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 5867733F9 for ; Mon, 27 Oct 2025 10:31:23 +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=1761561085; cv=none; b=lzUcrjszFMdksDnx3c3B9hJjPbB1M485oPJCGJs9c4+RWFPz1vrO5hvnt1T7WFXmOM/5+SUF/1C7mkO7GJ3Zplqg4+izH53VPHLHwXwVZKzcRnX+Tb6MpNer0GPafh4Q2/eMHgRVkklmyWfSYfKprVjBAOZghBKxHhPDXP24To8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761561085; c=relaxed/simple; bh=woR0YkWOLoOVnkusOQvb+uOUj+GPQRpu6GLsFacG4SU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=YXdSQhuZMB1JIc9/8wabRQovSNW2nwDfrKUztkBhHkH6ov+GhuWy+GNURtPou91tKzhOM/DblEI+zhEIf7hkFkCuXR6embTfovRmV/Qu7mtrKLJTP/4byKD5UDJYgXbKRPrwvP8vlpofgy0LPMRm9/sxYwgrYFOoi3aT3VP45UI= 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=sbnFY7w1; 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="sbnFY7w1" Received: from pendragon.ideasonboard.com (unknown [193.209.96.36]) by perceval.ideasonboard.com (Postfix) with UTF8SMTPSA id 05415E1F; Mon, 27 Oct 2025 11:29:32 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1761560973; bh=woR0YkWOLoOVnkusOQvb+uOUj+GPQRpu6GLsFacG4SU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=sbnFY7w1nY83x7Yfrg65qDDjoOFXFj29h8KBE/qIKqEQ2DR3hTiOM4IIhnH8GQB8f LXqClKaF1LarrQ6Mpd7Ekda+u/bgkFr7pkBrFVM1rxJTD1wL7Z8IYxLG9LcIBlMnsM FaNVPYUv0Mj0/7F9HRMlQYSQnRaetAbKQpjllrnQ= Date: Mon, 27 Oct 2025 12:31:07 +0200 From: Laurent Pinchart To: Oleksij Rempel Cc: Andrew Lunn , Russell King , devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, Daniel Scally , Kieran Bingham , 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: <20251027103107.GF1544@pendragon.ideasonboard.com> References: <20251026122905.29028-1-laurent.pinchart@ideasonboard.com> <20251027100227.GE1544@pendragon.ideasonboard.com> 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 Mon, Oct 27, 2025 at 11:23:03AM +0100, Oleksij Rempel wrote: > On Mon, Oct 27, 2025 at 12:02:27PM +0200, Laurent Pinchart wrote: > > Hi Oleksij, > > > Please note, RTL8211E PHY do use undocumented SmartEEE mode by default. > > > It ignores RGMII LPI opcodes and doing own thing. It can be confirmed by > > > monitoring RGMII TX and MDI lines with oscilloscope and changing > > > tx-timer configurations. I also confirmed this information from other > > > source. To disable SmartEEE and use plain MAC based mode, NDA documentation > > > is needed. > > > > That's useful information, thank you. Would you by any chance to know if > > such NDA would allow contributing the feature upstream ? > > Good question, but the NDA process was actually aborted. We didn't move > forward due to a lack of time and ultimately, a lack of commercial > interest from any projects or customers for this PHY. Fair enough. I've tried :-) If we can't disable SmartEEE in the PHY, does it mean we need to somehow disable EEE in the MAC, but still program the PHY to advertise EEE to the link partner ? -- Regards, Laurent Pinchart