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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 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-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201125_203013_937679_60D71E37 X-CRM114-Status: GOOD ( 14.60 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peng Fan , Fugang Duan , stefan.agner@toradex.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, krzk@kernel.org, Vivien Didelot , NXP Linux Team , Fabio Estevam , Jakub Kicinski , Vladimir Oltean , Shawn Guo , "David S . Miller" , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel