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 Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8FB7BC71136 for ; Mon, 16 Jun 2025 07:24:59 +0000 (UTC) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 00DA181E18; Mon, 16 Jun 2025 09:24:58 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=quarantine dis=none) header.from=kernel.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="K7rMM2Sz"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id 3609B82B00; Mon, 16 Jun 2025 09:24:56 +0200 (CEST) Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 1EBA181E06 for ; Mon, 16 Jun 2025 09:24:54 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=quarantine dis=none) header.from=kernel.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=mkorpershoek@kernel.org Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 7D9D44A47B; Mon, 16 Jun 2025 07:24:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 04EB1C4CEEA; Mon, 16 Jun 2025 07:24:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1750058692; bh=zI5Mp0mW9gao/4U0ZclF3iWGIOb6ScTKb1rrsHQCsz0=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=K7rMM2Sz3NtPk03hn/Gr1GgfTRyt50kPZvsEeB5YNJjjQ895IjXjkWdLWjOycDgJ9 L2wFjRMH3fpdvKA25U5r8rrBskm/PpviVNx1wNDoDPMsgeTX2aTfs1LMKROV1t5xGr yeHMaYpzORKVB6ZWcIQnSfFsSChSUV4kZA/Zi6Bwj8b7pqUKhxSUdhDLX9oEMm0geo 3b+R+PBV2G7ru/mV3PrGCLWlFRnDeOJJR/rb2tGxJ0F2A847bBaEB+kGn9vycFAH9S SYiZrtfAf0n02luZhyAehaYsLrngGIiDnG8WekarhARKh6b3s7yGGhAi+0B8fUm1vr DlAypmfhptKIg== From: Mattijs Korpershoek To: Zixun LI , Mattijs Korpershoek Cc: Eugen Hristev , Lukasz Majewski , Marek Vasut , Tom Rini , Mihai Sain , u-boot@lists.denx.de Subject: Re: [PATCH] usb: gadget: atmel: reliably generate disconnect by disabling controller instead of toggling PULLD_DIS In-Reply-To: References: <20250602-pullup-v1-1-edcde5a050dd@hifiphile.com> <87iklbuddu.fsf@kernel.org> <87tt4k3sit.fsf@kernel.org> Date: Mon, 16 Jun 2025 09:24:49 +0200 Message-ID: <878qlsgncu.fsf@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean On Fri, Jun 13, 2025 at 16:45, Zixun LI wrote: > On Fri, Jun 13, 2025 at 11:22=E2=80=AFAM Mattijs Korpershoek > wrote: >> >> >> Mihai, Zixun, do you have any update on case No.01589331 ? >> >> I'd like to pick this up and some point so please keep me informed. >> >> Thank you >> Mattijs >> > > Hi Mattijs, > > The case was reported in early May and MCHP have also observed the > missing of detach event on host. > > My latest measure shows a differential signal level about +-350mV > between DP&DM lines when > DETACH and PULLD_DIS bits are 1, much lower than the detachment > threshold of 625mV from > USB 2.0 specification Table 7.3. > > From my view the patch can be picked, even on an unaffected family it > won't have side effects. > Unless one day we decide to implement SAM9RL and SAM9G45 errata then > it needs to be retested. Ok, I will apply it. Since it's a bit late in the release cycle, I'll send this out for -next. Thanks again for your contribution! Mattijs > > Best Regards, > Zixun