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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 682E3C369AB for ; Mon, 21 Apr 2025 18:44:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=zrvN1J9qQHCCErdHQ3qLnkC3Mf8XZ2hYifvJ1suxwRQ=; b=gzxMo1f/5C+QUkHMUotBXwWXzo /RqKh2WSo2vMfi1pz4DRQIVhC+pp7ZOXTtgjWZ1HpnvqbpjS+eoIH59DRfNb22BcWh1lU9DyXIIoW 5ijsiCv370CMh2JO33OYMTuIfuH3ZVdV2QeQ9hvADxxMA1bfUcfT/JmxWVvps+GiEJaTofXIEphD0 k7TzKJH4KQ157pyI/1OV6hwImMYqvlTI4QvUioaED6Y5vs6pXIb0M08DsZP6G+DgTMUlHgzFf0z6l 6V48IVVa0p6vQNDBWDRdqfU4gUtMsblYrGZjhYOQaG/RFJAUUsAYjvUHQ9fasByY7J1EN6d61gMXv VGR55aFQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1u6w8G-00000004wKX-0qfj; Mon, 21 Apr 2025 18:44:40 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1u6w61-00000004vwG-3Tsh for linux-arm-kernel@lists.infradead.org; Mon, 21 Apr 2025 18:42:23 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 125725C5844; Mon, 21 Apr 2025 18:40:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 81192C4CEE4; Mon, 21 Apr 2025 18:42:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1745260940; bh=PKCtPZ5e16IZooE+CufNWIVCR2UhdYPQvpu/jck5oIc=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=nJso5JEpx2oKtGorQjSxlvbsd2Hn5Vx7W7R0R2WOkGPTWmFulwzG6jwFHz/wkFHj+ CBGggxCEuBFtwEo3wk4QR1HbecDqNr7jHdV1fljhr7jW2gxFjMlFaSMq5fsijPzwzR hwAGOpisTFLNPxo7lfualLMzNFlX9K1Pi/8aagmGpRFZzgiMNa2ZRRKgdKH7wFIe34 rB2le5FiNLcZTblfpCso2znlJmw6nPmLiFLUOPall6XrAA4KtVmI2RtP/8KYioRVgx mAQaAj/50QgJz1lcWzCbAt/ODlwwEq9m8ZvUVD26IBYlqRrwc/zRmbmu7HVWAsnOvO kZR3OeeWA8i4w== Date: Mon, 21 Apr 2025 13:42:18 -0500 From: "Rob Herring (Arm)" To: Matthias Schiffer Cc: linux-kernel@vger.kernel.org, Conor Dooley , linux-arm-kernel@lists.infradead.org, Andy Whitcroft , Joe Perches , Nishanth Menon , "David S. Miller" , Jonathan Corbet , Andrew Lunn , netdev@vger.kernel.org, Eric Dumazet , Dwaipayan Ray , Roger Quadros , Tero Kristo , Vignesh Raghavendra , Jakub Kicinski , Lukas Bulwahn , Siddharth Vadapalli , devicetree@vger.kernel.org, Krzysztof Kozlowski , Paolo Abeni , linux@ew.tq-group.com, linux-doc@vger.kernel.org Subject: Re: [PATCH net-next 1/4] dt-bindings: net: ethernet-controller: update descriptions of RGMII modes Message-ID: <174526093810.2599006.6297495760471249185.robh@kernel.org> References: <218a27ae2b2ef2db53fdb3573b58229659db65f9.1744710099.git.matthias.schiffer@ew.tq-group.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <218a27ae2b2ef2db53fdb3573b58229659db65f9.1744710099.git.matthias.schiffer@ew.tq-group.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250421_114221_912173_AEF3A004 X-CRM114-Status: GOOD ( 13.73 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, 15 Apr 2025 12:18:01 +0200, Matthias Schiffer wrote: > As discussed [1], the comments for the different rgmii(-*id) modes do not > accurately describe what these values mean. > > As the Device Tree is primarily supposed to describe the hardware and not > its configuration, the different modes need to distinguish board designs > (if a delay is built into the PCB using different trace lengths); whether > a delay is added on the MAC or the PHY side when needed should not matter. > > Unfortunately, implementation in MAC drivers is somewhat inconsistent > where a delay is fixed or configurable on the MAC side. As a first step > towards sorting this out, improve the documentation. > > Link: https://lore.kernel.org/lkml/d25b1447-c28b-4998-b238-92672434dc28@lunn.ch/ [1] > Signed-off-by: Matthias Schiffer > --- > .../bindings/net/ethernet-controller.yaml | 16 +++++++++------- > 1 file changed, 9 insertions(+), 7 deletions(-) > Acked-by: Rob Herring (Arm)