From patchwork Tue Jan 18 21:41:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robert Hancock X-Patchwork-Id: 12716926 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 484F4C433F5 for ; Tue, 18 Jan 2022 21:44:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=sxv7od0OLlSQzx/dihP5DWtaLYHG+BNA8+QD25SohIA=; b=0an3vzBJ38dvWr krJHxeVvNxkw6mXLB3rrm0eaN1RyhUu2xEgBZ7S1OBPqZOpMEWBsf4EbMg44YmnFIEUSsA1zHrK1i Aa15XSO8k4ugyduNzH5vAueq/3FacGpGIclIPoEKvUGw15L3WhBG+IqVKiS9RhBiNP+t7sPGwk4GH V+ZGgD4pkpIPSYyZTb4szpmRrfr0ij9ylbgyYU646RDddUQCteTBvGl6bp9s2u2iVK4WnavBfmqhF iEfEQxKXg9XZyHMhoVujRBLxfrsVZZV9BAohGjDFjOM5oxGAh4/acwpVgMCqxyHulHcvE8UqvMiM7 C3KK7sxW03GMzb75sgYQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1n9wFr-0031E7-7V; Tue, 18 Jan 2022 21:43:03 +0000 Received: from mx0d-0054df01.pphosted.com ([67.231.150.19]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1n9wFV-003191-My for linux-arm-kernel@lists.infradead.org; Tue, 18 Jan 2022 21:42:43 +0000 Received: from pps.filterd (m0209000.ppops.net [127.0.0.1]) by mx0c-0054df01.pphosted.com (8.16.1.2/8.16.1.2) with ESMTP id 20IBseYa030788; Tue, 18 Jan 2022 16:42:26 -0500 Received: from can01-to1-obe.outbound.protection.outlook.com (mail-to1can01lp2057.outbound.protection.outlook.com [104.47.61.57]) by mx0c-0054df01.pphosted.com (PPS) with ESMTPS id 3dnbdu0rt8-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 18 Jan 2022 16:42:26 -0500 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=mz/m22+5qzy9HeY9jdJaA86p1I05W/glSt1sO8sw1E0KZQNejFebwd+cslzmW80tVM1DTZ9/32p7LyS7+bytFWH52nzz3J2th/00JRZRbuq8F+l89fOj9zUk0w9fSaDlBzajkmfMtdDi46pQHMUwzijMwJQCViFhZ+Ie695Y0vm1pU5tyvwsqVJS1vzPU4I6ts1fbfJDWJ0VcThdJl8uQoewPYux+PCJ4qnen35yUkcOcbKNLGMarkQLDHmlF2UtqzeLL6f/k64qD1Y6XOfYCpjTSvYRQ1Gox6TwWElQxxrQHsuwL0xrTVUJRp+jIdIj3c+v/idRABcKaG/SwKvvPg== 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=rQDwv7K5I92pVNAUfKU/K6FGICV3JjVTyK7hQ+R2BWI=; b=Efx5wus724uJmWwcxweHwC86vU9IGiJ72lmZCOTag77G6t2GUoSReCcOSEeuo93MNfbAMKMOyWrZdizkDOmWkvj4Es5y02J1G8Xd8jdND6czRz9aUsdQYx40XePhX0Anzxjx0uJvuPPqsoQyptqim/3CcEXV8QQuarXHYqnWxlSxknzXGJPIdXMxSbk9uTvPuLXI0uJCoVALJfrNgKubxA9osmtmOoid2r+igbfW1DS1Pm1Xhi0Uq9pnmz/QlxrevTF2EbjFnqHIgO0s6d7aqllTrIQPztGeVjzgcJRCbRWeVcBJ0K/aRe1NZX1WcleCzZ5oD/XfTKclZcE/+00Sgw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=calian.com; dmarc=pass action=none header.from=calian.com; dkim=pass header.d=calian.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=calian.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=rQDwv7K5I92pVNAUfKU/K6FGICV3JjVTyK7hQ+R2BWI=; b=GKciGDdrrCP3DqGS4Ryt//YIhk+kdIbqMjhbHP51lclVw3c49t3u4+e0bdh44sXpbE47Ywqprp5mw5XX3/FHUsR+JLCeFaxSWIWotDRvFbv+XUf9GrctlEyfR847diDA0ae0u/9j+gndfc/IDDrU1KUbzKLyRB/LjenGr2Quk5w= Received: from YT3PR01MB6274.CANPRD01.PROD.OUTLOOK.COM (2603:10b6:b01:6a::19) by YT3PR01MB6003.CANPRD01.PROD.OUTLOOK.COM (2603:10b6:b01:68::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4888.11; Tue, 18 Jan 2022 21:42:25 +0000 Received: from YT3PR01MB6274.CANPRD01.PROD.OUTLOOK.COM ([fe80::6929:c39f:d893:b6c8]) by YT3PR01MB6274.CANPRD01.PROD.OUTLOOK.COM ([fe80::6929:c39f:d893:b6c8%2]) with mapi id 15.20.4888.014; Tue, 18 Jan 2022 21:42:25 +0000 From: Robert Hancock To: netdev@vger.kernel.org Cc: radhey.shyam.pandey@xilinx.com, davem@davemloft.net, kuba@kernel.org, linux-arm-kernel@lists.infradead.org, michal.simek@xilinx.com, daniel@iogearbox.net, andrew@lunn.ch, Robert Hancock Subject: [PATCH net v3 3/9] net: axienet: reset core on initialization prior to MDIO access Date: Tue, 18 Jan 2022 15:41:26 -0600 Message-Id: <20220118214132.357349-4-robert.hancock@calian.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220118214132.357349-1-robert.hancock@calian.com> References: <20220118214132.357349-1-robert.hancock@calian.com> X-ClientProxiedBy: MWHPR03CA0009.namprd03.prod.outlook.com (2603:10b6:300:117::19) To YT3PR01MB6274.CANPRD01.PROD.OUTLOOK.COM (2603:10b6:b01:6a::19) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 497c4ec0-5ea2-4271-11a8-08d9dacb6ab0 X-MS-TrafficTypeDiagnostic: YT3PR01MB6003:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:9508; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: leB7gjbBqZECx73x8PSxXdAO3Dse8gx4NxL7OySF1Exye7DmgFb7XNM5hIu4SaSkCkAAZkrQm9VI8HUGCWrJEWceKhP4F0Oakitp//L11ngEWfrYav9EF0sW80Z/iAVYAVK9iQ6ciinH/9pEk3r7MCZYIDkpmAe8QZVLGhlP3D43JlMbjIYUCm3hXw0XXcG8a1G2ovVq4gIYdAJ4pV/qnztIKkcCOqZLplSUfDA5J+OIEcXICOexB7hXhrHop2E0Kqixal8FRSd9lXxisAK2AFW0Szc2JUdFmY3bUDMOXUvveVvhmPu9wCjVIT5USh6yZFMYyLePZT1qOctHW1588AprkFFb2ts8r8eFSYlHhaf83hinATqOBukTu9JVg6L9JWplR8N9HNNYTE6fqkKx63use/df+41w9y22hi4bHrH1YNQQtNG3QzyBsluzzfemjG8ZgwFWi8KjsD3Z7mze6GnLQFJIQlVxtdOF8j1/ShtFYmUIf/6hfdw14fkRlALervuOKNe0CL2uK7ak3llzgs028XaF6upVTWKDX76tXe+BdTewO0A2iKrjwmgJ8wX98kqKEfjBH3oJeBqXxtB34CibXtuV2mdDaUuUSsZaMq8EgL9R7928oQKoApI9z3a4UJWB4yLlMdGbPxLmBFWsp3MzCOzWjDhQQzDAH2oJQ/+VsIyvAy0ZJrZujegM/UP3lS46bYAoqh+t5pqMEBQO7w== X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:YT3PR01MB6274.CANPRD01.PROD.OUTLOOK.COM; PTR:; CAT:NONE; SFS:(4636009)(366004)(6506007)(1076003)(66556008)(6486002)(86362001)(66476007)(8676002)(38350700002)(83380400001)(186003)(66946007)(6916009)(26005)(2616005)(4326008)(36756003)(508600001)(2906002)(8936002)(38100700002)(52116002)(107886003)(44832011)(6512007)(5660300002)(316002); DIR:OUT; SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: calian.com X-MS-Exchange-CrossTenant-Network-Message-Id: 497c4ec0-5ea2-4271-11a8-08d9dacb6ab0 X-MS-Exchange-CrossTenant-AuthSource: YT3PR01MB6274.CANPRD01.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Jan 2022 21:42:25.4338 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 23b57807-562f-49ad-92c4-3bb0f07a1fdf X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: Yv2Q7OQd5zn5vV8BF6WXSAe8/Eg37ETfgAvTVdlmdAB8KG5Sn/gxVa6Raj5Cj2S7lFFR0NJ6SGQgzUPZj1QXUTcTkr+tIZ8titYAo/ZrKkc= X-MS-Exchange-Transport-CrossTenantHeadersStamped: YT3PR01MB6003 X-Proofpoint-ORIG-GUID: kJuxFHgu2Qlihe8GHfcT5sIOQkmzBieW X-Proofpoint-GUID: kJuxFHgu2Qlihe8GHfcT5sIOQkmzBieW X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.816,Hydra:6.0.425,FMLib:17.11.62.513 definitions=2022-01-18_05,2022-01-18_01,2021-12-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 mlxscore=0 suspectscore=0 impostorscore=0 lowpriorityscore=0 mlxlogscore=999 clxscore=1015 priorityscore=1501 malwarescore=0 bulkscore=0 spamscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2110150000 definitions=main-2201180122 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220118_134241_921124_33C9C5F8 X-CRM114-Status: GOOD ( 14.52 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org In some cases where the Xilinx Ethernet core was used in 1000Base-X or SGMII modes, which use the internal PCS/PMA PHY, and the MGT transceiver clock source for the PCS was not running at the time the FPGA logic was loaded, the core would come up in a state where the PCS could not be found on the MDIO bus. To fix this, the Ethernet core (including the PCS) should be reset after enabling the clocks, prior to attempting to access the PCS using of_mdio_find_device. Fixes: 1a02556086fc (net: axienet: Properly handle PCS/PMA PHY for 1000BaseX mode) Signed-off-by: Robert Hancock Reviewed-by: Andrew Lunn --- drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c index 3a2d7e8c3f66..53ff38cbc37b 100644 --- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c +++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c @@ -2036,6 +2036,11 @@ static int axienet_probe(struct platform_device *pdev) lp->coalesce_count_rx = XAXIDMA_DFT_RX_THRESHOLD; lp->coalesce_count_tx = XAXIDMA_DFT_TX_THRESHOLD; + /* Reset core now that clocks are enabled, prior to accessing MDIO */ + ret = __axienet_device_reset(lp); + if (ret) + goto cleanup_clk; + lp->phy_node = of_parse_phandle(pdev->dev.of_node, "phy-handle", 0); if (lp->phy_node) { ret = axienet_mdio_setup(lp);