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

[Ralf Baechle <ralf@linux-mips.org>]

On Wed, Feb 23, 2011 at 11:07:59AM +1100, David Gibson wrote:

> Uh.. where are the CPUs?

CPUs are probed the old style way on MIPS.  There is a large number of
varieties of CPUs - things like cache size, cache line size, architectural
extension and many small details of behaviour differ.  If we'd fully
honor DT CPU configuration information a kernel would need to have fairly
full blown generic CPU support for anything under the sun.  But there
already is a scheme that allows platform support code to select permanet
enablement, disablement or runtime probe for every CPU feature under the
sun for significant code savings and performance gain.

  Ralf