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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4A661E6F078 for ; Tue, 23 Dec 2025 09:14:05 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4db8T76nyWz2xlP; Tue, 23 Dec 2025 20:14:03 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip=156.67.10.101 ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1766481243; cv=none; b=US6gOsEEV3pobEuHDX4OZ+BlsV6RrlcU46DgARuEWwtMcEwwD9uwm8Sx6VY6krrCvqy9GlwOI9y1B9s31Yq2F6h/u3IYdECG02Fnj038p0p9NC+AQ6RZBtMTJrhc49tngxRTgkeEEm+iGP0+qD8wTn9eo+5i9eizLnzsKMGGHGSxWsfjEpnupS2HkGYQDhFK7B8260zvYOJM3NOfK7fljMXBGFnYKY5hHYWb4TnflOS9C/86Rr6iDrTQtrSrfYC9pJzB0hZ/7cxJwI6GT8NGBOgfY8zICmgIU5+LYi900FrfZXeAReB0Sr5DAfUM2bsZ7BEp+fiaUglOkqhJLUFBMQ== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1766481243; c=relaxed/relaxed; bh=HEk39s4EUEiPzn8QUrMy0dlOdorZCmMf4fjGiDLyucY=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Ou0RketQ0HCR+FDSaLI3V+mcGmfU099YeikhClB/RgoVXa1ajY2TA7+ufXNjaY4Hk+MW1CeNDz6/Uj69STAox066XuUPkU0CcdzAqkvwgf96hwkM2aKdHJk+b7ONLUwPNoQYOs2/8rqDxuOF8YIFKv12y20tybSIFollvRhXJ/UFXKSbIt9LwvHYE7wMmVKnGCqO6/R8kVSI3o/IbBASAuV/MeZh/fDm1agUW7oAn9EnPk1E3272yinOjwOrQIgSKQx/6TB9ZsMRb8mlKK7qGhKedCPA2kb3hQikJCBhvQ+fXzXgd7g9OHzK9SydDTmktt4Y30OPOfwf2cPMe5KHbQ== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=lunn.ch; dkim=pass (1024-bit key; unprotected) header.d=lunn.ch header.i=@lunn.ch header.a=rsa-sha256 header.s=20171124 header.b=pMFy6O32; dkim-atps=neutral; spf=pass (client-ip=156.67.10.101; helo=vps0.lunn.ch; envelope-from=andrew@lunn.ch; receiver=lists.ozlabs.org) smtp.mailfrom=lunn.ch Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=lunn.ch Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=lunn.ch header.i=@lunn.ch header.a=rsa-sha256 header.s=20171124 header.b=pMFy6O32; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lunn.ch (client-ip=156.67.10.101; helo=vps0.lunn.ch; envelope-from=andrew@lunn.ch; receiver=lists.ozlabs.org) Received: from vps0.lunn.ch (vps0.lunn.ch [156.67.10.101]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4db8T6544Dz2x99 for ; Tue, 23 Dec 2025 20:14:02 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lunn.ch; s=20171124; h=In-Reply-To:Content-Transfer-Encoding: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=HEk39s4EUEiPzn8QUrMy0dlOdorZCmMf4fjGiDLyucY=; b=pM Fy6O32zXiYSnuByU6S4Pnh4CTm2w1pkPqd/2RU0oPjhbC0146rEV6+5nHEmctSJJD3ysmjpFcr+nu bwyGbv8CIM+GI9DWjEl6tL6olkcK0AB7+kWr1JxniPo/ZRmB53AMXxXG7zWWaLUsxaQmWR/+lTVm/ gutJkDs26RLuB48=; Received: from andrew by vps0.lunn.ch with local (Exim 4.94.2) (envelope-from ) id 1vXySY-000HP0-F1; Tue, 23 Dec 2025 10:13:38 +0100 Date: Tue, 23 Dec 2025 10:13:38 +0100 From: Andrew Lunn To: =?utf-8?B?6Kyd5pS/5ZCJ?= Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Joel Stanley , Andrew Jeffery , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/2] ARM: dts: aspeed: ventura2: Add Meta ventura2 BMC Message-ID: <35f3eba9-5ec4-4cba-8a64-fb521dc65b79@lunn.ch> References: <20251222-ventura2_initial_dts-v1-0-1f06166c78a3@gmail.com> <20251222-ventura2_initial_dts-v1-2-1f06166c78a3@gmail.com> X-Mailing-List: linux-aspeed@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: On Tue, Dec 23, 2025 at 09:49:02AM +0800, 謝政吉 wrote: > On Mon, Dec 22, 2025 at 5:30 PM Andrew Lunn wrote: > > > > > +&mdio0 { > > > + status = "okay"; > > > +}; > > > + > > > +&mac2 { > > > + status = "okay"; > > > + phy-mode = "rmii"; > > > + pinctrl-names = "default"; > > > + pinctrl-0 = <&pinctrl_rmii3_default>; > > > + fixed-link { > > > + speed = <100>; > > > + full-duplex; > > > + }; > > > +}; > > > > That is an odd combination. You enable the MDIO bus, but don't have > > any PHYs on it, no phandles pointing to it. And you have this > > fixed-link. It makes me think you have an Ethernet switch on the bus, > > and this connects to it? > Thanks for the clarification. > Yes, there is an Ethernet switch in the design. > The MAC is connected to the switch via RMII using a fixed-link > configuration. What make/model of switch is it? Is it unmanaged, or does it use SPI or I2C for management? Andrew