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 66941E77188 for ; Tue, 14 Jan 2025 10:31:31 +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:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=GA/Tg/7baXnKm3SwQ55FP1056nxIRWPWVHxeGnzfrOw=; b=mb8g97JvyRnmDjmGNgKPSNQIHZ 2UrZVx4VSktN4BDhY9EtqpLv4XIPMbBR6M+dExAXfmVfVfdyBet9hUQ2Yavs3HfQ7f/hJ9XFrN0Mu XHwZd68CeR9zECR20/aq3CMcHnVZer01o05+OscTm38YkHYhMHiL/0mVzx9aVa/MuzKSxzoMozf+F maOGB+c7BgC5KGQ+xcZrzi82SG6u98XYCU9Mqkgoi0FM6s6N07JvW3aDeCcnmUnL3nsxxrPC5T/QC hU347dDyUL+cdzVhUKKM9uH/PJYhY0neRNhrwYQ3VTB7ABQqkSZL4uSBYU3hjaqcwMWmEQZJmoNwr BaMj5ouQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tXeCd-000000086Vi-17sT; Tue, 14 Jan 2025 10:31:19 +0000 Received: from out-182.mta0.migadu.com ([91.218.175.182]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tXeBO-0000000869f-0JsB for linux-arm-kernel@lists.infradead.org; Tue, 14 Jan 2025 10:30:03 +0000 Message-ID: <52dab677-6ec9-4ae2-803f-1a2a34c32007@linux.dev> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1736850599; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=GA/Tg/7baXnKm3SwQ55FP1056nxIRWPWVHxeGnzfrOw=; b=jwbL0GKCIehF3M3xckD3cBWjbhPRCEMzEavXLyL4y5L/V94tF6HT1FTrRQweF3EOUCan/A I0YTwI/haTiPydzelWmoiRk98CTdR5v6/A0FuXJWBHVFOuU12WncAKnqTr1P9VhNwz8t3r 8yED/ivhpv/jPtwP6yHQnDJynDt7+jw= Date: Tue, 14 Jan 2025 18:29:47 +0800 MIME-Version: 1.0 Subject: Re: [PATCH net-next v7 3/3] net: stmmac: dwmac-nuvoton: Add dwmac glue for Nuvoton MA35 family To: Paul Menzel , Andrew Lunn Cc: Joey Lu , andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, mcoquelin.stm32@gmail.com, richardcochran@gmail.com, devicetree@vger.kernel.org, ychuang3@nuvoton.com, netdev@vger.kernel.org, openbmc@lists.ozlabs.org, alexandre.torgue@foss.st.com, linux-kernel@vger.kernel.org, joabreu@synopsys.com, schung@nuvoton.com, peppe.cavallaro@st.com, yclu4@nuvoton.com, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org References: <20250113055434.3377508-1-a0987203069@gmail.com> <20250113055434.3377508-4-a0987203069@gmail.com> Content-Language: en-US X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Yanteng Si In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250114_023002_260946_E28356B9 X-CRM114-Status: GOOD ( 13.08 ) 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 在 2025/1/14 10:21, Paul Menzel 写道: > Dear Andrew, > > > Thank you for your quick reply. > > > Am 14.01.25 um 21:16 schrieb Andrew Lunn: >>>> +#define NVT_MISCR_RMII          BIT(0) >>>> + >>>> +/* 2000ps is mapped to 0x0 ~ 0xF */ >>> >>> Excuse my ignorance: What is ps? >> >> picoseconds. An RGMII link needs a 2ns delay between the clock line >> and the data lines. Some MACs allow you to tune the delay they can >> insert, in this case in steps of 2ns / 16. > > Thank you for the clarification. Maybe it’s my English, but I didn’t > deduce this from how the comment is worded. I do not have a better idea > either. Hmmm, how about: 2000 ps is xxxx I checked the kernel code and it looks like folks usually put a space between the number and the unit. I looked into the rules of a bunch of publishers again. It seems like there's a rule about putting a space between a number and a unit, but when the unit is a symbol, that's an exception: space: 10 kg 10 ℃ 10 h no space: 22°36′48″N, 114°10′10″E Thanks, Yanteng