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[2620:137:e000::1:20]) by mx.google.com with ESMTP id ae6-20020a17090725c600b007309a570223si6744970ejc.609.2022.11.21.13.39.20; Mon, 21 Nov 2022 13:39:46 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20210112 header.b=pWh+Byun; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229664AbiKUVRL (ORCPT + 92 others); Mon, 21 Nov 2022 16:17:11 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41682 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230475AbiKUVRJ (ORCPT ); Mon, 21 Nov 2022 16:17:09 -0500 Received: from mail-ej1-x62c.google.com (mail-ej1-x62c.google.com [IPv6:2a00:1450:4864:20::62c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8EBF24C250; Mon, 21 Nov 2022 13:17:05 -0800 (PST) Received: by mail-ej1-x62c.google.com with SMTP id f27so31523922eje.1; Mon, 21 Nov 2022 13:17:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=J4M9TI7AR4OgJadp3C58zz3rlNRRRueDQ1CdlwASDX4=; b=pWh+ByunsuuktyLY7ubAZRWiVS0Hmwa/4eNNcAewLWhbjCEpyLjSU4cJgG9beTu4Bh Rex9Zdd/mczmBS+XiFAWcoO4T6uhX5q+m2uBeQJ2+mt9WQ8Ir57pfQsx3ttsqbOwfZsE oh8Rvbp53gAmanHTUlbbnKaLRVH6Knh+gMCqxaqAzEGGQHr10yrMxpgRkCxe3UBmaqAZ l6zQM4aahvLmqZk5E4nfSZBS7F2TYiI4pZcElyrqsahdUlXyIU3Rg7KYYvuGjytSnTSQ YBltiE5oEn9X3u0R5RDkbO84Tqu0TlHgpR8FmnTp5xKrp3+WZMDXIOrW0VpS2fp7Drq+ tJZQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=J4M9TI7AR4OgJadp3C58zz3rlNRRRueDQ1CdlwASDX4=; b=rM5/36BCuEaK6sGi4ySlFkxxO/BRFYoLlcboLQ1aSV2tnPx52n2bE5dMS4ppxdhNsx y7hBdMeV+89IwB046OAh7UdLuIC7PrPkGIGWIEnr6Dm9HcH3HsIbsK9JLc0U4DH8z+jF CwM09UN2wmfhxqrkUhvIGyEtfk4BnC5eVnwd010+oZeVEkCbDdbOWHy78XaUYjZYzeIx BTYnJFaU6HCHf6yaju7XHX+lKPo7kZW+/Wxw8H1TdSJ+V/aeZhpW4aMZn2g5uDHij6EA wp569Be16JyoI4wp3/IIe586rnKhHoAdfR6CRXkPmqWpE3cFUPD2XzZcdrzM/hhzuR8+ OESQ== X-Gm-Message-State: ANoB5pmAU2Ul/mH46WMZ72hBgbUqfQD8bB0flDL/gdjrhQAVG82uiT4C Fa/JtuhZzVAWQ6yAcyr7z8k= X-Received: by 2002:a17:906:edce:b0:7ad:dd43:5d18 with SMTP id sb14-20020a170906edce00b007addd435d18mr1048608ejb.389.1669065423932; Mon, 21 Nov 2022 13:17:03 -0800 (PST) Received: from skbuf ([188.26.57.184]) by smtp.gmail.com with ESMTPSA id fi13-20020a056402550d00b004580862ffdbsm5610901edb.59.2022.11.21.13.17.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 21 Nov 2022 13:17:03 -0800 (PST) Date: Mon, 21 Nov 2022 23:17:00 +0200 From: Vladimir Oltean To: Arun Ramadoss Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, woojung.huh@microchip.com, UNGLinuxDriver@microchip.com, andrew@lunn.ch, vivien.didelot@gmail.com, f.fainelli@gmail.com, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, linux@armlinux.org.uk, Tristram.Ha@microchip.com, richardcochran@gmail.com Subject: Re: [RFC Patch net-next v2 0/8] net: dsa: microchip: add PTP support for KSZ9x and LAN937x Message-ID: <20221121211700.egmoxcav55axeylb@skbuf> References: <20221121154150.9573-1-arun.ramadoss@microchip.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20221121154150.9573-1-arun.ramadoss@microchip.com> X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Arun, On Mon, Nov 21, 2022 at 09:11:42PM +0530, Arun Ramadoss wrote: > The LAN937x switch has capable for supporting IEEE 1588 PTP protocol. This > patch series add PTP support and tested using the ptp4l application. > LAN937x has the same PTP register set similar to KSZ9563, hence the > implementation has been made common for the ksz switches. > KSZ9563 does not support two step timestamping but LAN937x supports both. > Tested the 1step & 2step p2p timestamping in LAN937x and p2p1step > timestamping in KSZ9563. A process-related pattern I noticed in your patches. The Author: is in general the same as the first Signed-off-by:. I don't know of cases where that's not true. There can be more subsequent Signed-off-by: tags, and those are people through the hands of whom those patches have passed, and who might have made changes to them. When you use Christian's patches (verbatim or with non-radical rework, like fixes here and there, styling rework, commit message rewrite), you need Christian to appear in the Author: and first Signed-off-by: field, and you in the second. When patches are more or less a complete rework (such that it no longer resembles Christian's original intentions and it would be misleading to put his sign off on something which he did not write), you can put yourself as author and first sign off, and use Co-developed-by: + Signed-off-by for Christian's work (the sign off still seems to be required for some reason). You need to use your judgement here, you can't always put your name on others' work. You can also say "based on a previous patch posted on the mailing lists which was heavily reworked" and provide a Link: tag with a lore.kernel.org or patchwork.kernel.org link. Under the "---" sign in the patch you can also clarify the changes you've made, if you decide to keep Christian's authorship but make significant but not radical changes. These annotations will always be visible in patchwork even if not in git. At least that's what I would do.