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Fixes gcc '-Wunused-but-set-variable' warning:
drivers/cpufreq/armada-37xx-cpufreq.c: In function 'armada37xx_cpufreq_avs_setup':
drivers/cpufreq/armada-37xx-cpufreq.c:260:28: warning:
variable 'freq' set but not used [-Wunused-but-set-variable]
It's never used since introduction in commit 1c3528232f ("cpufreq:
armada-37xx: Add AVS support")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
The frequency calculation was based on the current(max) frequency of the
CPU. However for low frequency, the value used was already the parent
frequency divided by a factor of 2.
Instead of using this frequency, this fix directly get the frequency from
the parent clock.
Fixes: 92ce45fb87 ("cpufreq: Add DVFS support for Armada 37xx")
Cc: <stable@vger.kernel.org>
Reported-by: Christian Neubert <christian.neubert.86@gmail.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Armada 37xx supports Adaptive Voltage Scaling and thanks to this patch a
voltage is associated to each load level.
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Add suspend/resume hooks in Armada 37xx DVFS driver to handle S2RAM
operations. As there is currently no 'driver' structure, create one
to store both the regmap and the register values during suspend
operation.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The resources weren't freed on failures, free them properly.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
There was no clk_put() balancing the clk_get(). This commit fixes it.
Fixes: 92ce45fb87 (cpufreq: Add DVFS support for Armada 37xx)
Cc: 4.16+ <stable@vger.kernel.org> # 4.16+
Reported-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This patch adds DVFS support for the Armada 37xx SoCs
There are up to four CPU frequency loads for Armada 37xx controlled by
the hardware.
This driver associates the CPU load level to a frequency, then the
hardware will switch while selecting a load level.
The hardware also can associate a voltage for each level (AVS support)
but it is not yet supported
Tested-by: Andre Heider <a.heider@gmail.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
