linux-kernel - Re: Handling of modular boards

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Message-ID: <CACRpkdbyp=BNGn8Eub6vcAgB9CS5PhYcGt2foi8kNxA3oU5Fzg@mail.gmail.com>
Date:	Tue, 8 May 2012 14:33:38 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Alessandro Rubini <rubini@...dd.com>
Cc:	Stephen Warren <swarren@...dotorg.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	linux-embedded@...r.kernel.org, linux-kernel@...r.kernel.org,
	Igor Grinberg <grinberg@...pulab.co.il>,
	Olof Johansson <olof@...om.net>, Arnd Bergmann <arnd@...b.de>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: Handling of modular boards

On Fri, May 4, 2012 at 10:44 PM, Mark Brown
<broonie@...nsource.wolfsonmicro.com> wrote:
> On Fri, May 04, 2012 at 01:50:01PM -0600, Stephen Warren wrote:
>
>> b) Doesn't integrate well with hotplug; the DT for the board
>> configuration is static at boot. What if a board can be unplugged and
>> another plugged in; a reboot or similar would be needed to adjust the
>> kernel to this.
>
> This is another issue - a similar set of problems does apply to some PCI
> type cards where the PCI device is essentially a bridge to a typical
> embedded system - though practically speaking it's much less severe.

I think Alessandro is working on a board like that right now, so looping
in Ale to this discussion to get his attention...

Linus Walleij
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