1 files changed, 0 insertions, 161 deletions
diff --git a/target/linux/ipq806x/patches-4.4/173-cpufreq-dt-Add-L2-frequency-scaling-support.patch b/target/linux/ipq806x/patches-4.4/173-cpufreq-dt-Add-L2-frequency-scaling-support.patch
deleted file mode 100644
index 56930520c9..0000000000
--- a/target/linux/ipq806x/patches-4.4/173-cpufreq-dt-Add-L2-frequency-scaling-support.patch
+++ /dev/null
@@ -1,161 +0,0 @@
-From b4629f9e30e865402c643de6d4668be790fc0539 Mon Sep 17 00:00:00 2001
-From: Georgi Djakov <georgi.djakov@linaro.org>
-Date: Tue, 8 Sep 2015 11:24:41 +0300
-Subject: cpufreq-dt: Add L2 frequency scaling support
-
-Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
-
-Conflicts:
-	drivers/cpufreq/cpufreq-dt.c
----
- drivers/cpufreq/cpufreq-dt.c | 54 ++++++++++++++++++++++++++++++++++++++------
- include/linux/cpufreq.h      |  2 ++
- 2 files changed, 49 insertions(+), 7 deletions(-)
-
---- a/drivers/cpufreq/cpufreq-dt.c
-+++ b/drivers/cpufreq/cpufreq-dt.c
-@@ -86,11 +86,13 @@ static int set_target(struct cpufreq_pol
- 	struct dev_pm_opp *opp;
- 	struct cpufreq_frequency_table *freq_table = policy->freq_table;
- 	struct clk *cpu_clk = policy->clk;
-+	struct clk *l2_clk = policy->l2_clk;
- 	struct private_data *priv = policy->driver_data;
- 	struct device *cpu_dev = priv->cpu_dev;
- 	struct regulator *cpu_reg = priv->cpu_reg;
- 	unsigned long volt = 0, volt_old = 0, tol = 0;
--	unsigned int old_freq, new_freq;
-+	unsigned int old_freq, new_freq, l2_freq;
-+	unsigned long new_l2_freq = 0;
- 	long freq_Hz, freq_exact;
- 	unsigned long opp_freq = 0;
- 	int ret;
-@@ -146,6 +148,30 @@ static int set_target(struct cpufreq_pol
- 		goto out;
- 	}
- 
-+	if (!IS_ERR(l2_clk) && policy->l2_rate[0] && policy->l2_rate[1] &&
-+	    policy->l2_rate[2]) {
-+		static unsigned long krait_l2[CONFIG_NR_CPUS] = { };
-+		int cpu, ret = 0;
-+
-+		if (freq_exact >= policy->l2_rate[2])
-+			new_l2_freq = policy->l2_rate[2];
-+		else if (freq_exact >= policy->l2_rate[1])
-+			new_l2_freq = policy->l2_rate[1];
-+		else
-+			new_l2_freq = policy->l2_rate[0];
-+
-+		krait_l2[policy->cpu] = new_l2_freq;
-+		for_each_present_cpu(cpu)
-+			new_l2_freq = max(new_l2_freq, krait_l2[cpu]);
-+
-+		l2_freq = clk_get_rate(l2_clk);
-+
-+		if (l2_freq != new_l2_freq) {
-+			/* scale l2 with the core */
-+			ret = clk_set_rate(l2_clk, new_l2_freq);
-+		}
-+	}
-+
- 	/* scaling down?  scale voltage after frequency */
- 	if (!IS_ERR(cpu_reg) && new_freq < old_freq) {
- 		ret = regulator_set_voltage_tol(cpu_reg, volt, tol);
-@@ -156,18 +182,21 @@ static int set_target(struct cpufreq_pol
- 			goto out;
- 		}
- 	}
-+
- 	priv->opp_freq = opp_freq;
-+
- out:
- 	mutex_unlock(&priv->lock);
- 	return ret;
- }
- 
- static int allocate_resources(int cpu, struct device **cdev,
--			      struct regulator **creg, struct clk **cclk)
-+			      struct regulator **creg, struct clk **cclk,
-+			      struct clk **l2)
- {
- 	struct device *cpu_dev;
- 	struct regulator *cpu_reg;
--	struct clk *cpu_clk;
-+	struct clk *cpu_clk, *l2_clk = NULL;
- 	int ret = 0;
- 	char *reg_cpu0 = "cpu0", *reg_cpu = "cpu", *reg;
- 
-@@ -227,6 +256,10 @@ try_again:
- 		*cdev = cpu_dev;
- 		*creg = cpu_reg;
- 		*cclk = cpu_clk;
-+
-+		l2_clk = clk_get(cpu_dev, "l2");
-+		if (!IS_ERR(l2_clk))
-+			*l2 = l2_clk;
- 	}
- 
- 	return ret;
-@@ -236,18 +269,20 @@ static int cpufreq_init(struct cpufreq_p
- {
- 	struct cpufreq_frequency_table *freq_table;
- 	struct device_node *np;
-+	struct device_node *l2_np;
- 	struct private_data *priv;
- 	struct device *cpu_dev;
- 	struct regulator *cpu_reg;
--	struct clk *cpu_clk;
- 	struct dev_pm_opp *suspend_opp;
-+	struct clk *cpu_clk, *l2_clk;
- 	unsigned long min_uV = ~0, max_uV = 0;
- 	unsigned int transition_latency;
- 	bool need_update = false;
- 	int ret;
- 	struct srcu_notifier_head *opp_srcu_head;
- 
--	ret = allocate_resources(policy->cpu, &cpu_dev, &cpu_reg, &cpu_clk);
-+	ret = allocate_resources(policy->cpu, &cpu_dev, &cpu_reg, &cpu_clk,
-+				 &l2_clk);
- 	if (ret) {
- 		pr_err("%s: Failed to allocate resources: %d\n", __func__, ret);
- 		return ret;
-@@ -398,6 +433,11 @@ static int cpufreq_init(struct cpufreq_p
- 	if (suspend_opp)
- 		policy->suspend_freq = dev_pm_opp_get_freq(suspend_opp) / 1000;
- 	rcu_read_unlock();
-+	policy->l2_clk = l2_clk;
-+
-+	l2_np = of_find_node_by_name(NULL, "qcom,l2");
-+	if (l2_np)
-+		of_property_read_u32_array(l2_np, "qcom,l2-rates", policy->l2_rate, 3);
- 
- 	ret = cpufreq_table_validate_and_show(policy, freq_table);
- 	if (ret) {
-@@ -498,7 +538,7 @@ static int dt_cpufreq_probe(struct platf
- {
- 	struct device *cpu_dev;
- 	struct regulator *cpu_reg;
--	struct clk *cpu_clk;
-+	struct clk *cpu_clk, *l2_clk;
- 	int ret;
- 
- 	/*
-@@ -508,7 +548,7 @@ static int dt_cpufreq_probe(struct platf
- 	 *
- 	 * FIXME: Is checking this only for CPU0 sufficient ?
- 	 */
--	ret = allocate_resources(0, &cpu_dev, &cpu_reg, &cpu_clk);
-+	ret = allocate_resources(0, &cpu_dev, &cpu_reg, &cpu_clk, &l2_clk);
- 	if (ret)
- 		return ret;
- 
---- a/include/linux/cpufreq.h
-+++ b/include/linux/cpufreq.h
-@@ -67,6 +67,8 @@ struct cpufreq_policy {
- 	unsigned int		cpu;    /* cpu managing this policy, must be online */
- 
- 	struct clk		*clk;
-+	struct clk		*l2_clk; /* L2 clock */
-+	unsigned int		l2_rate[3]; /* L2 bus clock rate thresholds */
- 	struct cpufreq_cpuinfo	cpuinfo;/* see above */
- 
- 	unsigned int		min;    /* in kHz */