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From:   Linus Walleij <linus.walleij@linaro.org>
Date:   Sun, 27 Jun 2021 16:40:58 +0200
Message-ID: <CACRpkdbXE2A98P0_juA9PNEKTo89FcgywYmnqJSC5bV+Vox=Fw@mail.gmail.com>
Subject: Re: [RFC 00/11] Intro to Hardware timestamping engine
To:     Andy Shevchenko <andy.shevchenko@gmail.com>,
        Ye Xiang <xiang.ye@intel.com>,
        Drew Fustini <drew@beagleboard.org>,
        Sandeep Singh <sandeep.singh@amd.com>
Cc:     Dipen Patel <dipenp@nvidia.com>,
        Jarkko Nikula <jarkko.nikula@linux.intel.com>,
        Thierry Reding <thierry.reding@gmail.com>,
        Jon Hunter <jonathanh@nvidia.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        linux-tegra <linux-tegra@vger.kernel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>,
        Bartosz Golaszewski <bgolaszewski@baylibre.com>,
        Kent Gibson <warthog618@gmail.com>,
        devicetree <devicetree@vger.kernel.org>,
        Linux Documentation List <linux-doc@vger.kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Jonathan Cameron <jic23@kernel.org>,
        linux-iio <linux-iio@vger.kernel.org>
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On Sun, Jun 27, 2021 at 3:08 PM Andy Shevchenko
<andy.shevchenko@gmail.com> 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