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 X-Spam-Level: X-Spam-Status: No, score=-4.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0F577C63798 for ; Thu, 26 Nov 2020 01:30:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 99FEE21534 for ; Thu, 26 Nov 2020 01:30:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="VlJmQqw5" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731994AbgKZBaK (ORCPT ); Wed, 25 Nov 2020 20:30:10 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58444 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730646AbgKZBaK (ORCPT ); Wed, 25 Nov 2020 20:30:10 -0500 Received: from mail-pf1-x444.google.com (mail-pf1-x444.google.com [IPv6:2607:f8b0:4864:20::444]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E2A23C061A52; Wed, 25 Nov 2020 17:30:09 -0800 (PST) Received: by mail-pf1-x444.google.com with SMTP id e8so166687pfh.2; Wed, 25 Nov 2020 17:30:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=7Wvzm+8lvRf1crH0kVSlHEeSP3AC7RZpdjWMOjFrfc0=; b=VlJmQqw5CyQNDdKTuVy5mY/62KO26UDN3VEAWM4bxt6Znu3rF9zL4LNjPsxbngin3P hLGxGWTsffQVJ9ntVX0zEXnKibMhzR2hq3cJ1Z0k0pjVmvQiF1I162+DiEiTHYtny6ak vFdFVzApOHp6ZGeq8iqccWSKeqAtJuSicn3JHUNfK1UEium9lEja/KkNwjkvKaExV66d GkmcdbvLNK2obo1qGR0h841zuoJfkszlMZzD9t3H1WdmBIOuLp8EGZtRgJoAMdr1kadl Ew+83OjlAIc44R7zygQYFxHTEk8TNR35RnRmu1aAyavUeJMiG+K4aVdtuOSRERQcnkUG yIqg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=7Wvzm+8lvRf1crH0kVSlHEeSP3AC7RZpdjWMOjFrfc0=; b=Q+YXMjXNbpvUmd12NufHFBBeO7vT1vgnoKammODQcwoId3beUd8ZG9SHQqvVFckoOr SpT0lHGiMsjd/FIbXjQPhF+4G/eLV4evhZ+0ZthStpT2l5waTp3jWeAfkxWcw05OMnt+ IO5nXUSbrr5eS/Ao6csedaISd0UjS3O8/Pf8Sk323+YQ/6BsrnNGFU3qOU7/2xYqgbdV oPZrAptg5qHpVJazoWtd1wEU7m/YojMNmISc6akBhx8svUwVi3onk0PFBicDC1kP8xXI f0rFT1bEvVTVflrDnJSrSnB+qFBC95krBEB2YwFF8ybr+p3hwNiaan5eNx7c9p9cCl4j 6CcA== X-Gm-Message-State: AOAM533hLWg1ukYOKmcCjek54hE5Uh4T40LvaY0BKyi2PlVp6tJHT9XJ Vk7vNY7mddZT1Gy3BscmK+k= X-Google-Smtp-Source: ABdhPJyR+uFeZik0HiCiPSUOWc3H9MqR3H9gbS1PAPs7A4YB/Q0hnX1H8IFas8y38DP6gwPKZhqS3Q== X-Received: by 2002:a17:90a:be0a:: with SMTP id a10mr731610pjs.15.1606354209452; Wed, 25 Nov 2020 17:30:09 -0800 (PST) Received: from [10.230.28.242] ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id s26sm2989081pgv.93.2020.11.25.17.30.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 25 Nov 2020 17:30:08 -0800 (PST) Subject: Re: [RFC 0/4] net: l2switch: Provide support for L2 switch on i.MX28 SoC To: Andrew Lunn , Lukasz Majewski Cc: Peng Fan , Fugang Duan , Shawn Guo , stefan.agner@toradex.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, krzk@kernel.org, "David S . Miller" , NXP Linux Team , Jakub Kicinski , Vladimir Oltean , Fabio Estevam , Vivien Didelot , linux-arm-kernel@lists.infradead.org References: <20201125232459.378-1-lukma@denx.de> <20201126000049.GL2073444@lunn.ch> From: Florian Fainelli Message-ID: Date: Wed, 25 Nov 2020 17:30:04 -0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Firefox/78.0 Thunderbird/78.5.0 MIME-Version: 1.0 In-Reply-To: <20201126000049.GL2073444@lunn.ch> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On 11/25/2020 4:00 PM, Andrew Lunn wrote: > On Thu, Nov 26, 2020 at 12:24:55AM +0100, Lukasz Majewski wrote: >> This is the first attempt to add support for L2 switch available on some NXP >> devices - i.e. iMX287 or VF610. This patch set uses common FEC and DSA code. > > Interesting. I need to take another look at the Vybrid manual. Last > time i looked, i was more thinking of a pure switchdev driver, not a > DSA driver. So i'm not sure this is the correct architecture. But has > been a while since i looked at the datasheet. Agreed the block diagram shows one DMA for each "switch port" which definitively fits more within the switchdev model than the DSA model that re-purposes an existing Ethernet MAC controller as-is and bolts on an integrated or external switch IC. -- Florian