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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CC4BCC433F5 for ; Thu, 4 Nov 2021 18:16:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B247E61261 for ; Thu, 4 Nov 2021 18:16:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234104AbhKDSSk (ORCPT ); Thu, 4 Nov 2021 14:18:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39526 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234101AbhKDSSk (ORCPT ); Thu, 4 Nov 2021 14:18:40 -0400 Received: from pandora.armlinux.org.uk (pandora.armlinux.org.uk [IPv6:2001:4d48:ad52:32c8:5054:ff:fe00:142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7B809C061714 for ; Thu, 4 Nov 2021 11:16:01 -0700 (PDT) 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-Transfer-Encoding:Content-Type:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Reply-To: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=44JK5jZSdaEoySOJK+3VMsxP4//qzIt8zzR6/J4I3FQ=; b=JM5N/S30PrczUVBWyFCthDWeG2 H2FWGtgihP5Qj/xiqQyg3ugsyW92Y88eHBAN1uO52OyfWWo10vjtzn51f0nFJK8hO5FQ9J+0e4/iK JjwP20rnmsolQDWbae2yogouFe4iA5S3MNpQnK/efMrdc08n7PwR3n2IN3YCju+1A3EHHETbs3iEt /TGrpMFLDmNb5p5zCOG2HiOT0BvwZ7b+cYaEMiDbXdDzfCea9esEWKip5MeYy4/oIk9mGwhIxniry qYnJTcL2ZJIAeEWIZwovL/9hlJMULgWbOSee7u8lvmNAefVuza+msWI9rTWcAEv8JcgNHTEgDyOuB Rq2BxYkg==; Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:55486) by pandora.armlinux.org.uk with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1mihHL-0006Dc-5Z; Thu, 04 Nov 2021 18:15:59 +0000 Received: from linux by shell.armlinux.org.uk with local (Exim 4.94.2) (envelope-from ) id 1mihHK-0007Wi-0M; Thu, 04 Nov 2021 18:15:58 +0000 Date: Thu, 4 Nov 2021 18:15:57 +0000 From: "Russell King (Oracle)" To: Marek =?iso-8859-1?Q?Beh=FAn?= Cc: netdev@vger.kernel.org, Jakub Kicinski , David Miller Subject: Re: [PATCH net] net: dsa: mv88e6xxx: Don't support >1G speeds on 6191X on ports other than 10 Message-ID: References: <20211104171747.10509-1-kabel@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20211104171747.10509-1-kabel@kernel.org> Sender: Russell King (Oracle) Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Thu, Nov 04, 2021 at 06:17:47PM +0100, Marek Behún wrote: > Model 88E6191X only supports >1G speeds on port 10. Port 0 and 9 are > only 1G. Interesting. The original commit says: SERDESes can do USXGMII, 10GBASER and 5GBASER (on 6191X only one SERDES is capable of more than 1g; USXGMII is not yet supported with this change) which is ambiguously worded - so I guess we now know that it's only port 10 that supports speeds above 1G. Can ports 0 / 1 / 10 be changed at runtime (iow, is the C_Mode field writable on these ports?) Thanks. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!