From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) (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 9CCC010F2 for ; Thu, 13 Nov 2025 01:17:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.167.242.64 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762996654; cv=none; b=r/eT0cJI7YwXfZsjE7VLZUx+XhjhCWO9u9NEexROvcZSaNMDxQwbyP9ntepQa9SCpQ31Wy62cmE3dnLx7aWkpucdqVVn6hilSSYjJG2OLs0/D/1HMIgD6QIB3aC0DZAVWien0VT5TPyqzp7yYl1wLXIh0NDfURyfx7IZ4ysF3b8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762996654; c=relaxed/simple; bh=RJdzbBhfGhI09u51y8sQG5hOaq5lWDhaLzOTTvMVY8Q=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=lKLXsipnManxi53sjrYW/ApnH56H3aB82kRVHKnDnL9cq+DjhaACvG8ZTBJd4YGRQZVSz7e8KPdx3QMtf4G1+uJ+3Tv3dcbhtiho/JSQYRybjVZuJwVaIWN+Eou9eYthyCPUtDJ3cC8MBUmQlC+vBSjYkb4Qkwuxev3LszlGEXU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ideasonboard.com; spf=pass smtp.mailfrom=ideasonboard.com; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b=Q/6xIIdl; arc=none smtp.client-ip=213.167.242.64 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="Q/6xIIdl" 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> Precedence: bulk X-Mailing-List: imx@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: 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