linux-kernel - Re: [PATCHv2 1/3] Input: twl4030-keypad

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Message-ID: <20131029010608.GA5353@earth.universe>
Date:	Tue, 29 Oct 2013 02:06:08 +0100
From:	Sebastian Reichel <sre@...ian.org>
To:	Kumar Gala <galak@...eaurora.org>
Cc:	linux-input@...r.kernel.org,
	"'Benoît Cousson'" <bcousson@...libre.com>,
	Tony Lindgren <tony@...mide.com>,
	Rob Herring <rob.herring@...xeda.com>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Stephen Warren <swarren@...dotorg.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Rob Landley <rob@...dley.net>,
	Russell King <linux@....linux.org.uk>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Grant Likely <grant.likely@...aro.org>,
	devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-omap@...r.kernel.org
Subject: Re: [PATCHv2 1/3] Input: twl4030-keypad - add device tree support

On Mon, Oct 28, 2013 at 01:42:47AM -0500, Kumar Gala wrote:
> > +This binding is based on the matrix-keymap binding with the following
> > +changes:
> 
> Maybe be a bit more specific and say 'based on the input/matrix-keymap.txt binding'..

OK.

> > + * keypad,num-rows and keypad,num-columns are required.
> 
> Is linux,keymap required from matrix-keymap.txt?

Yes, matrix-keymap.txt contains descriptions for the following:

required:
 - linux,keymap
optional:
 - keypad,num-rows
 - keypad,num-columns

> > +Optional Properties specific to linux:
> > +- linux,keypad-no-autorepeat: do no enable autorepeat feature.
> 
> Does it make sense to update the matrix-keymap.txt binding to add
> 'linux,keypad-no-autorepeat' there?

At least according to devicetree documentation there are
keymap-matrix.txt based drivers, which do not support
"linux,keypad-no-autorepeat".

-- Sebastian

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