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Subject: Re: [PATCH v2 0/8] gnss: add new GNSS subsystem
From:   "H. Nikolaus Schaller" <hns@goldelico.com>
In-Reply-To: <20180531085242.GE3259@localhost>
Date:   Thu, 31 May 2018 11:52:18 +0200
Cc:     Richard Cochran <richardcochran@gmail.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Rob Herring <robh+dt@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Andreas Kemnade <andreas@kemnade.info>,
        Arnd Bergmann <arnd@arndb.de>, Pavel Machek <pavel@ucw.cz>,
        Marcel Holtmann <marcel@holtmann.org>,
        Sebastian Reichel <sebastian.reichel@collabora.co.uk>,
        Tony Lindgren <tony@atomide.com>, linux-kernel@vger.kernel.org,
        devicetree@vger.kernel.org
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References: <20180530103242.20773-1-johan@kernel.org> <20180530143822.lvtwjvbqe7gvbvgq@localhost> <20180531085242.GE3259@localhost>
To:     Johan Hovold <johan@kernel.org>
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> Am 31.05.2018 um 10:52 schrieb Johan Hovold <johan@kernel.org>:
>=20
> On Wed, May 30, 2018 at 07:38:22AM -0700, Richard Cochran wrote:
>> On Wed, May 30, 2018 at 12:32:34PM +0200, Johan Hovold wrote:
>>> Another possible extension is to add generic 1PPS support.
>>=20
>> There are two possibilities to consider.
>>=20
>> 1. If the PPS causes an interrupt, then it should hook into the PPS
>>   subsystem.
>=20
> Registering a PPS child device is what I had in mind for this.

This seems to be duplicating functionality that is already solved by

=
https://elixir.bootlin.com/linux/v4.17-rc7/source/Documentation/devicetree=
/bindings/pps/pps-gpio.txt

and

=
https://elixir.bootlin.com/linux/v4.17-rc7/source/drivers/pps/clients/pps-=
gpio.c

Or what is bad with just using that?

BR,
Nikolaus