netdev - Re: [PATCH v2] net: cadence: Add architecture dependencies

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Message-ID: <20140423100442.GK12304@sirena.org.uk>
Date:	Wed, 23 Apr 2014 11:04:42 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Jean Delvare <jdelvare@...e.de>
Cc:	monstr@...str.eu, netdev@...r.kernel.org,
	Nicolas Ferre <nicolas.ferre@...el.com>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robh+dt@...nel.org>
Subject: Re: [PATCH v2] net: cadence: Add architecture dependencies

On Wed, Apr 23, 2014 at 09:40:10AM +0200, Jean Delvare wrote:
> On Wed, 23 Apr 2014 09:16:49 +0200, Michal Simek wrote:

> > > Cadence are an IP company,

> I can't parse this, sorry. What is an "IP company"?

They sell designs for blocks that can be used to build hardware rather
than physical objects or complete chips and they are independant of chip
vendors.  There are a number of other companies that do this, people
like Designware for example, and while ARM do obviously do architectures
they are also a generic soft IP company as well.  This means that for
those companies (and sometimes others) you can't assume that just
because it's used on some architecture that doesn't mean it's used on
others.

> > > might be worth having a FPGA
> > > Kconfig that architectures commonly deployed with lots of soft IPs can
> > > select and the IPs depend on rather than building a custom list for each
> > > IP.

> What are "soft IPs"? I'm afraid I wouldn't be able to translate your
> proposal into a patch, I just don't understand what you mean exactly.

Components used in the design of hardware sold by the above companies.
Several architectures (at least ARM, Microblaze and PowerPC) are
available in chips where most of the chip is a FPGA.

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