linux-kernel - Re: [RFC][PATCH 0/14] PM / shmobile: Pass power domain information via DT (was: Re: [RFD] PM: Device tree representation of power domains)

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Message-ID: <20120726215543.GJ4560@opensource.wolfsonmicro.com>
Date:	Thu, 26 Jul 2012 22:55:43 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Kevin Hilman <khilman@...com>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>, Arnd Bergmann <arnd@...db.de>,
	devicetree-discuss@...ts.ozlabs.org,
	Linux PM list <linux-pm@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Matthew Garrett <mjg59@...f.ucam.org>,
	Magnus Damm <magnus.damm@...il.com>,
	Grant Likely <grant.likely@...retlab.ca>,
	Linux-sh list <linux-sh@...r.kernel.org>,
	Benoit Cousson <b-cousson@...com>
Subject: Re: [RFC][PATCH 0/14] PM / shmobile: Pass power domain information
 via DT (was: Re: [RFD] PM: Device tree representation of power domains)

On Thu, Jul 26, 2012 at 02:45:52PM -0700, Kevin Hilman wrote:

> Ideally, we will eventually have a representation that can map
> from regulators all the way down to IP blocks.  regulator --> voltage
> domain --> power domain --> clock domain --> clocks --> IP block.

Well, often the clock bit is something of a noop - a lot of SoCs can
reparent the IP block clocks between the different clock domains happily
and have core clock domains that are mostly orthogonal to the power
domains.  But yes.

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