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 E0DB3CD4F2C for ; Thu, 13 Nov 2025 01:17:43 +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=Cg2JaE3fv+ghU7ROClHY7SyuqIoTVty2cTLXUgmt9Ho=; b=uWiHjC3JBv5lSNs8sDyIDPoHgt TWkueuTh/BYDJMf6lbb+aLU72dUEYp6FcRUlk6SWM82chc/Kc5z9Mfg7nPoO+V9X5n5dE2foh9084 IpyhChhIOGQ/hLPHdchuueZq5iGEx0H+t9KDROiOcxfs0TmDJV6I+E+97LPtyb0qeID4aWgpFXFjN VooJ4fIMd2ECNIIYuwB84X8kANyb9HhJqaKFoMASja/TBsnTRe5m+RN9NEJlW8+8AqBilpDtZF4Hc Thf+mAcGK5W/L2WBA3ZKDvComBMbA83Y73vs2QzFOcHWC7/P3dcBm86r9PIAGozqlve86IsSpGgTU xnkTsw7A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vJLxw-00000009i7f-3KX1; Thu, 13 Nov 2025 01:17:36 +0000 Received: from perceval.ideasonboard.com ([213.167.242.64]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vJLxr-00000009i57-3fsG for linux-arm-kernel@lists.infradead.org; Thu, 13 Nov 2025 01:17:34 +0000 Received: from pendragon.ideasonboard.com (unknown [213.216.211.176]) by perceval.ideasonboard.com (Postfix) with UTF8SMTPSA id 0737122B; Thu, 13 Nov 2025 02:15:29 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1762996530; bh=RJdzbBhfGhI09u51y8sQG5hOaq5lWDhaLzOTTvMVY8Q=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Q/6xIIdl2+JQnH0b/1SnFhwrRERG4EdyYO4RnR+B+HR25Z9jH8taSNwl4QQxb3AT7 i81CKgCdjf4exuXEhe/7ntYCfVL9wpSkHuXN7Pd69iUyYkdJKNhb09OPpUdYx1rsJH a4OKXAShC1CyNyyw8VREt/l66WqeJKDEhOceQXZE= Date: Thu, 13 Nov 2025 03:17:19 +0200 From: Laurent Pinchart To: "Russell King (Oracle)" Cc: Kieran Bingham , Oleksij Rempel , Andrew Lunn , devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, Daniel Scally , Stefan Klug , Conor Dooley , Fabio Estevam , Krzysztof Kozlowski , Pengutronix Kernel Team , Rob Herring , Sascha Hauer , Shawn Guo Subject: Re: [PATCH] arm64: dts: imx8mp-debix-model-a: Disable EEE for 1000T Message-ID: <20251113011719.GD9135@pendragon.ideasonboard.com> References: <20251026122905.29028-1-laurent.pinchart@ideasonboard.com> <176295131007.567526.3395425614344577792@ping.linuxembedded.co.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251112_171732_052967_43DB044A X-CRM114-Status: GOOD ( 22.48 ) 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 On Wed, Nov 12, 2025 at 12:56:22PM +0000, Russell King (Oracle) wrote: > On Wed, Nov 12, 2025 at 12:41:50PM +0000, Kieran Bingham wrote: > > Perhaps further complicating matters. > > > > I have a Debix Model A as well ... I'm in a different office to Laurent > > - and I believe EEE is enabled on my board/network switch. > > > > I do not get an interrupt storm. > > > > I'm not sure how this helps yet, - I don't know what to debug as I can't > > reproduce the issue! > > > > I can provide remote access to the board with ssh if that helps anyone > > who wants to look at something specific about my setup or run anything > > if anyone has ideas of what to check my side. > > > > Perhaps we can find some subtle difference between a working case and a > > non-working case... > > Thanks, that's interesting. I guess the next steps would be to try and > work out what's different between your two setups. > > - same board revision? > - same firmware/ATF? > - same kernel/modules? > - same type of link partner? (I suspect, given the cpu-pd-wait > interaction, isn't the problem.) I've provided the binaries I use for U-Boot (including TF-A) and the kernel to Kieran, he will test to see if they make a difference. I also tested replacing mainline TF-A (v2.13) with the downstream NXP version listed in the U-Boot i.MX8MP EVK documentation, and that didn't appear to make any difference. -- Regards, Laurent Pinchart