linux-kernel - Re: [PATCH 1/3] Input: add STMicroelectronics FingerTip touchscreen driver

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Message-id: <20170118011248.6wlcog5r4jkgaat4@gangnam.samsung>
Date:   Wed, 18 Jan 2017 10:12:48 +0900
From:   Andi Shyti <andi.shyti@...sung.com>
To:     Krzysztof Kozlowski <krzk@...nel.org>
Cc:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Javier Martinez Canillas <javier@....samsung.com>,
        linux-input@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
        Andi Shyti <andi@...zian.org>
Subject: Re: [PATCH 1/3] Input: add STMicroelectronics FingerTip touchscreen
 driver

Hi Krzysztof,

> > +Optional properties:
> > +- touch-key-connected	: specifies whether the touchkey feature is connected
> 
> You are making it a generic property but it is specific to this device,
> so:
> 	st,touch-key-connected
> ?
> 
> > +- ledvdd-supply		: power supply to the touch key leds
> 
> Is this really optional? If yes... how it gets the power when not
> provided?

yes, it is. This is required only if (st,)touch-key-connected is
added, it's not required in any other case. Anyway, even if not
present, the device works, just without leds, which is fine for
me.

Thanks,
Andi