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=-4.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 A58BFC4338F for ; Wed, 18 Aug 2021 17:05:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8B4F9606A5 for ; Wed, 18 Aug 2021 17:05:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232577AbhHRRGQ (ORCPT ); Wed, 18 Aug 2021 13:06:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59002 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229784AbhHRRGP (ORCPT ); Wed, 18 Aug 2021 13:06:15 -0400 Received: from mail-pg1-x52c.google.com (mail-pg1-x52c.google.com [IPv6:2607:f8b0:4864:20::52c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 967D4C061764; Wed, 18 Aug 2021 10:05:40 -0700 (PDT) Received: by mail-pg1-x52c.google.com with SMTP id x4so2897256pgh.1; Wed, 18 Aug 2021 10:05:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=y0WyiEQfJ5BEumrqHD4PuYkdcoLZT1ER4+J/Mwi+4DY=; b=fXVowPPp9qtDvG/dZC9YKEX4X+0eMwjBKiQer7Do/HoDgzA5ll9qkbMbkgm/I7MvIf vLDqGEOlh3jLKvnS4klF6wuxO1hnPGZXlZUstzRc8pe64FY6vyxlfEPctKA1n85xTngZ o0G8H0yicS7G4MA2BfeZ7EYdZceeas9ywNSjrPKgeGo1kinXTOzIYvt6YypNBnRbjW6/ /uxeHtbuLz4189ALvXMr/V7pdbsQb17FEuw5nFmU77J1sf4oztS8DtcLgpZIO2mA+k4s YnRz6A784vnPGyUcZzsVWsRz+6oGONIraU8SwotWltXjW7tCY3SrW1OUsknpSQyrGH1s TJzg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=y0WyiEQfJ5BEumrqHD4PuYkdcoLZT1ER4+J/Mwi+4DY=; b=PjYhlTG1SWKImRqV/NYs7zIdektclhUIcz7P9817kVoPbAcmXjk2YWtDckQCGPAtP7 18fo2bSSPNsjPKYfOoQngV/y+ApXiQHlLi0V/CxwGTZTv5MVqiBs/NYj+vsn+YNldh1c TwQiyJXozQKOyzTGJLjM8KfpTOK/buCmG5GHzGxD+bCrHp0B/52z6UBAAXZ9d6DLGkzn KEx+CKg7hRndRb6QRpMeQ3S/iqc6KwE11F4S587pdoC2dTdp5R2A8xmjsIHEZUyQFKqS 0QCzRPkjuo0nFn5dVNHs/FmRek6TveIffCjSGqbJEe8Dn4NmBeoKV7kN6utNkJaZtEyB Lz6w== X-Gm-Message-State: AOAM533uNc3EdX73TL34itzw+YWdyLI3OHB8LCgRMdYJeJADDhCDGQ+x 2goi74Zkw7/sXTI+/TS1DJ4= X-Google-Smtp-Source: ABdhPJzvfWsJKrXR0zuvu0wYxzR3EqJEhjAXU+vPLZEGuEVv5+tB29am4ZZrvbYzqxErmhspXDbRjA== X-Received: by 2002:a65:4307:: with SMTP id j7mr9617547pgq.387.1629306340131; Wed, 18 Aug 2021 10:05:40 -0700 (PDT) Received: from hoboy.vegasvil.org ([2601:645:c000:2163:e2d5:5eff:fea5:802f]) by smtp.gmail.com with ESMTPSA id x7sm306615pfj.200.2021.08.18.10.05.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Aug 2021 10:05:39 -0700 (PDT) Date: Wed, 18 Aug 2021 10:05:36 -0700 From: Richard Cochran To: Arkadiusz Kubalewski Cc: linux-kernel@vger.kernel.org, intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org, linux-kselftest@vger.kernel.org, jesse.brandeburg@intel.com, anthony.l.nguyen@intel.com, davem@davemloft.net, kuba@kernel.org, shuah@kernel.org, arnd@arndb.de, nikolay@nvidia.com, cong.wang@bytedance.com, colin.king@canonical.com, gustavoars@kernel.org Subject: Re: [RFC net-next 0/7] Add basic SyncE interfaces Message-ID: <20210818170536.GE9992@hoboy.vegasvil.org> References: <20210816160717.31285-1-arkadiusz.kubalewski@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210816160717.31285-1-arkadiusz.kubalewski@intel.com> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Aug 16, 2021 at 06:07:10PM +0200, Arkadiusz Kubalewski wrote: > The second part can be used to select the port from which the clock > gets recovered. Each PHY chip can have multiple pins on which the > recovered clock can be propagated. For example, a SyncE-capable PHY > can recover the carrier frequency of the first port, divide it > internally, and output it as a reference clock on PIN 0. This really sounds like its own thing, and not a PHC at all. > Next steps: > - Add CONFIG_SYNCE definition into Kconfig > - Add more configuration interfaces. Aiming at devlink, since this > would be device-wide configuration As a first step, finding an appropriate kernel/user space API would be needed. Thanks, Richard