Mike Turquette <mturquette@...> writes:

> 
> Dynamic voltage and frequency scaling (dvfs) is a common power saving
> technique in many of today's modern processors.  This patch introduces a
> common clk rate-change notifier handler which scales voltage
> appropriately whenever clk_set_rate is called on an affected clock.

For DVFS to be useful, we might need to be notified on "clk_enable" 
and "clk_disable" since there are cases that driver will disable or enable 
clock directly but not calling clk_set_rate. Do you agree that notifier in 
common clock need to be improved?
> 
> There are three prerequisites to using this feature:
> 
> 1) the affected clocks must be using the common clk framework
> 2) voltage must be scaled using the regulator framework
> 3) clock frequency and regulator voltage values must be paired via the
> OPP library
> 


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