From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DCE68314A6F; Thu, 16 Jul 2026 16:41:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784220072; cv=none; b=HEKvn82acLIDiN1SGR0bdLfLzq1wzxWHXr3bDJCwSK+mfRRu7ZrY6/R8PRyyliDt8QMvHSMpgSKJaVZ49sFdfF+Jiw58/9gpRR42Xe0kD6JxQFLoPmyTTh4mdhnuajkoG1ao1fMp2Mj7ahI6FFK0ZJXJJXcgqGWq2kpYlyOp/UM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784220072; c=relaxed/simple; bh=Qs2htlUW0dPVM84nKGOGKjeZztBuqvLtB5UPJmqhRJk=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition:In-Reply-To; b=Vr7a+KQ7YQxEXnoYf62OyiNWeDciiqqarZ3glgM6mqM/MpRNOoX52oAgLMyVuaC4Lpa7kXGV3P6MEv8qTDZ1GlmQ4rM667xTCAAQl10bPlrJCh3eBlY1yvLM0ucI9/HzcV3O8tCDtRajHgZz1g/vhdT1d1sSWLXzrWJgEN3yu+M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=MT+Yp0fX; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="MT+Yp0fX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D8EB71F000E9; Thu, 16 Jul 2026 16:40:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784220060; bh=88UMF+eU7HiAKdmWyHdi8ruaFAzo0R90LbSMbDbrqWc=; h=Date:From:To:Cc:Subject:In-Reply-To; b=MT+Yp0fXYwTGnaSkIHjy79XOarEsKn3ydw7f9xPZP6R/37qfbxtN4MeTXYox9p9mm K81jwZd8nnHX6DbVK8xWFQ06ybwVlgK7Wd01X+hLha4h6NV8o0Hu1NTwINky05Bvlx Em7qhBhd4C6rfQqFHitDWmbAUonbKPS5161cyz1AENMb/2YDUL/VDxFd18Y4C1YhK7 TAqft2VkXHf0nivVmzHnA0MqF50dHqGpudxL2b83oEPFdHMPqdkMzvj+mP7Ml4h30n sZMdqNnYIl/3f4PR1417cMt5bxFKYUTRuo1kYyj1B6YlEPoi/lpUzElPRW4w9G8tPw zCTwHvxfQaGxw== Date: Thu, 16 Jul 2026 11:40:58 -0500 From: Bjorn Helgaas To: "Hongxing Zhu (OSS)" Cc: Leonardo Costa , "robh@kernel.org" , "krzk+dt@kernel.org" , "conor+dt@kernel.org" , Frank Li , "s.hauer@pengutronix.de" , "kernel@pengutronix.de" , "festevam@gmail.com" , "leonardo.costa@toradex.com" , "devicetree@vger.kernel.org" , "imx@lists.linux.dev" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "regressions@lists.linux.dev" , Sherry Sun , Manivannan Sadhasivam , Hongxing Zhu , "linux-pci@vger.kernel.org" Subject: Re: [REGRESSION] mainline/master: Apalis iMX6 no longer boots Message-ID: <20260716164058.GA16414@bhelgaas> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Thu, Jul 16, 2026 at 02:15:42AM +0000, Hongxing Zhu (OSS) wrote: > > On Mon, Jun 29, 2026 at 11:34:32AM -0300, Leonardo Costa wrote: > > > We are seeing a regression on Apalis iMX6 where the kernel > > > doesn't boot in the newest v7.2-rc1 (it was working before, in > > > v7.1). The device tree being used is the imx6q-apalis-eval.dtb. > > > The kernel configuration > > > used is the one shown below: > ... > > Can somebody confirm that reverting 610fa91d9863 fixes this > > regression, or at least that 610fa91d9863^ works and 610fa91d9863 > > fails? > > Sorry for this severe regression. I have posted a fix that has been > tested on my i.MX6Q SabreSD board: > > https://lore.kernel.org/imx/20260708035928.580236-2-hongxing.zhu@oss.nxp.com/ My question was whether somebody had actually bisected to 610fa91d9863 ("PCI: imx6: Assert PERST# before enabling regulators"). I don't see anything specific on the mailing list, so I don't know how 610fa91d9863 got blamed for the regression. https://linux-regtracking.leemhuis.info/regzbot/mainline/ lists this as a regression caused by 610fa91d9863, which means we need (1) the details to prove that 610fa91d9863 actually caused it and (2) a tested revert or fix.