82xx multiple soc support/initialization

82xx multiple soc support/initialization

[Carl-Erwin GRIFFITH]

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Hi guys,


 I'm working on an derived muas3001 board (kernel version 2.6.30-rc5),

and so far I did not find an example of multiple SOCs initialization.

The board has 3 cpus (only one core activated).

1) Is there a special syntax to use in the device tree ?

2) Do the kernel provide an API to support multiple SOCs ?


Best regards,

Carl-Erwin Griffith

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Re: 82xx multiple soc support/initialization

[Scott Wood]

On Mon, May 25, 2009 at 04:23:37PM +0200, Carl-Erwin GRIFFITH wrote:
> Hi guys,
> 
> 
>  I'm working on an derived muas3001 board (kernel version 2.6.30-rc5),
> 
> and so far I did not find an example of multiple SOCs initialization.
> 
> The board has 3 cpus (only one core activated).

This is not currently supported -- there are lots of places, especially
in 82xx/CPM code, that assume there's only one instance of the SoC.

> 1) Is there a special syntax to use in the device tree ?

You'd have multiple instances of the soc node (plus kernel changes to
make this work).  You'll probably need some way of indicating which one
contains the running core.

-Scott