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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 1827EC6FD18 for ; Fri, 31 Mar 2023 13:29:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc: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=T5ZkuFdi4vl6HhziAbOsV5YtPfcT5BmahCoRY9THDyo=; b=bYPgORgS+oHf1T cID39+nqRVfY1DWnzJ9pl6ahTK3eB6bLp1jPb6sd+tP818Caoql68NMgOq2TzclDmYecCg5o6eGN9 XMvoLg2WUn7kvJVv/8g1NwT8AogZy/wwZr7EAVwNG3jSFGg+dhyuyIvMg/wrj6O/siDoq1FlV8/Lp 3fjjIK+kBr4bS1oVWzlkMpJV29ACv1tjuIE/tYSqv/hpqzhA7miDpJZqDYxN55m/xLvPha26qdLsO vzI6iaIY3T1Py5wW8Ej/24ZDtZkYBNh/EemGRw0BXUqkfdVp25+JuUlE04EbgP5jdWmbxL+UsanAM KBXZXTnhf4ORefI3q/9A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1piEov-007X21-1c; Fri, 31 Mar 2023 13:29:33 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1piEor-007X0G-2e; Fri, 31 Mar 2023 13:29:30 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 1C07C62927; Fri, 31 Mar 2023 13:29:29 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BB38BC433D2; Fri, 31 Mar 2023 13:29:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1680269368; bh=Y5YtUrKC2+Ye8jz8W+QdmzBteBT9mONICvBXXC3yYHk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=AGeBz/Int3Z/Zz/BhdkATkoaS/vmn66coKC0qxFAEUuShOdShOQKdxnRbgRwgWXuP enrXY9u311Y4S/am4tiZepiyNmr9fI0XIvyMK1tKI7nHP+4AgPiZfSjl43U2wS1e5a FTT6TLLUp86Ak/o1diplnsOAey/rEmvlJSgBZnsPRgb04+pAoT4I7KA4oGJiXQTsDz DPdIAz6qxbWiGe854xmxL2gjF56IMPhEWC2BXszYt2MgZFUewbH51qjo+FLoTUBLZw O+OuNXLNclsYsM4/oWRUceJyBrgVxV5uXhtmyjHLydRxv7eNxdJ09u4u1C9ToLKhAE xw+O3wbu2ejHA== Date: Fri, 31 Mar 2023 18:59:24 +0530 From: Vinod Koul To: Michael Grzeschik Cc: linux-arm-kernel@lists.infradead.org, fabrice.gasnier@foss.st.com, linux-phy@lists.infradead.org, kishon@kernel.org, mcoquelin.stm32@gmail.com, alexandre.torgue@foss.st.com, error27@gmail.com, kernel@pengutronix.de, linux-stm32@st-md-mailman.stormreply.com, amelie.delaunay@foss.st.com Subject: Re: [PATCH v2] phy: stm32-usphyc: add 200 to 300 us delay to fix timeout on some machines Message-ID: References: <1869feff-06b1-17f1-4628-b433c858ad79@foss.st.com> <20230227151318.1894938-1-m.grzeschik@pengutronix.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20230227151318.1894938-1-m.grzeschik@pengutronix.de> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230331_062929_897418_22035C39 X-CRM114-Status: UNSURE ( 8.98 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org On 27-02-23, 16:13, Michael Grzeschik wrote: > An minimum udelay of 200 us seems to be necessary on some machines. After > the setup of the pll, which needs about 100 us to be locked there seem > to be additional 100 us to get the phy really functional. Without this > delay the usb runs not functional. With this additional short udelay > this issue was not reported again. Applied, thanks -- ~Vinod -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy