linux-kernel - Re: Making ARM multiplatform kernels DT-only?

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Message-ID: <CACRpkdZ3m=PXg35==3wo2xHPL7TRn1W0AX_CeMKjPd1U+pTAGQ@mail.gmail.com>
Date:	Fri, 4 May 2012 22:03:40 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
Cc:	Wookey <wookey@...kware.org>, Kukjin Kim <kgene.kim@...sung.com>,
	linaro-dev@...ts.linaro.org, Jason Cooper <jason@...edaemon.net>,
	Arnd Bergmann <arnd@...db.de>,
	Nicolas Pitre <nico@...xnic.net>,
	Tony Lindgren <tony@...mide.com>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Magnus Damm <magnus.damm@...il.com>,
	linux-kernel@...r.kernel.org, Olof Johansson <olof@...om.net>,
	Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: Making ARM multiplatform kernels DT-only?

On Fri, May 4, 2012 at 4:35 PM, Russell King - ARM Linux
<linux@....linux.org.uk> wrote:

> Well, my understanding is that there's DT patches around for Versatile.

Is there? There is some in-tree stuff, but haven't seen any other
sign of patches.

Having looked a bit at that I get the impression that this DT code has
been developed (by Grant I guess) in QEMU only as a proof of concept,
and never really tested on a real Versatile hardware unit.

These:
http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=7390/1
http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=7391/1

make it clear that noone ever tested an MMC card on a Versatile
booted on real hardware using DT. And I strongly suspect there
are more instances like that, it seems AACI, GPIO and I2C and
I guess whatever you cannot test on QEMU is just unsupported.

But maybe the majority of Versatile users are on QEMU anyway,
I sometimes get that impression :-/

Yours,
Linus Walleij
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