linux-kernel - Re: [PATCH v3 01/13] PM / Domains: Add genpd attach/detach callbacks

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Message-ID: <7heguy4c4p.fsf@deeprootsystems.com>
Date:	Fri, 26 Sep 2014 08:47:34 -0700
From:	Kevin Hilman <khilman@...nel.org>
To:	Geert Uytterhoeven <geert+renesas@...der.be>
Cc:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Simon Horman <horms@...ge.net.au>,
	Magnus Damm <magnus.damm@...il.com>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Tomasz Figa <tomasz.figa@...il.com>,
	Philipp Zabel <philipp.zabel@...il.com>,
	Grygorii Strashko <grygorii.strashko@...com>,
	linux-sh@...r.kernel.org, linux-pm@...r.kernel.org,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 01/13] PM / Domains: Add genpd attach/detach callbacks

Geert Uytterhoeven <geert+renesas@...der.be> writes:

> While a PM domain can enable PM runtime management of its devices' module
> clocks by setting
>
> 	genpd->dev_ops.stop = pm_clk_suspend;
> 	genpd->dev_ops.start = pm_clk_resume;
>
> this also requires registering the clocks with the pm_clk subsystem.
> In the legacy case, this is handled by the platform code, after
> attaching the device to its PM domain.
>
> When the devices are instantiated from DT, devices are attached to their
> PM domains by generic code, leaving no method for the platform-specific
> PM domain code to register their clocks.
>
> Add two callbacks, allowing a PM domain to perform platform-specific
> tasks when a device is attached to or detached from a PM domain.
>
> Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
> Reviewed-by: Ulf Hansson <ulf.hansson@...aro.org>

I replied to the previous RFC, but just to be thorough (and because I
like this approach):

Reviewed-by: Kevin Hilman <khilman@...aro.org>

Kevin
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