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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AFD0DC433EF for ; Thu, 17 Mar 2022 09:01:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231637AbiCQJCm (ORCPT ); Thu, 17 Mar 2022 05:02:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34802 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231635AbiCQJCk (ORCPT ); Thu, 17 Mar 2022 05:02:40 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 265761D08C4; Thu, 17 Mar 2022 02:01:25 -0700 (PDT) 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 E42551476; Thu, 17 Mar 2022 02:01:24 -0700 (PDT) Received: from e123427-lin.arm.com (unknown [10.57.43.22]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 222053F766; Thu, 17 Mar 2022 02:01:23 -0700 (PDT) From: Lorenzo Pieralisi To: Richard Zhu , bhelgaas@google.com, l.stach@pengutronix.de Cc: Lorenzo Pieralisi , linux-imx@nxp.com, linux-arm-kernel@lists.infradead.org, kernel@pengutronix.de, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org Subject: Re: [PATCH v2] PCI: imx6: Assert i.MX8MM CLKREQ# even if no device present Date: Thu, 17 Mar 2022 09:01:18 +0000 Message-Id: <164750763778.14330.2374977117097314236.b4-ty@arm.com> X-Mailer: git-send-email 2.31.0 In-Reply-To: <1645672013-8949-1-git-send-email-hongxing.zhu@nxp.com> References: <1645672013-8949-1-git-send-email-hongxing.zhu@nxp.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On Thu, 24 Feb 2022 11:06:53 +0800, Richard Zhu wrote: > The CLKREQ# signal is an open drain, active low signal that is driven > low by the remote Endpoint device. But it might not be driven low if no > Endpoint device is connected. > > On i.MX8MM PCIe, phy_init() may fail and system boot may hang if no > Endpoint is connected to assert CLKREQ#. > > [...] Applied to pci/imx6, thanks! [1/1] PCI: imx6: Assert i.MX8MM CLKREQ# even if no device present https://git.kernel.org/lpieralisi/pci/c/45514f78c6 Thanks, Lorenzo