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From: Andy Shevchenko <andy.shevchenko@gmail.com>
Date: Fri, 5 Apr 2024 20:21:19 +0300
Message-ID: <CAHp75VckoDheCN-KQ0KcSk9rE_-cXFUujurtA4sK6KAixDttQQ@mail.gmail.com>
Subject: Re: [PATCH v2 2/2] Input: edt-ft5x06 - add ft5426
To: Andreas Kemnade <andreas@kemnade.info>
Cc: dmitry.torokhov@gmail.com, robh+dt@kernel.org, 
	krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, 
	o.rempel@pengutronix.de, u.kleine-koenig@pengutronix.de, hdegoede@redhat.com, 
	ye.xingchen@zte.com.cn, p.puschmann@pironex.com, linux-input@vger.kernel.org, 
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, 
	caleb.connolly@linaro.org
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On Fri, Apr 5, 2024 at 7:28=E2=80=AFPM Andreas Kemnade <andreas@kemnade.inf=
o> wrote:
> On Fri, 5 Apr 2024 18:13:45 +0300
> Andy Shevchenko <andy.shevchenko@gmail.com> wrote:
> > On Fri, Apr 5, 2024 at 1:20=E2=80=AFAM Andreas Kemnade <andreas@kemnade=
info> wrote:

..

> > > @@ -1484,6 +1484,7 @@ static const struct of_device_id edt_ft5x06_of_=
match[] =3D {
> > >         { .compatible =3D "edt,edt-ft5206", .data =3D &edt_ft5x06_dat=
a },
> > >         { .compatible =3D "edt,edt-ft5306", .data =3D &edt_ft5x06_dat=
a },
> > >         { .compatible =3D "edt,edt-ft5406", .data =3D &edt_ft5x06_dat=
a },
> > > +       { .compatible =3D "focaltech,ft5426", .data =3D &edt_ft5506_d=
ata },
> >
> > Why a different vendor prefix?
> > In case you need to use this one, keep the list sorted, currently this
> > splits the edt,* ones.
> >
> How do I know whether to use evervision or edt instead?

Ask DT people, the vendor-prefixes lists both...

> I sorted by the numbers. Looking at datasheets for other controllers I se=
e
> https://www.displayfuture.com/Display/datasheet/controller/FT5x06.pdf
> it only mentions FocalTech Systems Co., Ltd.

But does the driver use that? AFAICS it uses edt. Perhaps it's due to
a business split, not to my knowledge anyway.

> So how the vendor prefixes are derived?

Rob, Krzysztof?

--=20
With Best Regards,
Andy Shevchenko