Thread (24 messages) 24 messages, 4 authors, 2014-07-24

[PATCHv3 2/7] ARM: mvebu: extend PMSU code to support dynamic frequency scaling

From: Jason Cooper <hidden>
Date: 2014-07-24 11:11:00
Also in: linux-pm

On Thu, Jul 24, 2014 at 08:29:02AM +0200, Thomas Petazzoni wrote:
Dear Mike Turquette,

On Wed, 23 Jul 2014 16:50:26 -0700, Mike Turquette wrote:
quoted
quoted
 * registers the frequency operating points supported by the CPU;

 * registers a clock notifier of the CPU clocks. The notifier function
Where does this code register a clock notifier callback?
quoted
   listens to the newly introduced APPLY_RATE_CHANGE event, and uses
I don't see APPLY_RATE_CHANGE referenced.
Yes, this is a mistake of the commit log, due to remains of the v2 of
the patch series. Back in the v2, there was indeed a new clock notifier
being used. But Stephen Boyd argued against that, and instead suggested
to use a direct function call, which this v3 implements, as stated in
the cover letter:

 - As suggested by Stephen Boyd, instead of using a new clock notifier
   that somewhat "hides" the dependency of the clk-cpu clock driver on
   the PMSU, use a direct call from the clk-cpu driver to the PMSU
   driver.

The commit log of this commit was not adjusted consequently, and this
is my fault. Jason, is it still time to change this commit log?
If there are no code changes, I'd prefer not to.  We're rather late in
the game.

Even though it's not ideal, the commit in question does have a Link: tag
pointing at the patch email on which this conversation is based.  So a
frustrated future developer won't be frustrated long. :)

thx,

Jason.
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