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=0.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_ADSP_ALL, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no 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 4A078C43603 for ; Mon, 16 Dec 2019 19:42:44 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id F106821582 for ; Mon, 16 Dec 2019 19:42:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="aFOyLBIg"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=megous.com header.i=@megous.com header.b="aZ/B4DgI" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F106821582 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=megous.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=lFaex4MalzoXzH7C64wx6hdxmXKK+XQQMk+hb9k910c=; b=aFOyLBIgietgd7 KPPST0UAZlLqoFlYGI59yEAqpIBC0ppAwfYmn9ZKpKQsCneuqQBkMRw9666r006ks+ipv0PX7Hm1F U5CpDz8NzHbzOxdzjMR+J7pa1TQUCCsnxRMwNgBP3UxYJ6SmoVfQB6VLbb3iSRBfNgx15i7y1t2ER XdleUaQQE/iHhlK4HnviecdXA4gtlZfYPxP7zCNgmsBar4pmru/a4Bscq4KI+cks2120o+ceTltOF BCsv8T7Wx/CYNpU1rPyM+IpB47Xq9B8KfhyZunCVIMbR8iKLMc8l/eBGUrU5fH5z9T8GtSH203mlv zTSn3PAt4SZV7hAuHm4A==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1igwGQ-0004Pa-Ud; Mon, 16 Dec 2019 19:42:42 +0000 Received: from vps.xff.cz ([195.181.215.36]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1igwGN-0004Or-7n for linux-arm-kernel@lists.infradead.org; Mon, 16 Dec 2019 19:42:41 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=megous.com; s=mail; t=1576525356; bh=qZuiZ+B2txWHdnCJbb77EA33RIGkpS7YWruV8b0DAEk=; h=Date:From:To:Cc:Subject:References:X-My-GPG-KeyId:From; b=aZ/B4DgIvLt+4aaqo6PW8tETJ+fycJcGYVVFUxHsx/AfC6OOMRizxH27pDDUP644k 1cOMqMhNYVyZVh7O6KqMYbLEjdS2oE1NxlNwN2g3xmryP3HkAxAodtUAuc21RA9y6q IJvQWn1kZez0vnGypmnYdMqa0kKHKePwCZ/aLZ8Y= Date: Mon, 16 Dec 2019 20:42:35 +0100 From: =?utf-8?Q?Ond=C5=99ej?= Jirman To: Stefan Wahren Subject: Re: [PATCH V4 01/10] bluetooth: hci_bcm: Fix RTS handling during startup Message-ID: <20191216194235.4pq2xpfl7nz3p55w@core.my.home> Mail-Followup-To: Stefan Wahren , Marcel Holtmann , Johan Hedberg , Florian Fainelli , linux-bluetooth@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Nicolas Saenz Julienne References: <1570375708-26965-1-git-send-email-wahrenst@gmx.net> <1570375708-26965-2-git-send-email-wahrenst@gmx.net> <61789264-a4c2-ac85-9d74-d186213ec70a@gmx.net> <20191216132509.ofqcdpwxsd7324ql@core.my.home> <6f05f4d8-fa84-ae81-ac4f-00ab12fabeea@gmx.net> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <6f05f4d8-fa84-ae81-ac4f-00ab12fabeea@gmx.net> X-My-GPG-KeyId: EBFBDDE11FB918D44D1F56C1F9F0A873BE9777ED X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191216_114239_597574_692F86A0 X-CRM114-Status: GOOD ( 11.30 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Florian Fainelli , Johan Hedberg , Marcel Holtmann , linux-bluetooth@vger.kernel.org, Nicolas Saenz Julienne , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hello Stefan, On Mon, Dec 16, 2019 at 07:28:04PM +0100, Stefan Wahren wrote: > Hi Ondrej, > = > sorry, i don't have access to a Orange Pi 3. > = > I looked at a=A0 AP6256 datasheet [1], but i couldn't find any helpful > information about flow control during power up. > = > Are you able to analyze this issue more further before we revert this pat= ch? I'd like to, but I'll not be able to attach logic probe to the AP6256 module. It's too fine pitch for soldering. I may try setting CTS/RTS to gpio/input mode and grab the capture of the GPIO port states in time to see what's happening during probe of bt_bcm module. I don't really understand what effect your patch is supposed to have on the CTS/RTS lines during power up from the commit description. Can you please explain it more concretely? I'll be able to get to playing with this after the holidays. > I would like to know if this is some kind of timing issue, since in > patch "bluetooth: hci_bcm: Give more time to come out of reset" you > introduced a huge power on delay. I wouldn't mind if we could get rid of that. > Meanwhile i will play with modifications of original patch on the > Raspberry Pi 4 and come back to you. thank you, o. > Thanks > Stefan > = > [1] - > http://www.sparklan.com/p2-products-detail.php?PKey=3D4984FVukjcpylzifQiM= -TGFE-IKXD--BCwf4P15KfrU&AP6256 > = _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel