[PATCH v4 19/20] cpufreq: add support for CPU DVFS based on SCMI message protocol

Viresh Kumar viresh.kumar at linaro.org
Mon Nov 6 22:15:40 PST 2017


On 03-11-17, 14:47, Sudeep Holla wrote:
> On some ARM based systems, a separate Cortex-M based System Control
> Processor(SCP) provides the overall power, clock, reset and system
> control including CPU DVFS. SCMI Message Protocol is used to
> communicate with the SCP.
> 
> This patch adds a cpufreq driver for such systems using SCMI interface
> to drive CPU DVFS.
> 
> Cc: "Rafael J. Wysocki" <rjw at rjwysocki.net>
> Cc: Viresh Kumar <viresh.kumar at linaro.org>
> Cc: linux-pm at vger.kernel.org
> Signed-off-by: Sudeep Holla <sudeep.holla at arm.com>
> ---
>  MAINTAINERS                    |   2 +-
>  drivers/cpufreq/Kconfig.arm    |  11 ++
>  drivers/cpufreq/Makefile       |   1 +
>  drivers/cpufreq/scmi-cpufreq.c | 274 +++++++++++++++++++++++++++++++++++++++++
>  4 files changed, 287 insertions(+), 1 deletion(-)
>  create mode 100644 drivers/cpufreq/scmi-cpufreq.c

Acked-by: Viresh Kumar <viresh.kumar at linaro.org>

-- 
viresh



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