linux-kernel - Re: [PATCH v2 3/4] ARM: dts: exynos5250: Fold common ChromeOS parts into Snow

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Date:	Tue, 29 Jul 2014 16:39:19 +0200
From:	Javier Martinez Canillas <javier@...hile0.org>
To:	Andreas Färber <afaerber@...e.de>
Cc:	Doug Anderson <dianders@...omium.org>,
	"linux-samsung-soc@...r.kernel.org" 
	<linux-samsung-soc@...r.kernel.org>,
	Stephan van Schaik <stephan@...khronix.com>,
	Vincent Palatin <vpalatin@...omium.org>,
	Ben Dooks <ben-linux@...ff.org>,
	Kukjin Kim <kgene.kim@...sung.com>,
	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>,
	"moderated list:ARM/SAMSUNG ARM A..." 
	<linux-arm-kernel@...ts.infradead.org>,
	"open list:OPEN FIRMWARE AND..." <devicetree@...r.kernel.org>,
	open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 3/4] ARM: dts: exynos5250: Fold common ChromeOS parts
 into Snow

Hello Andreas,

On Tue, Jul 29, 2014 at 3:00 PM, Andreas Färber <afaerber@...e.de> wrote:
> Hi Javier and Doug,
>
>
> Hm, in different context it was stated that device trees shouldn't rely
> on bootloader behavior (for a /memory node on Zynq we ended up
> specifying the size cell with the real value despite U-Boot overriding
> it to a lesser value).
>

Well is not strictly the same, the memory node is a hardware
description while the chosen node is one of those exceptional nodes
that don't represent a real device. Also the usage for the memory node
is marked as required in ePAR while the later is marked as optional.

> Can we instead settle on filling this node with defaults? :)
> bootargs = "console=tty1"; would be my choice for Spring. Would that be
> applicable for Snow as well?
> Not sure how to specify that via linux,stdout-path property.
>
> I believe this would be a follow-up patch either way.
>
> Since there's at least two series out there trying to fiddle with
> -cros-common.dtsi, including one that drops the slot sub-node of the MMC
> and one that adds CPU power supply, it would be nice if we can get the
> -cros-common parts sorted out and applied. Can you ack/review 1-2?
> Should I squash them in a v3?
>

A sensible default makes sense to me and yes it should be a follow-up
patch anyways.

> Thanks,
> Andreas
>
> --

Best regards,
Javier
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