From owner-freebsd-hackers@freebsd.org Mon Jan 13 19:48:31 2020 Return-Path: Delivered-To: freebsd-hackers@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 1644E1EA594 for ; Mon, 13 Jan 2020 19:48:31 +0000 (UTC) (envelope-from wojtek@puchar.net) Received: from puchar.net (puchar.net [194.1.144.90]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 47xPK95kCpz45sq for ; Mon, 13 Jan 2020 19:48:29 +0000 (UTC) (envelope-from wojtek@puchar.net) Received: Received: from 127.0.0.1 (localhost [127.0.0.1]) by puchar.net (8.15.2/8.15.2) with ESMTPS id 00DJmOUL058082 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Mon, 13 Jan 2020 20:48:24 +0100 (CET) (envelope-from puchar-wojtek@puchar.net) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=puchar.net; s=default; t=1578944904; bh=Oz7WN1T/dqhXJxP7l0/+HKtAyGo/GM/1brmAWdjj4hQ=; h=Date:From:To:cc:Subject:In-Reply-To:References; b=TES5ZGIADNZDPwRquEGV8KXi5PruLwV1sUmll+jDW3sBufg/63exPnIH5VD+kAtWZ j4sb+NHhP2Uc0VD7I+jA504oUoKcx/RUvpSllyKnSbT3ng8cXzFB8Cfx3aGVQpss8w qWnBTxWg5P9fT7JIu1q+pjnmbTDqcnR2sg90lI6E= Received: from localhost (puchar-wojtek@localhost) by puchar.net (8.15.2/8.15.2/Submit) with ESMTP id 00DJmNOX058079; Mon, 13 Jan 2020 20:48:24 +0100 (CET) (envelope-from puchar-wojtek@puchar.net) Date: Mon, 13 Jan 2020 20:48:23 +0100 (CET) From: Wojciech Puchar To: Hans Petter Selasky cc: Wojciech Puchar , freebsd-hackers@freebsd.org Subject: Re: raspberry pi zero and SLOW USB HID In-Reply-To: <9a1a3901-ce03-d445-dd9e-bbd775f5288a@selasky.org> Message-ID: References: <9f8ae63f-abe5-27d9-e6bf-3d0cc1d3d4f3@selasky.org> <9a1a3901-ce03-d445-dd9e-bbd775f5288a@selasky.org> User-Agent: Alpine 2.20 (BSF 67 2015-01-07) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed X-Rspamd-Queue-Id: 47xPK95kCpz45sq X-Spamd-Bar: ---- Authentication-Results: mx1.freebsd.org; dkim=fail (rsa verify failed) header.d=puchar.net header.s=default header.b=TES5ZGIA; dmarc=none; spf=pass (mx1.freebsd.org: domain of wojtek@puchar.net designates 194.1.144.90 as permitted sender) smtp.mailfrom=wojtek@puchar.net X-Spamd-Result: default: False [-4.10 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; R_SPF_ALLOW(-0.20)[+mx]; R_DKIM_REJECT(1.00)[puchar.net:s=default]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[puchar.net]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; TO_DN_SOME(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DKIM_TRACE(0.00)[puchar.net:-]; RCVD_IN_DNSWL_NONE(0.00)[90.144.1.194.list.dnswl.org : 127.0.10.0]; IP_SCORE(-2.80)[ip: (-7.41), ipnet: 194.1.144.0/24(-3.70), asn: 43476(-2.96), country: PL(0.07)]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_TLS_LAST(0.00)[]; ASN(0.00)[asn:43476, ipnet:194.1.144.0/24, country:PL]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_COUNT_TWO(0.00)[2] X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 13 Jan 2020 19:48:31 -0000 > > #define DWC_OTG_HOST_TIMER_RATE 10 /* ms */ can i change this to 1? > > Which is because we want save a little power polling the DWC OTG. > > To avoid this: > > USB transfers must be double buffered! That means you must submit two > IN-endpoint jobs, instead of just one. Then the driver will understand there > is more work to do, and not go to idlewait! > > --HPS > >