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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 4972AC4708F for ; Wed, 2 Jun 2021 20:11:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3000E613EE for ; Wed, 2 Jun 2021 20:11:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229721AbhFBUNH (ORCPT ); Wed, 2 Jun 2021 16:13:07 -0400 Received: from coyote.holtmann.net ([212.227.132.17]:58228 "EHLO mail.holtmann.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229718AbhFBUNF (ORCPT ); Wed, 2 Jun 2021 16:13:05 -0400 Received: from smtpclient.apple (p4fefc9d6.dip0.t-ipconnect.de [79.239.201.214]) by mail.holtmann.org (Postfix) with ESMTPSA id 77179CED0B; Wed, 2 Jun 2021 22:19:18 +0200 (CEST) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.100.0.2.22\)) Subject: Re: [PATCH v3] Bluetooth: btusb: fix bt fiwmare downloading failure issue for qca btsoc. From: Marcel Holtmann In-Reply-To: <1622541430-17072-1-git-send-email-zijuhu@codeaurora.org> Date: Wed, 2 Jun 2021 22:11:20 +0200 Cc: Johan Hedberg , Luiz Augusto von Dentz , linux-kernel@vger.kernel.org, linux-bluetooth@vger.kernel.org, linux-arm-msm@vger.kernel.org, bgodavar@codeaurora.org, c-hbandi@codeaurora.org, hemantg@codeaurora.org, mka@chromium.org, rjliao@codeaurora.org, tjiang@codeaurora.org Content-Transfer-Encoding: 7bit Message-Id: References: <1622541430-17072-1-git-send-email-zijuhu@codeaurora.org> To: Zijun Hu X-Mailer: Apple Mail (2.3654.100.0.2.22) Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Hi Zijun, > This is btsoc timing issue, after host start to downloading bt firmware, > ep2 need time to switch from function acl to function dfu, so host add > 20ms delay as workaround. > > Signed-off-by: Tim Jiang > --- > drivers/bluetooth/btusb.c | 5 +++++ > 1 file changed, 5 insertions(+) patch has been applied to bluetooth-next tree. Regards Marcel