[{"id":1764718,"web_url":"http://patchwork.ozlabs.org/comment/1764718/","msgid":"<97407ac5-e4d4-13e0-beb7-039a2db929e0@denx.de>","list_archive_url":null,"date":"2017-09-07T13:21:50","subject":"Re: [U-Boot] [PATCH 2/5] dm: usb: xhci: Implement\n\tget_max_xfer_size() operation","submitter":{"id":13,"url":"http://patchwork.ozlabs.org/api/people/13/","name":"Stefan Roese","email":"sr@denx.de"},"content":"On 07.09.2017 15:13, Bin Meng wrote:\n> xHCD allocates one segment which includes 64 TRBs for each endpoint\n> and the last TRB in this segment is configured as a link TRB to form\n> a TRB ring. Each TRB can transfer up to 64K bytes, however data\n> buffers referenced by transfer TRBs shall not span 64KB boundaries.\n> Hence the maximum number of TRBs we can use in one transfer is 62.\n> \n> Signed-off-by: Bin Meng \n\nTested-by: Stefan Roese \n\nThank,\nStefan","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":"ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=lists.denx.de\n\t(client-ip=81.169.180.215; helo=lists.denx.de;\n\tenvelope-from=u-boot-bounces@lists.denx.de;\n\treceiver=)","Received":["from lists.denx.de (dione.denx.de [81.169.180.215])\n\tby ozlabs.org (Postfix) with ESMTP id 3xp1Mh3lyvz9sNd\n\tfor ;\n\tThu, 7 Sep 2017 23:22:24 +1000 (AEST)","by lists.denx.de (Postfix, from userid 105)\n\tid 30500C21EC4; Thu, 7 Sep 2017 13:22:20 +0000 (UTC)","from lists.denx.de (localhost [IPv6:::1])\n\tby lists.denx.de (Postfix) with ESMTP id 6272BC21D88;\n\tThu, 7 Sep 2017 13:22:18 +0000 (UTC)","by lists.denx.de (Postfix, from userid 105)\n\tid BA57CC21E27; Thu, 7 Sep 2017 13:22:03 +0000 (UTC)","from mx2.mailbox.org (mx2.mailbox.org [80.241.60.215])\n\tby lists.denx.de (Postfix) with ESMTPS id 720B6C21EC6\n\tfor ; Thu, 7 Sep 2017 13:22:03 +0000 (UTC)","from smtp1.mailbox.org (smtp1.mailbox.org [80.241.60.240])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256\n\tbits)) (No client certificate requested)\n\tby mx2.mailbox.org (Postfix) with ESMTPS id 06DA94895D;\n\tThu, 7 Sep 2017 15:22:03 +0200 (CEST)","from smtp1.mailbox.org ([80.241.60.240])\n\tby spamfilter01.heinlein-hosting.de (spamfilter01.heinlein-hosting.de\n\t[80.241.56.115]) (amavisd-new, port 10030)\n\twith ESMTP id rsgG_3-31_Yk; Thu, 7 Sep 2017 15:21:51 +0200 (CEST)"],"X-Spam-Checker-Version":"SpamAssassin 3.4.0 (2014-02-07) on lists.denx.de","X-Spam-Level":"","X-Spam-Status":"No, score=-0.7 required=5.0 tests=RCVD_IN_DNSWL_LOW\n\tautolearn=unavailable autolearn_force=no version=3.4.0","X-Virus-Scanned":"amavisd-new at heinlein-support.de","To":"Bin Meng , Marek Vasut ,\n\tMasahiro Yamada ,\n\tSimon Glass ,\n\tU-Boot Mailing List ","References":"<1504790001-24715-1-git-send-email-bmeng.cn@gmail.com>\n\t<1504790001-24715-2-git-send-email-bmeng.cn@gmail.com>","From":"Stefan Roese ","Message-ID":"<97407ac5-e4d4-13e0-beb7-039a2db929e0@denx.de>","Date":"Thu, 7 Sep 2017 15:21:50 +0200","MIME-Version":"1.0","In-Reply-To":"<1504790001-24715-2-git-send-email-bmeng.cn@gmail.com>","Content-Language":"en-US","Subject":"Re: [U-Boot] [PATCH 2/5] dm: usb: xhci: Implement\n\tget_max_xfer_size() operation","X-BeenThere":"u-boot@lists.denx.de","X-Mailman-Version":"2.1.18","Precedence":"list","List-Id":"U-Boot discussion ","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Content-Transfer-Encoding":"base64","Content-Type":"text/plain; charset=\"utf-8\"; Format=\"flowed\"","Errors-To":"u-boot-bounces@lists.denx.de","Sender":"\"U-Boot\" "}}]