Re: [PATCH 0/3] Add DVFS support on CPU clock for Armada 37xx
From: Stephen Boyd
Date: Thu Dec 21 2017 - 18:13:55 EST
On 11/30, Gregory CLEMENT wrote:
> Hi,
>
> This small series is needed to use DVFS on Armada 37xx. When DVFS is
> enabled the CPU clock setting is done using an other set of registers
> from the North Bridge Power Management block.
>
> The series adds the possibility to modify the CPU frequency using the
> associate load level matching the target frequency. However
> configuring the frequencies for each load is done by the cpufreq
> driver submitted in a separate series.
>
> Obviously having both series (cpufreq and clk) is needed to support
> DVFS on Armada 37xx, but there is no dependencies between the series
> (for building or at runtime).
>
Are you relying on the clk API returning an error to detect if
DVFS is present or not? Just curious why that part of the code
was there.
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