cpufreq: arm_big_little: add SCPI interface driver

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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. SCPI Message Protocol is used to
communicate with the SCPI.

This patch adds a interface driver for adding OPPs and registering
the arm_big_little cpufreq driver for such systems.

Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: linux-pm@vger.kernel.org

...

This commit is contained in:

Sudeep Holla 2015-03-30 10:59:52 +01:00

parent 9490f01e24

commit 8def31034d

4 changed files with 136 additions and 0 deletions

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10

drivers/cpufreq/Kconfig.arm

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1

drivers/cpufreq/Makefile

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124

drivers/cpufreq/scpi-cpufreq.c

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