1 files changed, 0 insertions, 118 deletions
diff --git a/target/linux/ipq806x/patches-4.19/0054-cpufreq-dt-Handle-OPP-voltage-adjust-events.patch b/target/linux/ipq806x/patches-4.19/0054-cpufreq-dt-Handle-OPP-voltage-adjust-events.patch
deleted file mode 100644
index 9620891194..0000000000
--- a/target/linux/ipq806x/patches-4.19/0054-cpufreq-dt-Handle-OPP-voltage-adjust-events.patch
+++ /dev/null
@@ -1,118 +0,0 @@
-From 10577f74c35bd395951d1b2382c8d821089b5745 Mon Sep 17 00:00:00 2001
-From: Stephen Boyd <sboyd@codeaurora.org>
-Date: Fri, 18 Sep 2015 17:52:08 -0700
-Subject: [PATCH 54/69] cpufreq-dt: Handle OPP voltage adjust events
-
-On some SoCs the Adaptive Voltage Scaling (AVS) technique is
-employed to optimize the operating voltage of a device. At a
-given frequency, the hardware monitors dynamic factors and either
-makes a suggestion for how much to adjust a voltage for the
-current frequency, or it automatically adjusts the voltage
-without software intervention.
-
-In the former case, an AVS driver will call
-dev_pm_opp_modify_voltage() and update the voltage for the
-particular OPP the CPUs are using. Add an OPP notifier to
-cpufreq-dt so that we can adjust the voltage of the CPU when AVS
-updates the OPP.
-
-Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
-Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
-Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
----
- drivers/cpufreq/cpufreq-dt.c | 68 ++++++++++++++++++++++++++++++++++++++++++--
- 1 file changed, 65 insertions(+), 3 deletions(-)
-
---- a/drivers/cpufreq/cpufreq-dt.c
-+++ b/drivers/cpufreq/cpufreq-dt.c
-@@ -32,6 +32,9 @@ struct private_data {
- 	struct device *cpu_dev;
- 	struct thermal_cooling_device *cdev;
- 	const char *reg_name;
-+	struct notifier_block opp_nb;
-+	struct mutex lock;
-+	unsigned long opp_freq;
- 	bool have_static_opps;
- };
- 
-@@ -47,12 +50,15 @@ static int set_target(struct cpufreq_pol
- 	unsigned long freq = policy->freq_table[index].frequency;
- 	int ret;
- 
-+	mutex_lock(&priv->lock);
- 	ret = dev_pm_opp_set_rate(priv->cpu_dev, freq * 1000);
- 
- 	if (!ret) {
-+		priv->opp_freq = freq * 1000;
- 		arch_set_freq_scale(policy->related_cpus, freq,
- 				    policy->cpuinfo.max_freq);
- 	}
-+	mutex_unlock(&priv->lock);
- 
- 	return ret;
- }
-@@ -95,6 +101,39 @@ node_put:
- 	return name;
- }
- 
-+static int opp_notifier(struct notifier_block *nb, unsigned long event,
-+			void *data)
-+{
-+	struct dev_pm_opp *opp = data;
-+	struct private_data *priv = container_of(nb, struct private_data,
-+						 opp_nb);
-+	struct device *cpu_dev = priv->cpu_dev;
-+	struct regulator *cpu_reg;
-+	unsigned long volt, freq;
-+	int ret = 0;
-+
-+	if (event == OPP_EVENT_ADJUST_VOLTAGE) {
-+		cpu_reg = dev_pm_opp_get_regulator(cpu_dev);
-+		if (IS_ERR(cpu_reg)) {
-+			ret = PTR_ERR(cpu_reg);
-+			goto out;
-+		}
-+		volt = dev_pm_opp_get_voltage(opp);
-+		freq = dev_pm_opp_get_freq(opp);
-+
-+		mutex_lock(&priv->lock);
-+		if (freq == priv->opp_freq) {
-+			ret = regulator_set_voltage_triplet(cpu_reg, volt, volt, volt);
-+		}
-+		mutex_unlock(&priv->lock);
-+		if (ret)
-+			dev_err(cpu_dev, "failed to scale voltage: %d\n", ret);
-+	}
-+
-+out:
-+	return notifier_from_errno(ret);
-+}
-+
- static int resources_available(void)
- {
- 	struct device *cpu_dev;
-@@ -251,10 +290,14 @@ static int cpufreq_init(struct cpufreq_p
- 				__func__, ret);
- 	}
- 
-+	mutex_init(&priv->lock);
-+	priv->opp_nb.notifier_call = opp_notifier;
-+	dev_pm_opp_register_notifier(cpu_dev, &priv->opp_nb);
-+
- 	ret = dev_pm_opp_init_cpufreq_table(cpu_dev, &freq_table);
- 	if (ret) {
- 		dev_err(cpu_dev, "failed to init cpufreq table: %d\n", ret);
--		goto out_free_opp;
-+		goto out_unregister_nb;
- 	}
- 
- 	priv->cpu_dev = cpu_dev;
-@@ -284,6 +327,8 @@ static int cpufreq_init(struct cpufreq_p
- 
- out_free_cpufreq_table:
- 	dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table);
-+out_unregister_nb:
-+	dev_pm_opp_unregister_notifier(cpu_dev, &priv->opp_nb);
- out_free_opp:
- 	if (priv->have_static_opps)
- 		dev_pm_opp_of_cpumask_remove_table(policy->cpus);