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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4D547C76196 for ; Tue, 11 Apr 2023 11:35:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229477AbjDKLfY (ORCPT ); Tue, 11 Apr 2023 07:35:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44284 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229459AbjDKLfX (ORCPT ); Tue, 11 Apr 2023 07:35:23 -0400 Received: from mail-ej1-x62e.google.com (mail-ej1-x62e.google.com [IPv6:2a00:1450:4864:20::62e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 10240E7A for ; Tue, 11 Apr 2023 04:35:21 -0700 (PDT) Received: by mail-ej1-x62e.google.com with SMTP id sh8so19435190ejc.10 for ; Tue, 11 Apr 2023 04:35:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; t=1681212919; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=p+w8xJXIlI7Zu0RlE+gH/iZj22rfblX0XI64w4c5cMI=; b=FQJb/b7eADQwglz/tz3FBrhq/YD/45aFWAThUUe5zum3xMtek2kGqcE+funfQB4273 tKDp98tOMIkU7jnIPq7OjkiixiUPTbb3afndngVHD1N/Fyp+RhiYZkviXQMz/doEotEo MzyA3U1qXB9bHnRZhsxehaRtrnKghvZbL1+3PeVqFurMFbYx7pabT6rQglhUIGECLdZs gu4V9saCGOXArTxn2gfF275398L8BMmQTK0mDyRmNXM7sseODunn0oBs7PdF7uAlIfQ2 ve0Nk0VM8W4KCMwwCgOd5ntulGyvzy2B665124B2qccYp+4t+X6XFH7K7kHQRe9hl7hb aJ4Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1681212919; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=p+w8xJXIlI7Zu0RlE+gH/iZj22rfblX0XI64w4c5cMI=; b=qkm5lvF9JFutHvo0M/LWADCo/XLYREePJXob42QI0+gempfE6c2RcPX/QqIDgRUVDg mPLzI4tITJ9erogElxhKNJUIZG2WJsoQ//0YNHxP2kx56o8g+KAtL3vaHYD/ADcO/Pd5 fTmTRwRsxHbzwv2CGkbSVWtwOG5y/5xsx4Q4phT7NyV38owNyjVVEzLj4t3x7ELqS1Hp ciy5Iee5+akoMdwMMB7egg58+O+PhkNW/NM/U5kWaXFw0AGAbdQnRlaC8glpDJOMdI27 JyOzInNy4G+Nlczghgb0KJFhrMCCvfFbhNvD3WwIJ0H13ElEHk55E2U+oHVHJAa+NEi5 nreA== X-Gm-Message-State: AAQBX9fFA09XudIhVZpBs6/r3nH/lq+uTJ5zGRuMYEmAOJ00/7kzAuqc LaBHbl/Budk20l9bwMp9beQ= X-Google-Smtp-Source: AKy350b3hcW9FKWWcYvsE6VxIdhXokuRwBvqcr4a6yil1sj5mNIxQOTl3XUhxL1ZHq2IS+5ntN7F2Q== X-Received: by 2002:a17:906:f182:b0:94b:d72:bfa9 with SMTP id gs2-20020a170906f18200b0094b0d72bfa9mr2328208ejb.18.1681212919210; Tue, 11 Apr 2023 04:35:19 -0700 (PDT) Received: from skbuf ([188.27.184.189]) by smtp.gmail.com with ESMTPSA id g19-20020a1709065d1300b00928e0ea53e5sm6015934ejt.84.2023.04.11.04.35.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Apr 2023 04:35:19 -0700 (PDT) Date: Tue, 11 Apr 2023 14:35:16 +0300 From: Vladimir Oltean To: "Russell King (Oracle)" Cc: Oleksij Rempel , Andrew Lunn , Woojung Huh , Arun Ramadoss , Florian Fainelli , netdev@vger.kernel.org, UNGLinuxDriver@microchip.com, Eric Dumazet , kernel@pengutronix.de, Jakub Kicinski , Paolo Abeni , "David S. Miller" Subject: Re: FWD: Re: [PATCH net-next v1 1/1] net: dsa: microchip: ksz8: Make flow control, speed, and duplex on CPU port configurable Message-ID: <20230411113516.ez5cm4262ttec2z7@skbuf> References: <7055f8c2-3dba-49cd-b639-b4b507bc1249@lunn.ch> <20230411085626.GA19711@pengutronix.de> <20230411111609.jhfcvvxbxbkl47ju@skbuf> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230411111609.jhfcvvxbxbkl47ju@skbuf> Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Tue, Apr 11, 2023 at 02:16:09PM +0300, Vladimir Oltean wrote: > I may have missed something. Maybe I'm wrong, but my blind intuition says that when autoneg is disabled in the integrated PHYs, flow control _is_ by default forced off per port, unless the "Force Flow Control" bit from Port N Control 2 registers is set. So that can be used to still support: - ethtool --pause swp0 autoneg off rx on tx on - ethtool --pause swp0 autoneg off rx off tx off - ethtool --pause swp0 autoneg on # asymmetric RX/TX combinations depend upon autoneg I may be wrong; I don't have the hardware and the ethtool pause autoneg bit is not 100% clear to me.