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

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Message-Id: <200807151500.17197.mb@bu3sch.de>
Date:	Tue, 15 Jul 2008 15:00:16 +0200
From:	Michael Buesch <mb@...sch.de>
To:	Ben Nizette <bn@...sdigital.com>
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>,
	Pierre Ossman <drzeus-mmc@...eus.cx>,
	openwrt-devel@...ts.openwrt.org
Subject: Re: [PATCH] Add dynamic MMC-over-SPI-GPIO driver

On Tuesday 15 July 2008 07:06:49 Ben Nizette wrote:
> 
> On Mon, 2008-07-14 at 21:09 +0200, Michael Buesch wrote:
> > This driver provides a sysfs interface to dynamically create
> > and destroy GPIO-based MMC/SD card interfaces.
> > So an MMC or SD card can be connected to generic GPIO pins
> > and be configured dynamically from userspace.
> 
> Can you use mmc-spi attached to spi-gpio and be done with it?

This is _exactly_ what this module does. It combines mmc-spi and
spi-gpio and creates an actual device for them.

> Sure you 
> won't have the dynamic alloc capability but you won't be reinventing the
> wheel either.

This does not reinvent anything. It just wires up the two modules.

-- 
Greetings Michael.
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