linux-kernel - Re: Handling of modular boards

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 4 May 2012 21:03:34 +0000
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Wolfgang Denk <wd@...x.de>, Samuel Ortiz <sameo@...ux.intel.com>,
	linux-embedded@...r.kernel.org,
	Stephen Warren <swarren@...dotorg.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	linux-kernel@...r.kernel.org,
	Igor Grinberg <grinberg@...pulab.co.il>,
	Olof Johansson <olof@...om.net>,
	Lee Jones <lee.jones@...aro.org>
Subject: Re: Handling of modular boards

On Friday 04 May 2012, Wolfgang Denk wrote:
> There are systems (and I bet it will be a growing number) where U-Boot
> itself uses the DT for configuration.  Also, there are functions that
> are needed both by the boot loader and the kernel - for example to
> dislay a splash screen the boot loader needs to initialize the
> display, so it must be able to detect which type of LCD is attached
> (resolution, color-depth, orientation) - the device tree comes in very
> handy here.  Why should Linux re-do all such things?

Sure, there are a lot of things that the boot loader can use from the
device tree, but I'm not sure if the LCD panel connection fits into
the same category as the devices that Mark was thinking of.

Anyway, display controllers are definitely something that needs to
be handled in some way, which may or may not be the same way we
handle more complex collections of arbitrary devices.

	Arnd
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/