linux-kernel - Re: [PATCH v2 2/2] Input: edt-ft5x06

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Date: Fri, 5 Apr 2024 18:28:32 +0200
From: Andreas Kemnade <andreas@...nade.info>
To: Andy Shevchenko <andy.shevchenko@...il.com>
Cc: dmitry.torokhov@...il.com, robh+dt@...nel.org,
 krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
 o.rempel@...gutronix.de, u.kleine-koenig@...gutronix.de,
 hdegoede@...hat.com, ye.xingchen@....com.cn, p.puschmann@...onex.com,
 linux-input@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, caleb.connolly@...aro.org
Subject: Re: [PATCH v2 2/2] Input: edt-ft5x06 - add ft5426

On Fri, 5 Apr 2024 18:13:45 +0300
Andy Shevchenko <andy.shevchenko@...il.com> wrote:

> On Fri, Apr 5, 2024 at 1:20 AM Andreas Kemnade <andreas@...nade.info> wrote:
> >
> > As ft5426 seems to be compatible with this driver, add it.
> > Debug output during identification: Model "generic ft5x06 (79)", Rev. "  
> 
> ...
> 
> > @@ -1484,6 +1484,7 @@ static const struct of_device_id edt_ft5x06_of_match[] = {
> >         { .compatible = "edt,edt-ft5206", .data = &edt_ft5x06_data },
> >         { .compatible = "edt,edt-ft5306", .data = &edt_ft5x06_data },
> >         { .compatible = "edt,edt-ft5406", .data = &edt_ft5x06_data },
> > +       { .compatible = "focaltech,ft5426", .data = &edt_ft5506_data },  
> 
> 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? 
I sorted by the numbers. Looking at datasheets for other controllers I see
https://www.displayfuture.com/Display/datasheet/controller/FT5x06.pdf
it only mentions FocalTech Systems Co., Ltd.
So how the vendor prefixes are derived?

Regards,
Andreas