Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757100AbcJXKyo (ORCPT ); Mon, 24 Oct 2016 06:54:44 -0400 Received: from relmlor2.renesas.com ([210.160.252.172]:52971 "EHLO relmlie1.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752171AbcJXKyi (ORCPT ); Mon, 24 Oct 2016 06:54:38 -0400 X-IronPort-AV: E=Sophos;i="5.22,559,1449500400"; d="scan'208";a="223218060" From: Yoshihiro Shimoda To: Mathias Nyman , Babu Moger , "mathias.nyman@intel.com" , "gregkh@linuxfoundation.org" CC: "linux-usb@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: RE: [PATCH v2 RESEND] drivers/usb: Skip auto handoff for TI and RENESAS usb controllers Thread-Topic: [PATCH v2 RESEND] drivers/usb: Skip auto handoff for TI and RENESAS usb controllers Thread-Index: AQHSK+oXJhN/Z6RUxESSziFlJ/AgUqC3YksAgAAO42A= Date: Mon, 24 Oct 2016 10:54:33 +0000 Message-ID: References: <1477088705-202225-1-git-send-email-babu.moger@oracle.com> <580DDB16.5030906@linux.intel.com> In-Reply-To: <580DDB16.5030906@linux.intel.com> Accept-Language: ja-JP, en-US Content-Language: ja-JP X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=yoshihiro.shimoda.uh@renesas.com; x-originating-ip: [211.11.155.144] x-ms-office365-filtering-correlation-id: cc327d9b-a309-41a3-1efb-08d3fbfc2389 x-microsoft-exchange-diagnostics: 1;HK2PR06MB0548;7:R2CRU6epJmanSg5xG9eACPrHceM/Z0j9gKfgYn9ZjbA6bxCNkPgNSSEJ9OOBz5QeMZdJNSdpofuS5186lSDD/CI7SVZ9av4AKoGKhg6IqFZwnbQKL3MUbEOrh9t/8SpPeLaOC7OXFvSsCrRYgQK1zcGF0ymYnQuHYX3gkWnKyK5Cm540CSF07aRFHXBglotTuvrtg3l2GZdl+c543qrwvb+kcXoMRk9G9fQb3HU7mM+vVHc0xVwfojj/s/2Nji7F1bfBzeHjxA+zNxnWJwu2FUVsbo8foTJAT8eNeb9+l54lmOMjHVDG25bmAn/y7jZ2+66VFeRpDyKzF+VBaCM2zTeTi2YHc53SEDNFKM2PmxM=;20:Jcksx1pobN3iEO3jsh9DnPAR3gAI7Z19EO16cUg062GDOvjyspqsSfIoWLWmKZP5CUAqO/ecpV3oa44DzZ8VoKL93WOAZ+A596bw3m47GD4MIquMkSXtZSMmAw8ewG3ULvjCxYlhGRvwjtYdo+iUIKZJn2zyov7jTsVBbrTLtWw= x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:;SRVR:HK2PR06MB0548; x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:(146099531331640); x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(6040176)(601004)(2401047)(8121501046)(5005006)(10201501046)(3002001)(6055026);SRVR:HK2PR06MB0548;BCL:0;PCL:0;RULEID:;SRVR:HK2PR06MB0548; x-forefront-prvs: 0105DAA385 x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(6009001)(7916002)(24454002)(199003)(189002)(377454003)(102836003)(19580405001)(74316002)(4326007)(2906002)(3846002)(3660700001)(81156014)(8676002)(81166006)(7696004)(3280700002)(586003)(305945005)(189998001)(7846002)(7736002)(345774005)(5001770100001)(76176999)(54356999)(19580395003)(2501003)(50986999)(76576001)(2950100002)(97736004)(10400500002)(5002640100001)(122556002)(92566002)(9686002)(106116001)(33656002)(8936002)(106356001)(86362001)(87936001)(2201001)(105586002)(77096005)(66066001)(6116002)(101416001)(2900100001)(11100500001)(68736007)(5660300001);DIR:OUT;SFP:1102;SCL:1;SRVR:HK2PR06MB0548;H:HK2PR06MB0548.apcprd06.prod.outlook.com;FPR:;SPF:None;PTR:InfoNoRecords;A:1;MX:1;LANG:en; spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 X-OriginatorOrg: renesas.com X-MS-Exchange-CrossTenant-originalarrivaltime: 24 Oct 2016 10:54:33.2758 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 53d82571-da19-47e4-9cb4-625a166a4a2a X-MS-Exchange-Transport-CrossTenantHeadersStamped: HK2PR06MB0548 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by mail.home.local id u9OAsstj013454 Content-Length: 894 Lines: 27 Hi, > From: Mathias Nyman > Sent: Monday, October 24, 2016 6:58 PM > > On 22.10.2016 01:25, Babu Moger wrote: > > Never seen XHCI auto handoff working on TI and RENESAS cards. > > Eventually, we force handoff. This code forces the handoff > > unconditionally. It saves 5 seconds boot time for each card. > > > > Signed-off-by: Babu Moger > > Do the Renesas and TI controllers still advertise the extended capability > for the handoff? (XHCI_EXT_CAPS_LEGACY) > > Is this some known issue with these vendors controllers? Is there some documentation > about this, errata or anything? > > Adding Yoshihiro Shimoda, he might know about the Renesas controller. Thank you for adding me on this email. However, unfortunately I don't know the detail about Renesas PCIe xHCI controllers. (I know the xHCI controller of R-Car SoCs for now.) Best regards, Yoshihiro Shimoda