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Date: Sat, 8 Jun 2024 21:20:04 +0200
From: Andreas Kemnade <andreas@kemnade.info>
To: Adam Ford <aford173@gmail.com>
Cc: Luiz Augusto von Dentz <luiz.dentz@gmail.com>, marcel@holtmann.org,
 johan@kernel.org, pmenzel@molgen.mpg.de, jirislaby@kernel.org,
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 <peter.ujfalusi@gmail.com>, robh@kernel.org, hns@goldelico.com
Subject: Re: [PATCH v4 0/4] Bluetooth/gnss: GNSS support for TiWi chips
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Hi Adam,

On Sat, 8 Jun 2024 14:00:38 -0500
Adam Ford <aford173@gmail.com> wrote:

> On Thu, Jun 6, 2024 at 3:19=E2=80=AFPM Andreas Kemnade <andreas@kemnade.i=
nfo> wrote:
> >
> > Hi Luiz,
> >
> > On Thu, 6 Jun 2024 16:04:10 -0400
> > Luiz Augusto von Dentz <luiz.dentz@gmail.com> wrote:
> > =20
> > > Hi Andreas,
> > >
> > > On Thu, Jun 6, 2024 at 2:30=E2=80=AFPM Andreas Kemnade <andreas@kemna=
de.info> wrote: =20
> > > >
> > > > Some of these chips have GNSS support. In some vendor kernels
> > > > a driver on top of misc/ti-st can be found providing a /dev/tigps
> > > > device which speaks the secretive Air Independent Interface (AI2) p=
rotocol. =20
>=20
> I think you may have sent me a file to test, but I can't find the
> e-mail.   Can you tell me what tool you used to test it?  I can get
> gnss0 to enumerate, so I am close.
>=20
hmm, /bin/cat is sufficient. It should spit out nmea now by default.

For playing around with raw mode, you need the ai2raw parameter
and then you can play around with read-gps from=20
https://github.com/akemnade/bt200tools

> [   20.759857] hci-ti serial0-0: using DT
> '/ocp@68000000/serial@4806c000/bluetooth-gnss' for 'enable' GPIO
> lookup
> [   20.770263] of_get_named_gpiod_flags: parsed 'enable-gpios'
> property of node '/ocp@68000000/serial@4806c000/bluetooth-gnss[0]' -
> status (0)
> [   29.221588] gnss: GNSS driver registered with major 244
>=20
That is nice.

Regards,
Andreas