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 7D92AC5AD7B for ; Mon, 10 Aug 2026 21:12:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=4oSfONn5Yz63lyUzLtV+gfMtS9ynEzwvoGCshYVSCu4=; b=EfGiNhZ3KvTMW6qfI7EhkRk8AD s6q6i08K7DmxGIKufYDls1a4dmkTaCmZEKZRDFLXws9oj+TK8hqbQYkr2akP6geccIgT0uY79pIu2 kdrlDujKTVOfks0ZWl2PWgNuUb5O7yKn8kbIyt0n2WooQnkE2gmqHLca/g2e7DN6SdJ5YUw2Fh80S +UG5JRmBd42kjzkLVTHA8Fo2nmisrhh7GFSNaAkqK2+NBElfqDc0DFjxwirA8Ba46+N90VF40hZRe gYsJuU1u8yZz+fwDdA6olE+ifeS+PJy1hOAqyhdhZwH1txBYRe0gdoFQ5+l5LSuKOshxWXswDSDNK CDzFqQFA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wtXIB-0000000CsyN-0pza; Mon, 10 Aug 2026 21:12:19 +0000 Received: from mail11.truemail.it ([217.194.8.81]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wtXI6-0000000CsxS-0bF6 for linux-arm-kernel@lists.infradead.org; Mon, 10 Aug 2026 21:12:17 +0000 Received: from francesco-nb (93-49-2-63.ip317.fastwebnet.it [93.49.2.63]) by mail11.truemail.it (Postfix) with ESMTPA id 6FA341F8D1; Mon, 10 Aug 2026 23:12:10 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dolcini.it; s=default; t=1786396331; bh=4oSfONn5Yz63lyUzLtV+gfMtS9ynEzwvoGCshYVSCu4=; h=From:To:Subject; b=XWTnSgQBHutL2fKLqJf4aoRhkbR7qWiLGZcae4flULuRgn7Tb2aM5hav9mSUzoGMU ur+BfXUM/0J4oYdc1GRs2qSoVMPymIeTZ5toEAc21RekgM4zhNRRR7/uOC6hjYqu3q 72IXMHiR5hqiDLOghTTwNzGbiwY2Hcyi2zZda7RWS2vA75r3FRiBi7MY18UtAqE7j+ ld5sGLfTehy8Q7Eq18+tc8jCdRw0HvThS/I611mRCR+vaZPuxMIEQcH9AtxnX59u4t 2+dnSc9VXLRFqg0Sd3GPt5u2tKSPrbXmvA+ZACLkKpDVJanaGlD6+HotDsa208IQKC OLBZwUxNuPlSQ== Date: Mon, 10 Aug 2026 23:12:09 +0200 From: Francesco Dolcini To: Leonardo Costa Cc: hongxing.zhu@nxp.com, l.stach@pengutronix.de, lpieralisi@kernel.org, kwilczynski@kernel.org, mani@kernel.org, robh@kernel.org, bhelgaas@google.com, Frank.Li@nxp.com, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, regressions@lists.linux.dev, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, imx@lists.linux.dev, linux-kernel@vger.kernel.org, leonardo.costa@toradex.com, francesco@dolcini.it Subject: Re: [REGRESSION] mainline/master: PCI link creation fails on Apalis iMX6 Message-ID: <20260810211209.GB4821@francesco-nb> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260810_141216_043485_934A1BF9 X-CRM114-Status: UNSURE ( 8.28 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hello all, On Mon, Aug 10, 2026 at 02:54:45PM -0300, Leonardo Costa wrote: > We are seeing a regression on Apalis iMX6 where connected PCI device > links fail to come up at initialization, as shown below. The issue is > not on the devices' physical connection, as they worked properly on v7.1 > and are working on other stable kernel versions. just to make this more clear. 610fa91d9863 ("PCI: imx6: Assert PERST# before enabling regulators") introduced a regression that prevented the boot. because of that we were not able to run any of our test in our CI/CD commit 7678e81498e2 ("PCI: imx6: Fix i.MX6Q/DL boot hang caused by improper PHY power sequencing") fixes the boot issue, but now PCIe is not longer working Francesco