[PATCH 1/2] powerpc: document the MPIC device tree binding
B08248 at freescale.com
Thu Jan 20 09:14:42 EST 2011
> +** Optional properties:
> + - no-reset : The presence of this property indicates that the MPIC
> + should not be reset during runtime initialization.
> + - protected-sources : Specifies a list of interrupt sources that are
> + not
> + available for use and whose corresponding
> + vectors
> + should not be initialized. A typical use case
> + for
> + this property is in AMP systems where multiple
> + independent operating systems need to share
> + the MPIC
> + without clobbering each other.
Is "protected-sources" really needed for AMP systems to
tell the OSes not to clobber each other? Won't each
OS be given a device tree with only its interrupt
sources? ...so you know what you are allowed to touch.
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