linux-kernel - Re: [PATCH v5 2/2] arm: pxa27x: support for ICP DAS LP-8x4x w/ DT

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Date:	Tue, 15 Dec 2015 18:02:19 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Sergei Ianovich <ynvich@...il.com>
Cc:	linux-kernel@...r.kernel.org, Daniel Mack <zonque@...il.com>,
	Robert Jarzmik <robert.jarzmik@...e.fr>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	Thierry Reding <treding@...dia.com>,
	Jonathan Cameron <jic23@...nel.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Arnaud Ebalard <arno@...isbad.org>,
	Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
	<devicetree@...r.kernel.org>,
	"moderated list:ARM PORT" <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v5 2/2] arm: pxa27x: support for ICP DAS LP-8x4x w/ DT

On Tuesday 15 December 2015 19:42:07 Sergei Ianovich wrote:
> On Tue, 2015-12-15 at 17:32 +0100, Arnd Bergmann wrote:
> > On Tuesday 15 December 2015 19:27:50 Sergei Ianovich wrote:
> > >  .../devicetree/bindings/vendor-prefixes.txt        |   1 +
> > >  arch/arm/boot/dts/Makefile                         |   3 +
> > >  arch/arm/boot/dts/pxa27x-lp8x4x-i105.dts           |  50 ++++
> > >  arch/arm/boot/dts/pxa27x-lp8x4x.dts                | 259
> > > +++++++++++++++++++++
> > >  arch/arm/configs/lp8x4x_defconfig                  | 176
> > > ++++++++++++++
> > > 
> > 
> > I had not noticed earlier that you are adding a new defconfig file.
> > PXA is
> > already the platform with the most defconfig files, and I'd rather
> > like
> > to see that reduced than increased.
> > 
> > Is there a chance you could merge this one with some of the existing
> > files
> > into one configuration that handles them all?
> 
> There are several board-specific devices on LP8x4x: custom FPGA, custom
> UART, custom IRQ on FPGA, custom parallel bus for industrial IO. The
> defconfig file could alert potential users to this fact. If this is not
> a sufficient reason to have a defconfig file, it can be dropped.
> 
> I use the full .config anyway 

I would like those drivers to be enabled in some defconfig, so we get
compile-time coverage, but we generally stopped having one-config-per-board
files.

Maybe we can have a pxa_defconfig file that enables lots of boards
and then we remove the individual configs? We don't have to remove
them all at once, but it would make me very happy if we could at
least kill off some of the ones that are not used regularly.

	Arnd
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