From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from vps0.lunn.ch (vps0.lunn.ch [156.67.10.101]) (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 657B91272AA; Tue, 16 Apr 2024 13:46:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=156.67.10.101 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713275218; cv=none; b=D+BJOgZz9v+7pavhxp320MbUdPZ0/EFDuj+/ZgfaqJXla3Bjss3XEGsTYqN1PVxOqq3KBCWcJzJhl/TTjP3aN9vnJu1i9Oc+TJIM+oBZVBXzNDn6hjaQf/Kab8R+hpxuLHomIfjHmoV235JMcoxoZhZrE88rTHGP3+BoZyJTtrE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713275218; c=relaxed/simple; bh=UFZS2qhw3Gwe+c8wfAS9gjs/ftg/X94cDZM2MpqoPnI=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=CfUNch0AL0YbYVNpStKxCUHI7jYhDZd18LRDoSapYWSdMrwNyDVWzxj+SPE2Kd0lAqUAI7jBHaf7aHe3M9+ea8CZGYmtO3yswTdIriIvmmD7KGBrQqZKyRIRxuTppsWQrvnqigVc5FcpwSsHY2hKnXX7qjon1swnlXQHFJpAF04= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=lunn.ch; spf=pass smtp.mailfrom=lunn.ch; dkim=pass (1024-bit key) header.d=lunn.ch header.i=@lunn.ch header.b=zaU4dryC; arc=none smtp.client-ip=156.67.10.101 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=lunn.ch Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=lunn.ch Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=lunn.ch header.i=@lunn.ch header.b="zaU4dryC" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lunn.ch; s=20171124; h=In-Reply-To:Content-Disposition:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:From:Sender:Reply-To:Subject: Date:Message-ID:To:Cc:MIME-Version:Content-Type:Content-Transfer-Encoding: Content-ID:Content-Description:Content-Disposition:In-Reply-To:References; bh=kvfisbNrUr5sf0S3A1nPCGGsrN3i5lCUqXwLFDIDJxc=; b=zaU4dryChTbyn+h5fpt/46J1rO ZWaTM9ZCNkBg0FOdMH661xyOE4pMiI7WKHLbw0t5ng66WnojzXZEze5V6zyrZfYbHSzmhqBDGZ1SE cgYLgiXAaqwMMvKAuAeUaVvm6V3LJRBqiAkt5ibC3qPBEm0GUpw0Kj9mBVkMQlEX9BPY=; Received: from andrew by vps0.lunn.ch with local (Exim 4.94.2) (envelope-from ) id 1rwj8d-00D8ld-OM; Tue, 16 Apr 2024 15:46:19 +0200 Date: Tue, 16 Apr 2024 15:46:19 +0200 From: Andrew Lunn To: Stefan Eichenberger Cc: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, robh@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, lxu@maxlinear.com, hkallweit1@gmail.com, linux@armlinux.org.uk, michael@walle.cc, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH 2/2] net: phy: mxl-gpy: add new device tree property to disable SGMII autoneg Message-ID: <3f7f278f-e490-47f1-971c-ecf44a70cee4@lunn.ch> References: <20240416121032.52108-1-eichest@gmail.com> <20240416121032.52108-3-eichest@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@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: <20240416121032.52108-3-eichest@gmail.com> On Tue, Apr 16, 2024 at 02:10:32PM +0200, Stefan Eichenberger wrote: > Add a new device tree property to disable SGMII autonegotiation and > instead use the option to match the SGMII speed to what was negotiated > on the twisted pair interface (tpi). Could you explain this is more detail. SGMII always runs its clocks at 1000Mbps. The MAC needs to duplicate the symbols 100 times when running at 10Mbs, and 10 times when running at 100Mbps. Andrew