linux-kernel - Re: [PATCH] Add SPI over GPIO driver

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Date:	Tue, 15 Jul 2008 15:30:51 +1000
From:	Ben Nizette <bn@...sdigital.com>
To:	Michael Buesch <mb@...sch.de>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	David Brownell <david-b@...bell.net>,
	Piot Skamruk <piotr.skamruk@...il.com>,
	openwrt-devel@...ts.openwrt.org
Subject: Re: [PATCH] Add SPI over GPIO driver

On Mon, 2008-07-14 at 21:09 +0200, Michael Buesch wrote:
> This adds a driver that lets you drive an SPI bus over
> generic GPIO pins.

Right, this is where spi-gpio is, please disregard my question in the
mmc-spi-gpio thing thread, it was domestic blindness after all :-)

Looks good overall.  I'm not sure that it need pretend to be
hotpluggable though (i.e. the board info can be hardwired so there's no
need for the board setup callback).  I guess this is to integrate with
your "dynamically create an mmc over spi over gpio" thinggy in the other
thread.  As I said there, I'd prefer that this platform device is
treated like other platform devices and any dynamicness be introduced at
in a more generic way.

What problem are you solving (or whole in board support are you
plugging) in this dynamic plugging of MMCs?

Thanks,
	--Ben.

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