From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B2E18C31E40 for ; Mon, 12 Aug 2019 04:22:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 775F220673 for ; Mon, 12 Aug 2019 04:22:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=nxp.com header.i=@nxp.com header.b="fSYnsV2a" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726893AbfHLEWf (ORCPT ); Mon, 12 Aug 2019 00:22:35 -0400 Received: from mail-eopbgr10050.outbound.protection.outlook.com ([40.107.1.50]:13314 "EHLO EUR02-HE1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726842AbfHLEWa (ORCPT ); Mon, 12 Aug 2019 00:22:30 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=HBGfAQxPdqZ+qFu1Ht+3zS8sRoGxL/0JDZsB6hY9FtuTQKshOAyGAZjue4JCe8rTSB0Sa1YbFtZi/C/f3b+tPQ3hIAiHHoym+BWnJsYszf5iavwmAk6dXLwMyoDanmkFZjWhoEuJxst8mPtZgCff9veovNHrPkQzdHAJhY6SzZczid4XUSGb+jQj5kGiWwhEyTmAFZwezOR7sUJVDcS8NJmoBedZYzhXujm3gDYSix8k4vsxup3FOPQHf/1COyMMqLnVcgAbhEOQPdZGk7R74Oey6hicYm734LCEUzXa+WCDjQGZuxmKp0k+fGKROTsavo7ror9XPYOrMibHyVzLrg== 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-SenderADCheck; bh=NlsvvGeC0t2U8knoO4OapukZYA+UnLsvvJuxHIgblvg=; b=dovUMCdT/NjgHXN3wNCux5yaTTpLrffrNKgpFNgK3hRwbEywXedY+wRxiGue8Oavbu+H5Zp91nz+0m/omT9PpJ0Y83xtYH0D+juD4rJwioxz+4NLpMJ1API61WvmC90yJUNQ3M/gjl2vr3X8Sg8hhDFF7QWwobhvoV0O9J++qWG5haQELLO8POclLp3jbEoQOzC1vN4QMVm56HxFWK8QAPKp1Jf/bQnZ/tB7KeKpKCTrtbV+nFrlwKH4494dJrYQNESoSZ3xLqWBCJKYaBxWidR6ElxqVbXdaiAgp6exeNc/TN02JnpYP5TTNIruJ5qvwP0Rp5/Kr+8eQl2UUpPSXg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nxp.com; dmarc=pass action=none header.from=nxp.com; dkim=pass header.d=nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=NlsvvGeC0t2U8knoO4OapukZYA+UnLsvvJuxHIgblvg=; b=fSYnsV2a9ddXriAJ1+Z/2FNrlW0RSuWNyR9te+ynm7jhm2AKPsybC0K5XQJWvBqUDGHFnapm8ihBLifyPs699UFipSxHJb4gJB66hJTIr37Ej+cQ4Q+VwwdcshyY4YQE508e+txB8h2v1hJN2la2Uc35XzkByraxlykmt6Tkxs4= Received: from DB8PR04MB6747.eurprd04.prod.outlook.com (20.179.250.159) by DB8PR04MB5931.eurprd04.prod.outlook.com (20.179.11.140) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2157.23; Mon, 12 Aug 2019 04:22:28 +0000 Received: from DB8PR04MB6747.eurprd04.prod.outlook.com ([fe80::19ec:cddf:5e07:37eb]) by DB8PR04MB6747.eurprd04.prod.outlook.com ([fe80::19ec:cddf:5e07:37eb%3]) with mapi id 15.20.2157.015; Mon, 12 Aug 2019 04:22:28 +0000 From: "Z.q. Hou" To: "linux-pci@vger.kernel.org" , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "gustavo.pimentel@synopsys.com" , "jingoohan1@gmail.com" , "bhelgaas@google.com" , "robh+dt@kernel.org" , "mark.rutland@arm.com" , "shawnguo@kernel.org" , Leo Li , "lorenzo.pieralisi@arm.com" CC: "M.h. Lian" , "Z.q. Hou" Subject: [PATCH 3/4] ARM: dts: ls1021a: Remove num-lanes property from PCIe nodes Thread-Topic: [PATCH 3/4] ARM: dts: ls1021a: Remove num-lanes property from PCIe nodes Thread-Index: AQHVUMWMZFwmX+djskari+UjmO8phQ== Date: Mon, 12 Aug 2019 04:22:27 +0000 Message-ID: <20190812042435.25102-4-Zhiqiang.Hou@nxp.com> References: <20190812042435.25102-1-Zhiqiang.Hou@nxp.com> In-Reply-To: <20190812042435.25102-1-Zhiqiang.Hou@nxp.com> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: HK0PR03CA0060.apcprd03.prod.outlook.com (2603:1096:203:52::24) To DB8PR04MB6747.eurprd04.prod.outlook.com (2603:10a6:10:10b::31) authentication-results: spf=none (sender IP is ) smtp.mailfrom=zhiqiang.hou@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.17.1 x-originating-ip: [119.31.174.73] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: f6120ed1-5f45-4a36-acf5-08d71edcaf3f x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(5600148)(711020)(4605104)(1401327)(4618075)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328)(7193020);SRVR:DB8PR04MB5931; x-ms-traffictypediagnostic: DB8PR04MB5931: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:7219; x-forefront-prvs: 012792EC17 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(4636009)(346002)(136003)(376002)(39860400002)(396003)(366004)(189003)(199004)(6436002)(256004)(25786009)(66476007)(66556008)(66946007)(50226002)(2616005)(476003)(64756008)(186003)(11346002)(446003)(486006)(6486002)(66066001)(66446008)(53936002)(7416002)(71190400001)(6512007)(71200400001)(2501003)(8936002)(4326008)(8676002)(6116002)(3846002)(76176011)(52116002)(110136005)(54906003)(305945005)(7736002)(1076003)(81166006)(81156014)(86362001)(5660300002)(14454004)(26005)(478600001)(36756003)(2201001)(2906002)(386003)(6506007)(102836004)(99286004)(316002)(921003)(1121003);DIR:OUT;SFP:1101;SCL:1;SRVR:DB8PR04MB5931;H:DB8PR04MB6747.eurprd04.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A:1; received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: 84ZGIlDtgggiLlHjtCbZHUAcTdm/ALZLYTPfb+U6z2gMUycQMOzFv6C41Y/iQW5BImRlfWuE3Q1OxXLN7z5fWi4Lgt8hFrCoxh8jiSSoZSe4MntPyp159Ab1hkRl01IY5XcQDovbszG7jChfZKpHQal3M3/lRAumYwG1kAHQbRDZnxXOSW9NAWNTKsE88Xm+Cx8BliCMnJjW0GkmIbMAy9YcfJr3GqJK8tdjqP8OuFTXqV+Tiegn1y1mm8HEcMAmU1UbeKI2nij85PCU9CWM7U+28A3dAgnS4gwQ1UBfX2IMELg43NJVnLVhm0E3MLwdf9QU+dvB1QuoOHEpJW84t+UwQNFOG3ww+Kl7kqOXzHzgWGn67dXnoaIEyszBUyzAasUpQFJWSwolt/6hWq6CUpAJW1tJZaLa/XbCtKl1Lsg= Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: f6120ed1-5f45-4a36-acf5-08d71edcaf3f X-MS-Exchange-CrossTenant-originalarrivaltime: 12 Aug 2019 04:22:27.9847 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: 9YE+GaB51KNIVKKIiE7FMwazgRHCCWxWnBG6AYdBBRQb9/4dcYcDnCQL7r0DKNdeVMqYuVTLjnQ5e2bRpo6dCA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB8PR04MB5931 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Hou Zhiqiang On FSL Layerscape SoCs, the number of lanes assigned to PCIe controller is not fixed, it is determined by the selected SerDes protocol in the RCW (Reset Configuration Word), and the PCIe link training is completed automatically base on the selected SerDes protocol, and the link width set-up is updated by hardware. So the num-lanes is not needed to specify the link width. The current num-lanes indicates the max lanes PCIe controller can support up to, instead of the lanes assigned to the PCIe controller. This can result in PCIe link training fail after hot-reset. So remove the num-lanes to avoid set-up to incorrect link width. Signed-off-by: Hou Zhiqiang --- arch/arm/boot/dts/ls1021a.dtsi | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/arm/boot/dts/ls1021a.dtsi b/arch/arm/boot/dts/ls1021a.dts= i index 464df4290ffc..2f6977ada447 100644 --- a/arch/arm/boot/dts/ls1021a.dtsi +++ b/arch/arm/boot/dts/ls1021a.dtsi @@ -874,7 +874,6 @@ #address-cells =3D <3>; #size-cells =3D <2>; device_type =3D "pci"; - num-lanes =3D <4>; num-viewport =3D <6>; bus-range =3D <0x0 0xff>; ranges =3D <0x81000000 0x0 0x00000000 0x40 0x00010000 0x0 0x00010000 = /* downstream I/O */ @@ -899,7 +898,6 @@ #address-cells =3D <3>; #size-cells =3D <2>; device_type =3D "pci"; - num-lanes =3D <4>; num-viewport =3D <6>; bus-range =3D <0x0 0xff>; ranges =3D <0x81000000 0x0 0x00000000 0x48 0x00010000 0x0 0x00010000 = /* downstream I/O */ --=20 2.17.1