linux-kernel - Re: Nokia N900: Proper C-states

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Message-ID: <20160211174750.GV19432@atomide.com>
Date:	Thu, 11 Feb 2016 09:47:50 -0800
From:	Tony Lindgren <tony@...mide.com>
To:	Pali Rohár <pali.rohar@...il.com>
Cc:	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Jean Pihet <j-pihet@...com>,
	Santosh Shilimkar <santosh.shilimkar@...com>,
	Kevin Hilman <khilman@...com>, Nishanth Menon <nm@...com>,
	Pavel Machel <pavel@....cz>,
	Aaro Koskinen <aaro.koskinen@....fi>,
	Sebastian Reichel <sre@...nel.org>,
	Ivaylo Dimitrov <ivo.g.dimitrov.75@...il.com>,
	linux-omap@...r.kernel.org, linux-kernel@...r.kernel.org,
	Lorenzo Pieralisi <Lorenzo.Pieralisi@....com>
Subject: Re: Nokia N900: Proper C-states

* Pali Rohár <pali.rohar@...il.com> [160211 07:03]:
> > On 02/09/2016 04:56 PM, Tony Lindgren wrote:
> > >I'm almost certain those values are not n900 specific but should be
> > >used for omap3430 in general.
> 
> cpuidle parameters for Nokia N900 were added by this commit:
> 
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5a1b1d3a9efad6bd53d01ff02e86626d1a51d697
> 
> which says:
> 
> Numbers based on measurements made in October 2009 for PM optimized
> kernel with CPU freq enabled.
> 
> Tony, do you have any other omap3430 device?

Yes I can make sure it works for omap3-ldp for a minimal case.
That's a 3430 ES 3.0 that's a GP SoC.

Regards,

Tony