linux-kernel - Re: [RFC PATCH 02/10] MIPS: Octeon: Add device tree source files.

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Message-ID: <20110224231923.GB18233@yookeroo>
Date:	Fri, 25 Feb 2011 10:19:23 +1100
From:	David Gibson <david@...son.dropbear.id.au>
To:	David Daney <ddaney@...iumnetworks.com>
Cc:	linux-mips@...ux-mips.org, ralf@...ux-mips.org,
	devicetree-discuss@...ts.ozlabs.org, grant.likely@...retlab.ca,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 02/10] MIPS: Octeon: Add device tree source files.

On Wed, Feb 23, 2011 at 08:59:29AM -0800, David Daney wrote:
> On 02/22/2011 04:07 PM, David Gibson wrote:
> >On Tue, Feb 22, 2011 at 12:57:46PM -0800, David Daney wrote:
> >>Signed-off-by: David Daney<ddaney@...iumnetworks.com>
> >>---
> >>  arch/mips/cavium-octeon/.gitignore      |    2 +
> >>  arch/mips/cavium-octeon/Makefile        |   13 ++
> >>  arch/mips/cavium-octeon/octeon_3xxx.dts |  314 +++++++++++++++++++++++++++++++
> >>  arch/mips/cavium-octeon/octeon_68xx.dts |   99 ++++++++++
> >>  4 files changed, 428 insertions(+), 0 deletions(-)
> >>  create mode 100644 arch/mips/cavium-octeon/.gitignore
> >>  create mode 100644 arch/mips/cavium-octeon/octeon_3xxx.dts
> >>  create mode 100644 arch/mips/cavium-octeon/octeon_68xx.dts
> >>
> [...]
> 
> >>+    };
> >>+  };
> >
> >Uh.. where are the CPUs?
> >
> 
> The number and type of CPUs can be (and is) probed.  There is an
> existing mechanism for the bootloader to communicate which CPUs
> should be used.

Hrm, ok.

Grant,

We've seen this now on both MIPS and ARM - dts files with no cpus, on
the grounds that those can be runtime probed.  I guess it makes sense,
although a dts without cpus looks very, very odd to me.  What are your
thoughts on this?

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson
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