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From: David Brownell <david-b@pacbell.net>
To: "Piotr Skamruk" <piotr.skamruk@gmail.com>
Subject: Re: [PATCH v3] Add SPI over GPIO driver
Date: Sat, 18 Oct 2008 13:54:23 -0700
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Cc: "Michael Buesch" <mb@bu3sch.de>,
       "Andrew Morton" <akpm@linux-foundation.org>,
       "Magnus Damm" <magnus.damm@gmail.com>,
       "Stephen Rothwell" <sfr@canb.auug.org.au>,
       linux-kernel <linux-kernel@vger.kernel.org>
References: <200807202146.12759.mb@bu3sch.de> <200810181132.24233.mb@bu3sch.de> <6179c79b0810181341g584d0466s6a2abb68b786be38@mail.gmail.com>
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On Saturday 18 October 2008, Piotr Skamruk wrote:
> 2008/10/18 Michael Buesch <mb@bu3sch.de>:
> > On Saturday 18 October 2008 06:36:31 Andrew Morton wrote:
> >> This patch has some "issues" a month or so ago.  Current status is that
> >
> > yeah, upstream maintainers don't like these patches.
> > Please drop this one and the "gpiommc" patch now.
> >
> As i remember - David stands that these patches (or even
> functionality) are not usable for him, so he don't want to see them in
> mainstream kernel sources. It's his choice, he is maintainer of this
> subsystem.

That patch is very limited, and wrong in several respects.

I fully support the idea of SPI over GPIO.  It's just that
particular patch which is problematic.


> You have this on openwrt svn, I have it on my dev gittree - and as You
> can see on Magnus example - anybody interested can google for it.
> Maybe if there will be next few peoples - David will change his
> opinion on this subject...

I'm sanity testing a refresh of the *original* late-2006
SPI-over-GPIO driver.  It's actually usable as a drop-in
replacement for a "native" driver.

Unfortunately I goofed and pulled down the current GIT tree
and found lots of unrelated breakage (non-SPI) that's keept
that sanity test from proceeding apace.  And the board on
which it's most recently been used is currently broken.
I may just send that patch out soon, as an FYI...

- Dave

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