[v4,4/5] cpufreq: arm_big_little: Register an Energy Model
diff mbox series

Message ID 20190204110952.16025-5-quentin.perret@arm.com
State New
Delegated to: viresh kumar
Headers show
  • Register an Energy Model for Arm reference platforms
Related show

Commit Message

Quentin Perret Feb. 4, 2019, 11:09 a.m. UTC
From: Dietmar Eggemann <dietmar.eggemann@arm.com>

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>
 drivers/cpufreq/arm_big_little.c | 2 ++
 1 file changed, 2 insertions(+)

diff mbox series

diff --git a/drivers/cpufreq/arm_big_little.c b/drivers/cpufreq/arm_big_little.c
index cf62a1f64dd7..7fe52fcddcf1 100644
--- a/drivers/cpufreq/arm_big_little.c
+++ b/drivers/cpufreq/arm_big_little.c
@@ -487,6 +487,8 @@  static int bL_cpufreq_init(struct cpufreq_policy *policy)
 	policy->cpuinfo.transition_latency =
+	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);