linux-kernel - Re: [for-next PATCH V2] PM / devfreq: Add sysfs node to expose available frequencies

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Message-id: <16123783.160701351232196244.JavaMail.weblogic@epv6ml08>
Date:	Fri, 26 Oct 2012 06:16:38 +0000 (GMT)
From:	MyungJoo Ham <myungjoo.ham@...sung.com>
To:	Nishanth Menon <nm@...com>, linux-pm <linux-pm@...r.kernel.org>
Cc:	Rajagopal Venkat <rajagopal.venkat@...aro.org>,
	박경민 <kyungmin.park@...sung.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>, Kevin Hilman <khilman@...com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [for-next PATCH V2] PM / devfreq: Add sysfs node to expose
 available frequencies

> devfreq governors such as ondemand are controlled by a min and
> max frequency, while governors like userspace governor allow us
> to set a specific frequency.
> However, for the same specific device, depending on the SoC, the
> available frequencies can vary.
> 
> So expose the available frequencies as a snapshot over sysfs to
> allow informed decisions.
> 
> This was inspired by cpufreq framework's equivalent for similar
> usage sysfs node: scaling_available_frequencies.
> 
> Cc: Rajagopal Venkat <rajagopal.venkat@...aro.org>
> Cc: MyungJoo Ham <myungjoo.ham@...sung.com>
> Cc: Kyungmin Park <kyungmin.park@...sung.com>
> Cc: "Rafael J. Wysocki" <rjw@...k.pl>
> Cc: Kevin Hilman <khilman@...com>
> Cc: linux-pm@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org
> 
> Signed-off-by: Nishanth Menon <nm@...com>

Acked-by: MyungJoo Ham <myungjoo.ham@...sung.com>