Re: [PATCH] Add SPI over GPIO driver

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From: Michael Buesch
Date: Tuesday, July 15, 2008 - 6:05 am

On Tuesday 15 July 2008 07:30:51 Ben Nizette wrote:

Because the hardware _is_ hotpluggable.


I'm not sure why we should limit ourselves so much by compiling
dynamic and completely individual information, like the bus
wireing into the kernel.
This _has_ to be dynamic, as the wireing is _completely_ random and
different for every machine. This is selfmade hardware. ;)


This is to support running MMCs/SDs on GPIO pins.
Which board or card provides the GPIO pins doesn't matter. It doesn't
matter, as it's completely abstracted. You can even run 10 or more
of the cards at the same time, if you have enough GPIO pins.

Of course, this is mostly useful for embedded systems only.
But it is not bound to any specific type of hardware. The hardware just
has to implement generic GPIO for its GPIO pins.

-- 
Greetings Michael.
--
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Messages in current thread:
[PATCH] Add SPI over GPIO driver, Michael Buesch, (Mon Jul 14, 12:09 pm)
Re: [PATCH] Add SPI over GPIO driver, Andrew Morton, (Mon Jul 14, 1:43 pm)
Re: [PATCH] Add SPI over GPIO driver, Ben Nizette, (Mon Jul 14, 10:30 pm)
Re: [PATCH] Add SPI over GPIO driver, Michael Buesch, (Tue Jul 15, 5:52 am)
Re: [PATCH] Add SPI over GPIO driver, Michael Buesch, (Tue Jul 15, 6:05 am)