Commit Graph

4 Commits

Author SHA1 Message Date
Christoph Hellwig
a3ade38d5a cpufreq: tegra186: don't pass GFP_DMA32 to dma_alloc_coherent()
The DMA API does its own zone decisions based on the coherent_dma_mask.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-10-17 09:25:38 +02:00
Viresh Kumar
a8b6966034 cpufreq: tegra186: Don't validate the frequency table twice
The cpufreq core is already validating the CPU frequency table after
calling the ->init() callback of the cpufreq drivers and the drivers
don't need to do the same anymore. Though they need to set the
policy->freq_table field directly from the ->init() callback now.

Stop validating the frequency table from tegra186 driver.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-03-20 12:07:53 +01:00
Viresh Kumar
3e3b507ef6 cpufreq: tegra186: Break after initialization is done for policy->cpu
There are two clusters (2 + 4 CPUs) on this platform and a separate
cpufreq policy is available for each of the CPUs. The loop in
tegra186_cpufreq_init() tries to find the structure for the right CPU
and finish initialization. But it is missing a `break` statement at the
end, which forces it to restart the loop even when the CPU already
matched and initialization is done.

Fix that by adding the missing `break` statement.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-02-27 18:22:12 +01:00
Mikko Perttunen
939dc6f51e cpufreq: Add Tegra186 cpufreq driver
Add a new cpufreq driver for Tegra186 (and likely later).
The CPUs are organized into two clusters, Denver and A57,
with two and four cores respectively. CPU frequency can be
adjusted by writing the desired rate divisor and a voltage
hint to a special per-core register.

The frequency of each core can be set individually; however,
this is just a hint as all CPUs in a cluster will run at
the maximum rate of non-idle CPUs in the cluster.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-04-19 23:23:08 +02:00