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cpufreq: arm_big_little: Register an Energy Model

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Now that PM_OPP provides a helper function to estimate the power
consumed by CPUs, make sure to try and register an Energy Model (EM)
from the arm_big_little CPUFreq driver, hence ensuring interested
subsystems (the task scheduler, for example) can make use of that
information when available.

Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Signed-off-by: Quentin Perret <quentin.perret@arm.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
Dietmar Eggemann 2019-02-04 11:09:51 +00:00 committed by Viresh Kumar
parent 6915d7ad21
commit 2516d67005
1 changed files with 2 additions and 0 deletions
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drivers/cpufreq/arm_big_little.c
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@ -487,6 +487,8 @@ static int bL_cpufreq_init(struct cpufreq_policy *policy)
policy->cpuinfo.transition_latency =
arm_bL_ops->get_transition_latency(cpu_dev);
dev_pm_opp_of_register_em(policy->cpus);
if (is_bL_switching_enabled())
per_cpu(cpu_last_req_freq, policy->cpu) = clk_get_cpu_rate(policy->cpu);