From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pandora.armlinux.org.uk (pandora.armlinux.org.uk [78.32.30.218]) (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 EACAD18DF80; Tue, 2 Sep 2025 13:35:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=78.32.30.218 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756820120; cv=none; b=DRAQYinJAUc5f+2vzgav4juVYm1/9ahGneqBvvOP+uowepRkSNCvHGOGcGz10Pvx9NKvUx/2VNPT4QEqQ13qUZDNJ118+IJmOX1cQsM6+QaqMm5v6F/GToy2vlGe+UElyMU/G42q7BSseKkbXvzvXB3mXwrrIDL2fta1MnTbi6w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756820120; c=relaxed/simple; bh=xUWKJcdlXzMjs1BmaS6HiN8JM5c6HpQ9mNLZ/eAr/Ls=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Ic7ZvF9AQzcmznKnivdGDPjKJoPJJEYiFFB6v7GWhkZxuVjhxEXp+Q4Iu9Rb93Zy/N0TRY4CxQ2zFF50CFRWlfHZpcMsnEjaXJ5pxJnqWOdiSDk8rqFun6q8HEOpFYyH5/pSM5efBv8HHZwHw7Hu40y0Sf5U3itM6l8mr7M02Ws= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=armlinux.org.uk; spf=none smtp.mailfrom=armlinux.org.uk; dkim=pass (2048-bit key) header.d=armlinux.org.uk header.i=@armlinux.org.uk header.b=SgvyQ2aW; arc=none smtp.client-ip=78.32.30.218 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=armlinux.org.uk Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=armlinux.org.uk Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=armlinux.org.uk header.i=@armlinux.org.uk header.b="SgvyQ2aW" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Sender: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-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=yPD0mQHG+NFBjBqbvmLZhMDNtWCPfim9f9WnWnRZZHI=; b=SgvyQ2aWLBPcy9uEM52Mpl8SvY kQseUi+JQze4tsMl9Cg4mNV8K02dOeP7GpLHtXIQhEtaosqhP3CjsvIcedPM/VfybZCuXOmzH/n04 7eA5GmwueFp6CZderQWK67IBLFDU9PRPZiU4oTshvxLIyngYIVZm+QOpPuTGQZ+FPXuiZ1LyVDXfS 5ojC9NTxfpSX/mCeRm1sPMICnR1WgfX58hpaiyjWyKOl7iCHHa45V/EUwM/4DFxLRGZvClk9uwaqB vpvKMkDMSWK6ZohNTgFq/+MnzEvKUxRREYrP4KWiZtKY7BzO+pLFYOFnzx7qcRYmYm9BrpaSBjJ0+ 4OX8KLNw==; Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:42068) by pandora.armlinux.org.uk with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1utRAG-000000007hR-2se5; Tue, 02 Sep 2025 14:35:12 +0100 Received: from linux by shell.armlinux.org.uk with local (Exim 4.98.2) (envelope-from ) id 1utRAE-00000000817-1Qic; Tue, 02 Sep 2025 14:35:10 +0100 Date: Tue, 2 Sep 2025 14:35:10 +0100 From: "Russell King (Oracle)" To: rohan.g.thomas@altera.com Cc: Andrew Lunn , Heiner Kallweit , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Matthew Gerlach Subject: Re: [PATCH net-next] net: phy: marvell: Fix 88e1510 downshift counter errata Message-ID: References: <20250902-marvell_fix-v1-1-9fba7a6147dd@altera.com> Precedence: bulk X-Mailing-List: netdev@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: <20250902-marvell_fix-v1-1-9fba7a6147dd@altera.com> Sender: Russell King (Oracle) On Tue, Sep 02, 2025 at 01:59:57PM +0800, Rohan G Thomas via B4 Relay wrote: > From: Rohan G Thomas > > The 88e1510 PHY has an erratum where the phy downshift counter is not > cleared on a link power down/up. This can cause the gigabit link to > intermittently downshift to a lower speed. Does this apply to all 88e1510 PHYs or just some revisions? Also, what is a "link power down/up" ? Are you referring to setting BMCR_PDOWN and then clearing it? (please update the commit description and repost after 24 hours, thanks.) -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!