Re: Extending /memreserve/ to allow defining descriptions

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On Mon, Mar 06, 2017 at 04:12:59PM -0800, Florian Fainelli wrote:
> On 03/06/2017 03:28 PM, Stewart Smith wrote:
> > David Gibson <david@xxxxxxxxxxxxxxxxxxxxx> writes:
> >> What you could do is to add properties within the device tree further
> >> annotating the reservations, with the extra structure essentially just
> >> acting as an easy-to-parse summary of that.  In fact I know that POWER
> >> systems firmware use 'reserved-ranges' and 'reserved-names' properties
> >> for this.  I don't know if anyone else has adopted that though.
> > 
> > We've also been toying with the idea of creating a binding for "named
> > reserved memory range that should probably show up in debugfs"
> > 
> > I'd also be happy with a standard binding to do it.
> 
> Seems like
> Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt
> may be a good place to add descriptive properties about what these
> reserved regions are? The code parsing this also seems to be easily
> extensible with adding custom "name" properties.
> 
> Using "reserved-names" sounds like a good thing, I will be looking into
> submitting a binding update in the next few days, but if you beat me to
> it, happy to review it.
> 
> Tangential: is it me, or it's possible for /memreserve/'s address and
> size cells to disagree with #address-cells and #size-cells defined by
> the top-level node?

/memreserve/ has no address or size cells; they're simply 64-bit
integers.

-- 
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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