cpufreq: dt: Register an Energy Model

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 cpufreq-dt, hence ensuring interested subsystems (the task
scheduler, for example) can make use of that information when available.

Signed-off-by: Quentin Perret <quentin.perret@arm.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c
index e58bfcb1169ebb0acc4d5da303b0754192196130..d74e0402512a80589b0e08a44c04f2f07fe8a4c6 100644 (file)
--- a/drivers/cpufreq/cpufreq-dt.c
+++ b/drivers/cpufreq/cpufreq-dt.c
@@ -280,6 +280,8 @@ static int cpufreq_init(struct cpufreq_policy *policy)
        policy->cpuinfo.transition_latency = transition_latency;
        policy->dvfs_possible_from_any_cpu = true;
 
+       dev_pm_opp_of_register_em(policy->cpus);
+
        return 0;
 
 out_free_cpufreq_table: