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Diffstat (limited to 'target/linux/ipq806x/patches-4.9/0055-cpufreq-dt-Add-L2-frequency-scaling-support.patch')
-rw-r--r--target/linux/ipq806x/patches-4.9/0055-cpufreq-dt-Add-L2-frequency-scaling-support.patch90
1 files changed, 0 insertions, 90 deletions
diff --git a/target/linux/ipq806x/patches-4.9/0055-cpufreq-dt-Add-L2-frequency-scaling-support.patch b/target/linux/ipq806x/patches-4.9/0055-cpufreq-dt-Add-L2-frequency-scaling-support.patch
deleted file mode 100644
index e0ae1f0582..0000000000
--- a/target/linux/ipq806x/patches-4.9/0055-cpufreq-dt-Add-L2-frequency-scaling-support.patch
+++ /dev/null
@@ -1,90 +0,0 @@
-From 0759cdff49f1cf361bf503c13f7bcb33da43ab95 Mon Sep 17 00:00:00 2001
-From: Georgi Djakov <georgi.djakov@linaro.org>
-Date: Tue, 8 Sep 2015 11:24:41 +0300
-Subject: [PATCH 55/69] cpufreq-dt: Add L2 frequency scaling support
-
-Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
----
- drivers/cpufreq/cpufreq-dt.c | 41 ++++++++++++++++++++++++++++++++++++++++-
- include/linux/cpufreq.h | 2 ++
- 2 files changed, 42 insertions(+), 1 deletion(-)
-
---- a/drivers/cpufreq/cpufreq-dt.c
-+++ b/drivers/cpufreq/cpufreq-dt.c
-@@ -48,11 +48,41 @@ static int set_target(struct cpufreq_pol
- struct private_data *priv = policy->driver_data;
- int ret;
- unsigned long target_freq = policy->freq_table[index].frequency * 1000;
-+ struct clk *l2_clk = policy->l2_clk;
-+ unsigned int l2_freq;
-+ unsigned long new_l2_freq = 0;
-
- mutex_lock(&priv->lock);
- ret = dev_pm_opp_set_rate(priv->cpu_dev, target_freq);
-- if (!ret)
-+
-+ if (!ret) {
-+ 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 (target_freq >= policy->l2_rate[2])
-+ new_l2_freq = policy->l2_rate[2];
-+ else if (target_freq >= 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);
-+ }
-+ }
-+
- priv->opp_freq = target_freq;
-+ }
-+
- mutex_unlock(&priv->lock);
-
- return ret;
-@@ -197,6 +227,8 @@ static int cpufreq_init(struct cpufreq_p
- const char *name;
- int ret;
- struct srcu_notifier_head *opp_srcu_head;
-+ struct device_node *l2_np;
-+ struct clk *l2_clk = NULL;
-
- cpu_dev = get_cpu_device(policy->cpu);
- if (!cpu_dev) {
-@@ -321,6 +353,13 @@ static int cpufreq_init(struct cpufreq_p
- policy->suspend_freq = dev_pm_opp_get_freq(suspend_opp) / 1000;
- rcu_read_unlock();
-
-+ l2_clk = clk_get(cpu_dev, "l2");
-+ if (!IS_ERR(l2_clk))
-+ 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) {
- dev_err(cpu_dev, "%s: invalid frequency table: %d\n", __func__,
---- a/include/linux/cpufreq.h
-+++ b/include/linux/cpufreq.h
-@@ -73,6 +73,8 @@ 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 */