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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 86D20C49EA6 for ; Sun, 27 Jun 2021 14:41:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 70EAA6128A for ; Sun, 27 Jun 2021 14:41:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230315AbhF0Onh (ORCPT ); Sun, 27 Jun 2021 10:43:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34450 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230321AbhF0Ong (ORCPT ); Sun, 27 Jun 2021 10:43:36 -0400 Received: from mail-lf1-x133.google.com (mail-lf1-x133.google.com [IPv6:2a00:1450:4864:20::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 49FD1C0617A6 for ; Sun, 27 Jun 2021 07:41:11 -0700 (PDT) Received: by mail-lf1-x133.google.com with SMTP id a11so26626834lfg.11 for ; Sun, 27 Jun 2021 07:41:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=btdlc/ifZaWqLzJPrzCmNv9xr6UOVvnu4j5N5Ajddbc=; b=yffTw/J5lSDtXKZKMbHb+LYAj2r+UxCDpeXnSWFKiXIFDF619yE7YIq5A87id2LvKa Q87cqXc66jFqDBWZR4BnGNgqyAeXaRJjTLIOouA6vrFRvKqoIzkwlROs7MUhWp5znt6h JzzRFwzMOT0YaxSY/d/NuW0vY9y6i6jZNOwKEWLjn+6Nb3WzhpE4oqLWDGhNx08GLZjt CNv9E1//wPPkVcja7fOjXXz+STz7G9aCld7HIphWRNC/N0IgOh9XAlHPM/M82DG8nx4m IR2WxqSeW6s3VK9QWzpCore1k2uJmhYWif/9sCm/yOTj8D8t97/Njy7uLQSVWNUtqi/J rElA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=btdlc/ifZaWqLzJPrzCmNv9xr6UOVvnu4j5N5Ajddbc=; b=svqmcNGjKhhxnCHAwRzHVex4piIVhdww9hlyP1Gwrfvve31SvnuELLM1oooOajbg9n P4a3RPr6rL/2wkRuxHeEsnha15wXSnr0WrLh3q9PrYKCIGj4bN0Qb2U8EGTzRPaZlOYL InavsDQ+eRbTT8EEhno/5yF/OFlKvMaqrY9i21nyhSye4mCq6apkBvNJ7vS3jB4Sojz4 TlD20gHrNk9HARjjReUyJcNRGU9KAcx5XVHW09EwXvcCGOMQFz0865HMnEXmORK2uYUf KNyRz59QC6eLJndTZIlgbJRtECfmI/rbAMi7P9GsmeZFquZZbocsTWFCNHUgyD+7Hly0 VbsA== X-Gm-Message-State: AOAM5310u5Up162pfyVThq8oSK4hInTuvOkjWXkmdzJYnrNnM8AryJ/1 UVlpF3Wt49Kts33y7ofChZZv6AYhrpIYBxOVIcYTwA== X-Google-Smtp-Source: ABdhPJwomKfBSqwR+h+1fkMj/2by+2A/Vt84AAJQdmIrZY7Vy9QHtS+zQ27ySQ7/GVl60lvKYvUjV5vijNwRvQFpL60= X-Received: by 2002:ac2:4d25:: with SMTP id h5mr13083965lfk.291.1624804869321; Sun, 27 Jun 2021 07:41:09 -0700 (PDT) MIME-Version: 1.0 References: <20210625235532.19575-1-dipenp@nvidia.com> In-Reply-To: From: Linus Walleij Date: Sun, 27 Jun 2021 16:40:58 +0200 Message-ID: Subject: Re: [RFC 00/11] Intro to Hardware timestamping engine To: Andy Shevchenko , Ye Xiang , Drew Fustini , Sandeep Singh Cc: Dipen Patel , Jarkko Nikula , Thierry Reding , Jon Hunter , Linux Kernel Mailing List , linux-tegra , "open list:GPIO SUBSYSTEM" , Bartosz Golaszewski , Kent Gibson , devicetree , Linux Documentation List , Rob Herring , Jonathan Cameron , linux-iio Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Sun, Jun 27, 2021 at 3:08 PM Andy Shevchenko wrote: > > To summarize upstream discussion: > > - It was heavily favoured by Linus and Kent to extend GPIOLIB and supporting > > GPIO drivers to add HTE functionality and I agreed to experiment with it. > > I guess this series should include more people from different > companies, especially documentation parts. This may be used by > different hardware and quite different vendors. Developing a framework > like this for only one vendor is no go in general. I forwarded patch 00 to the IIO list and Jonathan Cameron, and let's page Ye Xiang who made a bunch of contributions from Intel's side to IIO directly. (Hi Ye, please check this concept if you have time!) The actually most important target group would be people doing things like sensor fusion where a common timebase is important, I don't know who does really, but Sandeep Singh from AMD has contributed the AMD Sensor Fusion hub in drivers/hid/amd-sfh-hid and might know a few things about this though I don't think SFH would need this directly. https://en.wikipedia.org/wiki/Sensor_fusion Also Paging Drew Fustini, who knows a lot of maker and tinker people, he might know a bit about this or know someone who knows. Yours, Linus Walleij