exynos-acme: Allow to overclock the CPU

drivers/cpufreq/exynos-acme.c

@@ -1084,6 +1084,40 @@ static int init_dm(struct exynos_cpufreq_domain *domain,
 	return register_exynos_dm_freq_scaler(domain->dm_type, dm_scaler);
 }
 
+static unsigned long arg_cpu_max_c1 = 1586000;
+
+static int __init cpufreq_read_cpu_max_c1(char *cpu_max_c1)
+{
+	unsigned long ui_khz;
+	int ret;
+
+	ret = kstrtoul(cpu_max_c1, 0, &ui_khz);
+	if (ret)
+		return -EINVAL;
+
+	arg_cpu_max_c1 = ui_khz;
+	printk("cpu_max_c1=%lu\n", arg_cpu_max_c1);
+	return ret;
+}
+__setup("cpu_max_c1=", cpufreq_read_cpu_max_c1);
+
+unsigned long arg_cpu_max_c2 = 2184000;
+
+static __init int cpufreq_read_cpu_max_c2(char *cpu_max_c2)
+{
+	unsigned long ui_khz;
+	int ret;
+
+	ret = kstrtoul(cpu_max_c2, 0, &ui_khz);
+	if (ret)
+		return -EINVAL;
+
+	arg_cpu_max_c2 = ui_khz;
+	printk("cpu_max_c2=%lu\n", arg_cpu_max_c2);
+	return ret;
+}
+__setup("cpu_max_c2=", cpufreq_read_cpu_max_c2);
+
 static __init int init_domain(struct exynos_cpufreq_domain *domain,
 					struct device_node *dn)
 {
@@ -1109,6 +1143,12 @@ static __init int init_domain(struct exynos_cpufreq_domain *domain,
 	if (!of_property_read_u32(dn, "min-freq", &val))
 		domain->min_freq = max(domain->min_freq, val);
 
+	if (domain->id == 0) {
+		domain->max_freq = arg_cpu_max_c1;
+	} else if (domain->id == 1) {
+		domain->max_freq = arg_cpu_max_c2;
+	}
+
 	domain->boot_freq = cal_dfs_get_boot_freq(domain->cal_id);
 	domain->resume_freq = cal_dfs_get_resume_freq(domain->cal_id);