From: robherring2@gmail.com (Rob Herring)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/2] ARM: iMX5 BBG: add cpuidle driver parameters
Date: Tue, 08 Feb 2011 11:50:27 -0600 [thread overview]
Message-ID: <4D518263.2070503@gmail.com> (raw)
In-Reply-To: <AANLkTiko-OjXp2SER0=fh0acSXwYDEav=kQE94UB4zY9@mail.gmail.com>
On 02/08/2011 09:51 AM, Yong Shen wrote:
> Hi Arnaud,
>
> I also took a while to think about this before posting patches. I prefer
> to put it in board related code since the various PMIC used on each
> boards may have influence on cpuidle latency or other charactors,
> although it could be minor.
>
But you are not going to be doing voltage scaling in idle. Is it even
possible to do sleeping operations like accessing a PMIC in idle?
The core is powergated, so lowering voltage would not help. Doing bus
scaling or DDR self-refresh are the only likely additional operations.
Rob
next prev parent reply other threads:[~2011-02-08 17:50 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-08 15:14 [PATCH 0/2] cpuidle driver on iMX platform yong.shen at linaro.org
2011-02-08 15:14 ` [PATCH 1/2] ARM: iMX: cpuidle driver yong.shen at linaro.org
2011-02-08 15:14 ` [PATCH 2/2] ARM: iMX5 BBG: add cpuidle driver parameters yong.shen at linaro.org
2011-02-08 15:29 ` Arnaud Patard (Rtp)
2011-02-08 15:51 ` Yong Shen
2011-02-08 17:16 ` Amit Kucheria
2011-02-08 17:24 ` Arnaud Patard (Rtp)
2011-02-08 17:40 ` Amit Kucheria
2011-02-08 17:50 ` Rob Herring [this message]
2011-02-09 9:40 ` Yong Shen
2011-02-09 10:52 ` Vishwanath Sripathy
2011-02-09 11:19 ` Yong Shen
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