG+sAQkfTmf2xfgtnY9epCIrVHNfEKHW+olti/6LvcOOG5WRkph8DFO+qxL7oSpN7Nl6Byqyh5yPEordyAzVBKXm1jhqcQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 13.93.42.39) smtp.rcpttodomain=kernel.org smtp.mailfrom=topic.nl; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=topic.nl; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=topic.nl; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=7gEePvVteGlezR8qihY8fAlNsANRp3dQthQtDf2V+8w=; b=mnw9CJCwA3Rb5cK1YabY7AyJElg74RccPQc1oBOiLnlW1p63wtfkOgK73rlAVDqnv/QC8PQgUrPI7PkZSP/zd3lmaFuhrdVr8yzX8moPItEDSPpsnuuhnkSn8n753IdYxe+7yWLSuDqTEtKV0Ic20XWF4NbXXZ5zC4siHCn8WMvaBeQsZe00eUcHJhd2hH3yZ09hqBMPN2tZ6Y/q+k/9j3ulQyT9y446z6ytj23/0F67Hglfzxnm/SHfNG9txa0asloAPv+gvhUM3KYnEDj2f5OxsyTxLfFQZn81BVo6Nx41aAcBfOnLhKCvVyhokKVh9dx55AnSzJLa9yW9R10uOw== Received: from DUZPR01CA0005.eurprd01.prod.exchangelabs.com (2603:10a6:10:3c3::9) by DBBPR04MB7548.eurprd04.prod.outlook.com (2603:10a6:10:20c::8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8813.20; Wed, 11 Jun 2025 06:48:56 +0000 Received: from DU6PEPF0000952A.eurprd02.prod.outlook.com (2603:10a6:10:3c3:cafe::7a) by DUZPR01CA0005.outlook.office365.com (2603:10a6:10:3c3::9) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.20.8835.19 via Frontend Transport; Wed, 11 Jun 2025 06:49:17 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 13.93.42.39) smtp.mailfrom=topic.nl; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=topic.nl; Received-SPF: Pass (protection.outlook.com: domain of topic.nl designates 13.93.42.39 as permitted sender) receiver=protection.outlook.com; client-ip=13.93.42.39; helo=westeu12-emailsignatures-cloud.codetwo.com; pr=C Received: from westeu12-emailsignatures-cloud.codetwo.com (13.93.42.39) by DU6PEPF0000952A.mail.protection.outlook.com (10.167.8.11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8835.15 via Frontend Transport; Wed, 11 Jun 2025 06:48:56 +0000 Received: from PA4PR04CU001.outbound.protection.outlook.com (40.93.76.78) by westeu12-emailsignatures-cloud.codetwo.com with CodeTwo SMTP Server (TLS12) via SMTP; Wed, 11 Jun 2025 06:48:55 +0000 Authentication-Results-Original: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=topic.nl; Received: from AS8PR04MB8644.eurprd04.prod.outlook.com (2603:10a6:20b:42b::12) by VI0PR04MB10662.eurprd04.prod.outlook.com (2603:10a6:800:26c::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8813.31; Wed, 11 Jun 2025 06:48:52 +0000 Received: from AS8PR04MB8644.eurprd04.prod.outlook.com ([fe80::e86d:f110:534e:480a]) by AS8PR04MB8644.eurprd04.prod.outlook.com ([fe80::e86d:f110:534e:480a%4]) with mapi id 15.20.8835.018; Wed, 11 Jun 2025 06:48:52 +0000 Message-ID: <9f8a7c43-4862-45aa-951c-bf3e3c1f5513@topic.nl> Date: Wed, 11 Jun 2025 08:48:51 +0200 User-Agent: Mozilla Thunderbird From: Mike Looijmans Subject: Re: [PATCH v4 1/2] PCI: xilinx: Wait for link-up status during initialization To: Bjorn Helgaas CC: linux-pci@vger.kernel.org, Bjorn Helgaas , =?UTF-8?Q?Krzysztof_Wilczy=C5=84ski?= , Lorenzo Pieralisi , Manivannan Sadhasivam , Michal Simek , Rob Herring , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20250610185734.GA819344@bhelgaas> <1b153bce-a66a-45ee-a5c6-963ea6fb1c82.949ef384-8293-46b8-903f-40a477c056ae.bd37b5e5-7e20-4db7-b2f4-b11b97bc1326@emailsignatures365.codetwo.com> Content-Language: nl, en-US Organization: TOPIC In-Reply-To: <20250610185734.GA819344@bhelgaas> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: AS4P192CA0024.EURP192.PROD.OUTLOOK.COM (2603:10a6:20b:5e1::16) To AS8PR04MB8644.eurprd04.prod.outlook.com (2603:10a6:20b:42b::12) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-TrafficTypeDiagnostic: AS8PR04MB8644:EE_|VI0PR04MB10662:EE_|DU6PEPF0000952A:EE_|DBBPR04MB7548:EE_ X-MS-Office365-Filtering-Correlation-Id: 55169798-c478-437c-1a79-08dda8b40995 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam-Untrusted: BCL:0;ARA:13230040|376014|7416014|1800799024|366016; X-Microsoft-Antispam-Message-Info-Original: =?utf-8?B?TWwvVGJyMzcyblZrS3c5NXlPbUo0VDNRTXNmUkEzR1Qvd3FYSytCeUtlOUJL?= =?utf-8?B?SGFkQVpKazlzRXFvRHFBVytFSXNSU3JXTFV5cE1GRzdiS0NpM2gvWmJidU5R?= =?utf-8?B?YTFpamgvTUJnb0dmay9xVTltWG1rMnFReStWM1BhMStuNjA0OEZZT0pUTHVu?= =?utf-8?B?a1ZlVTRQS21NN3VrWjRzNm42cUI2KytZVDRQbU11dmNVQkMwbDRiL1hNcWl3?= =?utf-8?B?K2Nta25kMW9ETFc5ZHpXc3U0L2dvSTlDU21RSHhmYWIyUUYxdDBmSnFsUXB3?= =?utf-8?B?dzRxVDVnSXRUWERtUXE3bmlIRmRSREk3anNDeXluNmp4VTJtbUZtOUlNSzdj?= =?utf-8?B?U21xSDZ0NWpTYUhyYUJSdE01QU4zTlJ4b2lzN1ljd0xBU3VtMGs3YnhjOHlX?= =?utf-8?B?a0lnWFlCbkN2ZVRydDk3M3JSVDROWDZhbVNGTVF3b1JxVU94UnBVYXBYYmxQ?= =?utf-8?B?QWRoUWpGTi9GSktHMTh3V2RaL3AwMm4yVjBkT1cya0p1K1g3dTVXQ2ErUlFn?= =?utf-8?B?dHJLVWVWS25TOFJQWUtwazVFVEllTjBzUDBUWFNIV2ZORjBCQTFhOGtCbHpz?= =?utf-8?B?RC9YZGtWOTlTbDV0dTd2Z0ZFVTBqMUJ3Y2N5UWtXMzl2MG54USs2UlFtR0NZ?= =?utf-8?B?ODhKTTRnRGIyZnhrNDBNdzI4MGl4cEJRVDdZcTk0MS8rRS9VQnI3SWM0K2Qz?= =?utf-8?B?cjZOT0JiWlU2QTVXaDdBeitTWTFVbWorb2V0bWwrU1pjYjlRVlo0WDZ0bjJ0?= =?utf-8?B?aDRwSTQ2RWtrU0MxNmdwWlBKcjRPYjBYN0pSM2lZNUJudTFld1ZvSXF1Y01i?= =?utf-8?B?ZWdoY3ZVYUk5RzYrZ1ZkL000ZUZDOHcwS3gyUkZtTU5pbGhRbGIrYWM4cUd1?= =?utf-8?B?ZE43NjZWa0hBMHBMczkvazVXSUN1WVNpVDZXdUFKU2NXZ2lSaTZhTjIwU3U1?= =?utf-8?B?Z3B3VEJlYndZUmFXYlhyUnc0NGJhWU83dzNML2xlRTR2YmdsR3h3UUZhSHFn?= =?utf-8?B?SDdBQ05zUWFyTUlvRzBxdnluT3Z6ZmtPMkRIY2dOb1NlRllqNDlmQ3QvZE92?= =?utf-8?B?VTJhcHJ5bFBHMlI4cnMxOHFyaFUza3c0dTdMM1hENVk4cXhmU3YxWmZaV0lu?= =?utf-8?B?Nmx0dlV5TEN3NFhicFZ3NXlhZkZnQnRsVTBmOVFMWGZ3NE8vdk9CbEFnVXFw?= =?utf-8?B?aFplT3VNVDRHdWxTSStuQ1JSYkU5aUVLckhPcHJGMUxVd1phcjBoRWhvVlNB?= =?utf-8?B?ejUwakIrSDJmb3dIcDZiUzd3alFiemQ0R1ZzV2YxZGJsQjk5eWFmd244cXFR?= =?utf-8?B?c1YydE9aK2ZLZHd0cjVoWGtVUkN3UGQ3ZXNrTS9VRUVMZTUrM0RyQTJQbC9I?= =?utf-8?B?WXBOWjdSbzdUWUdBTEtFNHo0RzNQNWY1dUJGNzJqS1VMWFlBUTIrQmZYc0V3?= =?utf-8?B?OWFQZ1BtSGdqK2tOUXJMcXhRUFBxNDlEei9DdXpGbWhaS1NsSDJ2NTdFaVli?= =?utf-8?B?OXIxK2VmN2hUVDQxaEpVSFQwcGNSaEpNbHRReHpEVVpURGV2MGJkdEZMRWJu?= =?utf-8?B?bXlXWDdHVUZ4WlV6MzVjNFZsL0ZkOHo2eTRBMW9WK2d6akVRUlViVTNQRWx4?= =?utf-8?B?SkhBbFByZ1N2VWpSbERvQ1ZLMUIrd1lLcjJRR1UyTzhtMkIyQXFKREo1MmF3?= =?utf-8?B?Vm1xWUp0NU5XZFU4UXlGU0tYdXFUS016bTF2bHk2VzhUeEE4U1Zpb1UwME9Z?= =?utf-8?B?VExPeGY5SmhreUhubTY5bStXdDJIcmRQb1ZwMzZHZGg3a2hjZHZ0b2tCT0xu?= =?utf-8?B?cTVZOFZyc2grZkVJdjg2VWRuRlhhdURQUStaUTdkVlBlU0FYRHI5UEpkZDY0?= =?utf-8?B?aGhnb2tkRG9GQmhTeHRwT2xiMEFzVXdrWVUwQzRGNGYvQjR6SGRHU1FsZWNT?= =?utf-8?Q?w5j6qhihsP0=3D?= X-Forefront-Antispam-Report-Untrusted: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AS8PR04MB8644.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(376014)(7416014)(1800799024)(366016);DIR:OUT;SFP:1102; X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI0PR04MB10662 X-CodeTwo-MessageID: 21e8da7b-ef22-4670-a7b8-e91449d04111.20250611064855@westeu12-emailsignatures-cloud.codetwo.com X-CodeTwoProcessed: true X-EOPAttributedMessage: 0 X-MS-Exchange-Transport-CrossTenantHeadersStripped: DU6PEPF0000952A.eurprd02.prod.outlook.com X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id-Prvs: b7ce279e-8c02-4f45-f351-08dda8b406f2 X-Microsoft-Antispam: BCL:0;ARA:13230040|35042699022|36860700013|7416014|82310400026|376014|1800799024|14060799003; X-Microsoft-Antispam-Message-Info: =?utf-8?B?am5yL2IvQUdHWWpuMnhNOUdRaHp1dC83aUN0bDE5S0xIcy9MVkdPN3dnR2NX?= =?utf-8?B?VU1JU1ZCMVBoSldaQ29LS3lDQ0k0RXM0NTIrSStDK0ZXQytWb2hsdjRTWC9o?= =?utf-8?B?dGhnUG1oQzhHdnFRWVdXTmdmdmNXNnRheDF2WXBVV09HREdDVUtwcHVoV0hG?= =?utf-8?B?Vkx3ZkZ0UkhWdlIvM3ZiU2E3OUtDMis1blpiYWJsTVJROHJPeElnYm5UbnRD?= =?utf-8?B?TUdrR1F0NktJMmpzdXMxSG94WmpZa0RmNDBaZTRMK2VLeFJiSXFNa0ZJZ0dm?= =?utf-8?B?NDRVdkkybWZvNWhVdnN0eTJaY21MSzRKYXZuZmwzK1RRQUFML0U0RzJDVXc0?= =?utf-8?B?L2V6clpEN3RpODUrY1I4VHc1VkJGdE45VEMyc1FsL2RKOWYwOUp2Q1dPY0w1?= =?utf-8?B?YVF5dnhmTTBCcktmcGt6VDNPNmRORzRHekwyMUs1VFo4ZCs5NGpOWTBMRzFy?= =?utf-8?B?bDhyRXJCRlFNbjFEWWRST3lYdGtiRVZSOUVlT2JyeFRKZG1RWnQ2VGhpVXlU?= =?utf-8?B?WCtXWHZhK1FibHQ4alh5SFBtLzJ6TCtSY1prOVJndDgyOS9abndJWlJuR2lv?= =?utf-8?B?RmdmMFM4M1ZidEpYeTA4N3NZM3A4b3RZejVJSDVRZGdocUk3b1gvd3h0VVMy?= =?utf-8?B?R1hKakxoelZ3SWZpMlZqYlZtSXRLUWVQamdBRDBzYTh1SXFpY0NQSXI0cHdL?= =?utf-8?B?YkZNaDBsTElXMjFia1JiZCt3RnpwYVFuNndFa1E1ZzJJQTY4V1hwTUNuZEdv?= =?utf-8?B?RTJqZ1JrVFRvdmZ3dHh3cElRMGl6RFUxYkRDeEx1bzVPTHMycFBGZVkxQyto?= =?utf-8?B?ZWp6cGtWM1RFSS9nbllEWFRPNjVRZEpuSUE4N3l1anlYcUtHdW00NEJBV0ow?= =?utf-8?B?M0pZaFNrL3RidTdkaE1RT3FSUnJ6SlpST3pqRzZoa1VBR0lMV3RzQ2xuR3U5?= =?utf-8?B?NndmS1NMYnV0RUMwaDlXMGoycU5FRXVFSmFXOE1RSGljYkhKKzdXQVgvYkJY?= =?utf-8?B?cWE0RmljaTVQK0paTzlRNzN0Sm50OEtTZjB6QkhHbFd1Zm8rZHYybnU1YjRX?= =?utf-8?B?Zks0aEdCMDdHK2ltNlZFbFVsY3E5ZS9Bc3dJKzMxUUpDNFFDOVhEVmdYWExN?= =?utf-8?B?M0g3MmtndDVtSlkyVnMyQm1MVDcvQkswMlpvMkFQL1pvWXgzcENZZHpUZkpv?= =?utf-8?B?bFJlWDNEdGxRWGRmdnBvSTJWUXI2UHV2RlRieDQ0dElDT0R6K1NkZXlDU2J6?= =?utf-8?B?bCt4Q25maXJvMEJhdS9VTk9LWWU3VStCbFlvRVVva05JUVpkRWY0MXBQYUk3?= =?utf-8?B?Q3dURkxHdVJwbUx6SFVNOHF4bFlYdVg4bFFMMjNSM2xpN3Z2VzlIV1NpNkFT?= =?utf-8?B?ZUF0T21OdHpnYnBjNm5saW8zMjlnWWlTbUxUcXpOQlh2WnZ2SzhnT3JlRFQv?= =?utf-8?B?ZVRaZUJSOEpVV0hMUlVTYWlFeG5OcHZvamhGUVlQWDZZWmppWjZ0eFRpWTJ4?= =?utf-8?B?Z0hUaFRIZTI4ZlVPZW5sNytsKytYOXRKZlc1dnoxREkzUmozS0h6VWJsc0I3?= =?utf-8?B?elk4T1I2aThPajNrS25rbkJmNEhyVTVPVkVKY0FnU0FnUGpweUtjNG5mMDJt?= =?utf-8?B?V284V1dqQUQxb1JSMzhTdnh5MHJzY3B4VU1tSXgwd0VQdVg5anZMUWxSTTVG?= =?utf-8?B?U1VUUmplMFF4dUY0UExUTTBobi9vYm90NVlaUjkwREhGTDZCQWQ2Y1J4enRP?= =?utf-8?B?K045dVN2Z1RaTEQ3eG1HdnkyVjFlYzBXYVJBV1BiOFhuM2luWFh6cVVEdFpX?= =?utf-8?B?MHZRSGtrVHVEb3FoN1FaZDhRc2IxZVAwM3l5cmJsTGg3RnV6OUhLdy9jbjRN?= =?utf-8?B?UFJwMlpHMVdZN28xM3c4NlpzeHdMaGVnUFJLSFMvTFNVa1VHQTFvVGxBMTdH?= =?utf-8?B?eFg0R3BhNHh2K0w0c1ZyYm95cFd0b1FWcFBnV1EyRGk0Vm8rVWpXZEdLdHU4?= =?utf-8?B?bHUyTm5JZDh3PT0=?= X-Forefront-Antispam-Report: CIP:13.93.42.39;CTRY:NL;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:westeu12-emailsignatures-cloud.codetwo.com;PTR:westeu12-emailsignatures-cloud.codetwo.com;CAT:NONE;SFS:(13230040)(35042699022)(36860700013)(7416014)(82310400026)(376014)(1800799024)(14060799003);DIR:OUT;SFP:1102; X-OriginatorOrg: topic.nl X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Jun 2025 06:48:56.2944 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 55169798-c478-437c-1a79-08dda8b40995 X-MS-Exchange-CrossTenant-Id: 449607a5-3517-482d-8d16-41dd868cbda3 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=449607a5-3517-482d-8d16-41dd868cbda3;Ip=[13.93.42.39];Helo=[westeu12-emailsignatures-cloud.codetwo.com] X-MS-Exchange-CrossTenant-AuthSource: DU6PEPF0000952A.eurprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DBBPR04MB7548 Met vriendelijke groet / kind regards,=0A= =0A= Mike Looijmans=0A= System Expert=0A= =0A= =0A= TOPIC Embedded Products B.V.=0A= Materiaalweg 4, 5681 RJ Best=0A= The Netherlands=0A= =0A= T: +31 (0) 499 33 69 69=0A= E: mike.looijmans@topic.nl=0A= W: www.topic.nl=0A= =0A= Please consider the environment before printing this e-mail=0A= On 10-06-2025 20:57, Bjorn Helgaas wrote: > On Tue, Jun 10, 2025 at 04:39:03PM +0200, Mike Looijmans wrote: >> When the driver loads, the transceiver and endpoint may still be setting >> up a link. Wait for that to complete before continuing. This fixes that >> the PCIe core does not work when loading the PL bitstream from >> userspace. Existing reference designs worked because the endpoint and >> PL were initialized by a bootloader. If the endpoint power and/or reset >> is supplied by the kernel, or if the PL is programmed from within the >> kernel, the link won't be up yet and the driver just has to wait for >> link training to finish. >> >> As the PCIe spec allows up to 100 ms time to establish a link, we'll >> allow up to 200ms before giving up. >> +static int xilinx_pci_wait_link_up(struct xilinx_pcie *pcie) >> +{ >> + u32 val; >> + >> + /* >> + * PCIe r6.0, sec 6.6.1 provides 100ms timeout. Since this is FPGA >> + * fabric, we're more lenient and allow 200 ms for link training. >> + */ >> + return readl_poll_timeout(pcie->reg_base + XILINX_PCIE_REG_PSCR, val, >> + (val & XILINX_PCIE_REG_PSCR_LNKUP), 2 * USEC_PER_MSEC, >> + 2 * PCIE_T_RRS_READY_MS * USEC_PER_MSEC); >> +} > I don't think this is what PCIE_T_RRS_READY_MS is for. Sec 6.6.1 > requires 100ms *after* the link is up before sending config requests: > > For cases where system software cannot determine that DRS is > supported by the attached device, or by the Downstream Port above > the attached device: > > =E2=97=A6 With a Downstream Port that does not support Link speeds g= reater > than 5.0 GT/s, software must wait a minimum of 100 ms following > exit from a Conventional Reset before sending a Configuration > Request to the device immediately below that Port. > > =E2=97=A6 With a Downstream Port that supports Link speeds greater t= han > 5.0 GT/s, software must wait a minimum of 100 ms after Link > training completes before sending a Configuration Request to the > device immediately below that Port. Software can determine when > Link training completes by polling the Data Link Layer Link > Active bit or by setting up an associated interrupt (see =C2=A7 > Section 6.7.3.3). It is strongly recommended for software to > use this mechanism whenever the Downstream Port supports it. > Yeah, true, I misread the comment in pci.h. I cannot find any #define to ma= tch=20 the "how long to wait for link training". Each driver appears to use its ow= n=20 timeout. So I should just create my own?