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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4E126C433F5 for ; Fri, 7 Jan 2022 10:22:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346680AbiAGKW4 (ORCPT ); Fri, 7 Jan 2022 05:22:56 -0500 Received: from foss.arm.com ([217.140.110.172]:37994 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232237AbiAGKWy (ORCPT ); Fri, 7 Jan 2022 05:22:54 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 0E60C13D5; Fri, 7 Jan 2022 02:22:54 -0800 (PST) Received: from e123427-lin.arm.com (unknown [10.57.36.216]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id E362C3F66F; Fri, 7 Jan 2022 02:22:51 -0800 (PST) From: Lorenzo Pieralisi To: =?UTF-8?q?Krzysztof=20Wilczy=C5=84ski?= , Jianjun Wang , Ryder Lee , Bjorn Helgaas , qizhong cheng Cc: Lorenzo Pieralisi , =?UTF-8?q?Pali=20Roh=C3=A1r?= , linux-arm-kernel@lists.infradead.org, chuanjia.liu@mediatek.com, linux-mediatek@lists.infradead.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3] PCI: mediatek: Assert PERST# for 100ms for power and clock to stabilize Date: Fri, 7 Jan 2022 10:22:46 +0000 Message-Id: <164155095225.6775.655179565397700923.b4-ty@arm.com> X-Mailer: git-send-email 2.31.0 In-Reply-To: <20211227133110.14500-1-qizhong.cheng@mediatek.com> References: <20211227133110.14500-1-qizhong.cheng@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 27 Dec 2021 21:31:10 +0800, qizhong cheng wrote: > Described in PCIe CEM specification sections 2.2 (PERST# Signal) and > 2.2.1 (Initial Power-Up (G3 to S0)). The deassertion of PERST# should > be delayed 100ms (TPVPERL) for the power and clock to become stable. > > Applied to pci/mediatek, thanks! [1/1] PCI: mediatek: Assert PERST# for 100ms for power and clock to stabilize https://git.kernel.org/lpieralisi/pci/c/65ace9a85f Thanks, Lorenzo