linux-kernel - Re: [PATCH] SPI: SSP SPI Controller driver v3

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Message-ID: <20130107103642.GQ13897@intel.com>
Date:	Mon, 7 Jan 2013 12:36:42 +0200
From:	Mika Westerberg <mika.westerberg@...ux.intel.com>
To:	Linus Walleij <linus.walleij@...aro.org>
Cc:	channing <chao.bi@...el.com>, grant.likely@...retlab.ca,
	linux-kernel@...r.kernel.org, sylvain.centelles@...el.com,
	ken.k.mills@...el.com, jun.d.chen@...el.com, alan@...ux.intel.com
Subject: Re: [PATCH] SPI: SSP SPI Controller driver v3

On Mon, Jan 07, 2013 at 11:21:04AM +0100, Linus Walleij wrote:
> On Mon, Jan 7, 2013 at 9:05 AM, channing <chao.bi@...el.com> wrote:
> 
> > Frankly I'm currently not sure whether they share same IP.. per your reminds, I tried to find but get
> > limited info about PXA SSP's IP, from the code, looks like they have part of registers the same.
> >
> > As far as I know, spi-pxa2xx.c is specific for SSP controller of PXA2XX/PXA3XX core, right?
> 
> As pointed out by Mika it may very well be the same IP anyway. People copy/paste
> share and fork VHDL/Verilog/SystemC code just as much as they do with
> kernel code.

Yes, at least on Intel Lynxpoint it is the same IP with few additional
features. I'm about to send patches to spi-pxa2xx which enable the
Lynxpoint support shortly.
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