linux-kernel - Re: [PATCH v2 2/2] dt-bindings: touchscreen: move ar1021.txt to trivial-touch.yaml

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Message-ID: <20251002030636.GA2975104-robh@kernel.org>
Date: Wed, 1 Oct 2025 22:06:36 -0500
From: Rob Herring <robh@...nel.org>
To: Frank Li <Frank.li@....com>
Cc: Conor Dooley <conor@...nel.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	"open list:INPUT (KEYBOARD, MOUSE, JOYSTICK, TOUCHSCREEN)..." <linux-input@...r.kernel.org>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" <devicetree@...r.kernel.org>,
	open list <linux-kernel@...r.kernel.org>, imx@...ts.linux.dev
Subject: Re: [PATCH v2 2/2] dt-bindings: touchscreen: move ar1021.txt to
 trivial-touch.yaml

On Wed, Oct 01, 2025 at 05:34:18PM -0400, Frank Li wrote:
> On Tue, Sep 30, 2025 at 08:05:56PM +0100, Conor Dooley wrote:
> > On Fri, Sep 26, 2025 at 02:47:12PM -0400, Frank Li wrote:
> > > ar1021 have only reg and interrupts property beside touch common
> > > properties. So move context of ar1021.txt into trivial-touch.yaml.
> > >
> > > Signed-off-by: Frank Li <Frank.Li@....com>
> > > ---
> > > change in v2
> > >  move to trivial-touch.yaml
> > >
> > > previous discussion
> > >     https://lore.kernel.org/imx/20250925-swimming-overspend-ddf7ab4a252c@spud/T/#t
> >
> > You mentioned there were a load of other devices using just these 3
> > properties. Do you intend moving those too?
> 
> I go through other yaml, I have not found more. But there are somes, which
> have one additonal properties reset-gpios.
> 
> If add 'reset-gpios' as optional property here, I can move more these into
> this files. But I am not sure if it is good idea to lose restriction or
> use if branch in trivial-touch.yaml.

That seems fine. Unless reset-gpios is required, I don't think you need 
an if/then schema. Even required probably doesn't make sense. Any board 
design could tie off the reset or make it not s/w controlled.

Rob