cpufreq: dt: change frequency to a specific value when cpufreq exits

Sometimes all cpus of big cluster are closed and its frequency
keep a high value, in order to reduce power and reset normally,
set frequency to a specific value after close all the cpus.

Change-Id: I88bce25812d1b0ff3f78a898cb161642a65cc523
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>

Author: finley1226

drivers/cpufreq/cpufreq-dt.c

@@ -318,6 +318,12 @@ static int cpufreq_exit(struct cpufreq_policy *policy)
 	struct cpumask cpus;
 	struct private_data *priv = policy->driver_data;
 
+#ifdef CONFIG_ARCH_ROCKCHIP
+	cpumask_set_cpu(policy->cpu, policy->cpus);
+	if (cpufreq_generic_suspend(policy))
+		pr_err("%s: Failed to suspend driver: %p\n", __func__, policy);
+	cpumask_clear_cpu(policy->cpu, policy->cpus);
+#endif
 	priv->cpu_dev = get_cpu_device(policy->cpu);
 	cpufreq_cooling_unregister(priv->cdev);
 	dev_pm_opp_free_cpufreq_table(priv->cpu_dev, &policy->freq_table);