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=-3.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 EF5EFC47094 for ; Thu, 10 Jun 2021 14:59:30 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id B12EA6023C for ; Thu, 10 Jun 2021 14:59:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B12EA6023C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lunn.ch Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=9KuJ1I77a04ZXkj0FpgKu6K4/fF3s+FZ6lRMoU/5N+k=; b=V8nPenPMkAHSaO NWxDPfaGUWnq/XZCfMK87S3PTjmzUBG9SoTIcci8Z7DLpVr7Rp86a9H4S+2ZpcvLsS07QILk6X5mi 8nV4z+SBL03t7FYcoZKlNZWdp/YNOxQYRfEHaC0HW3Byvyqb1geVRxLMVIwvMVHaETuCY+RKuMOpz A/hMsfpZFDVoqbAKjgbXR4HekT4KCFyzgl1I4cUIeZ7P43TPSUQUHlPpUCvM9vDilR3w9zhqKV87/ nN05h34M+7LzF3IX25E+mdGMiaMyHpf5W+RNF+Gy7ENsff5RgjCqt/yIB5jJewEtLPdyisIQuItNF WmOUklIiUxOUKa1zkN1A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1lrM81-001FsS-SE; Thu, 10 Jun 2021 14:57:54 +0000 Received: from vps0.lunn.ch ([185.16.172.187]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1lrM7y-001Fr7-Bq for linux-arm-kernel@lists.infradead.org; Thu, 10 Jun 2021 14:57:51 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lunn.ch; s=20171124; h=In-Reply-To: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=6VMkBxJVMb4llnPeG01oVtHAShtkJHPG7miABnV2szM=; b=EXLoYsOiEtnCIsqltslkk7LckW QxRXMeP/Ll+CfqiYnl4StFQOcoTmuIxrvMbxLQbx+5DYCdCqqGCtxvc5XRYC9YNxO/Gje+tdvV0nP oF+Mcr16TA+hDlkecANfpvBp2A1AgdMtPTzOILwj1gfEa4LS8PvlBhhn2GyO7hII8sNI=; Received: from andrew by vps0.lunn.ch with local (Exim 4.94.2) (envelope-from ) id 1lrM7d-008fyM-Dk; Thu, 10 Jun 2021 16:57:29 +0200 Date: Thu, 10 Jun 2021 16:57:29 +0200 From: Andrew Lunn To: Zhou Yanjie Cc: davem@davemloft.net, kuba@kernel.org, robh+dt@kernel.org, peppe.cavallaro@st.com, alexandre.torgue@foss.st.com, joabreu@synopsys.com, mcoquelin.stm32@gmail.com, linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, dongsheng.qiu@ingenic.com, aric.pzqi@ingenic.com, rick.tyliu@ingenic.com, sihui.liu@ingenic.com, jun.jiang@ingenic.com, sernia.zhou@foxmail.com, paul@crapouillou.net Subject: Re: [PATCH v2 2/2] net: stmmac: Add Ingenic SoCs MAC support. Message-ID: References: <1623260110-25842-1-git-send-email-zhouyanjie@wanyeetech.com> <1623260110-25842-3-git-send-email-zhouyanjie@wanyeetech.com> <405696cb-5987-0e56-87f8-5a1443eadc19@wanyeetech.com> <346f64d9-6949-b506-258f-4cfa7eb22784@wanyeetech.com> <12f35415-532e-5514-bc97-683fb9655091@wanyeetech.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <12f35415-532e-5514-bc97-683fb9655091@wanyeetech.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210610_075750_429807_9B820306 X-CRM114-Status: UNSURE ( 6.20 ) X-CRM114-Notice: Please train this message. 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: , 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 > Here is Ingenic's reply, the time length corresponding to a unit is 19.5ps > (19500fs). Sometimes, there is a negative offset in the delays. So a delay value of 0 written to the register actually means -200ps or something. Andrew _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel