cpufreq-dt: Supply power coefficient when registering cooling devices

Support registering cooling devices with dynamic power coefficient
where provided by the device tree. This allows OF registered cooling
devices driver to be used with the power_allocator thermal governor.

Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Javi Merino <javi.merino@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
(cherry picked from commit f8fa8ae06b8c2c25d81c99766f9226adc5c3e073)
Signed-off-by: Alex Shi <alex.shi@linaro.org>

diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c
index 68232fef54c960bd1a9f75005327729b720af8c6..fc61cab001312c5eac03a245fed3ed0706b2b419 100644 (file)
--- a/drivers/cpufreq/cpufreq-dt.c
+++ b/drivers/cpufreq/cpufreq-dt.c
@@ -406,8 +406,13 @@ static void cpufreq_ready(struct cpufreq_policy *policy)
         * thermal DT code takes care of matching them.
         */
        if (of_find_property(np, "#cooling-cells", NULL)) {
-               priv->cdev = of_cpufreq_cooling_register(np,
-                                                        policy->related_cpus);
+               u32 power_coefficient = 0;
+
+               of_property_read_u32(np, "dynamic-power-coefficient",
+                                    &power_coefficient);
+
+               priv->cdev = of_cpufreq_power_cooling_register(np,
+                               policy->related_cpus, power_coefficient, NULL);
                if (IS_ERR(priv->cdev)) {
                        dev_err(priv->cpu_dev,
                                "running cpufreq without cooling device: %ld\n",