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From: maxime.ripard@free-electrons.com (Maxime Ripard)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 1/2] ARM: topology: Use a clock if possible to get the CPU frequency
Date: Tue, 8 Jul 2014 09:39:40 +0200	[thread overview]
Message-ID: <20140708073940.GH13423@lukather> (raw)
In-Reply-To: <CAKfTPtBPR9QA9h4bF3EkCZufpF+X84N7JzjU88CptR1RtiNrdg@mail.gmail.com>

On Fri, Jul 04, 2014 at 11:22:33AM +0200, Vincent Guittot wrote:
> >>  I still think that using the current rate with clk_get_rate is not a
> >> good solution.
> >
> > Well, it's just as good as using clock-frequency, really. If you want
> > the CPU max frequency, it's not the right property (plus, since the
> > changed behaviour is not documented in Linux anywhere, the only
> > reference we have is the ePAPR on this).
> >
> >> Could you give us more details about why you nee to use current clock ?
> >
> > Honestly, I just want to remove that big warning at boot on the
> > A7-based SoCs we have :)
> 
> so Why not changing the log message ? It's clearly not an error to not
> have clock-frequency

Because the next SoCs we're going to support will be HMP, so we're
only delaying the issue by a few month if we're doing so.

It doesn't fix the underlying issue where you're using a standard
property for a (slightly) different usage.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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  reply	other threads:[~2014-07-08  7:39 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-30 10:12 [PATCH v2 0/2] ARM: topology: Allow to set the frequency through a clock Maxime Ripard
2014-06-30 10:12 ` [PATCH v2 1/2] ARM: topology: Use a clock if possible to get the CPU frequency Maxime Ripard
2014-06-30 10:29   ` Russell King - ARM Linux
2014-06-30 10:39     ` Vincent Guittot
2014-06-30 12:49       ` Maxime Ripard
2014-06-30 13:27         ` Vincent Guittot
2014-06-30 14:01           ` Maxime Ripard
2014-06-30 14:48             ` Vincent Guittot
2014-06-30 14:58               ` Maxime Ripard
2014-06-30 15:06                 ` Vincent Guittot
2014-07-03  7:10                   ` Maxime Ripard
2014-07-03  7:51                     ` Vincent Guittot
2014-07-04  8:02                       ` Maxime Ripard
2014-07-04  9:22                         ` Vincent Guittot
2014-07-08  7:39                           ` Maxime Ripard [this message]
2014-06-30 10:12 ` [PATCH v2 2/2] ARM: sunxi: Add clocks node to the CPU nodes Maxime Ripard

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