diff options
| author | Hector Martin <marcan@marcan.st> | 2022-11-28 17:29:11 +0300 |
|---|---|---|
| committer | Viresh Kumar <viresh.kumar@linaro.org> | 2022-11-30 08:42:18 +0300 |
| commit | 6286bbb40576ffadfde206c332b61345c19af57f (patch) | |
| tree | 0aa45727bdbb6bb40280b9f812c301d88e679991 /drivers/cpufreq/Kconfig.arm | |
| parent | 4370232c727bf45940345dd1b88dbd8c2e42ec56 (diff) | |
| download | linux-6286bbb40576ffadfde206c332b61345c19af57f.tar.xz | |
cpufreq: apple-soc: Add new driver to control Apple SoC CPU P-states
This driver implements CPU frequency scaling for Apple Silicon SoCs,
including M1 (t8103), M1 Max/Pro/Ultra (t600x), and M2 (t8112).
Each CPU cluster has its own register set, and frequency management is
fully automated by the hardware; the driver only has to write one
register. There is boost frequency support, but the hardware will only
allow their use if only a subset of cores in a cluster are in
non-deep-idle. Since we don't support deep idle yet, these frequencies
are not achievable, but the driver supports them. They will remain
disabled in the device tree until deep idle is implemented, to avoid
confusing users.
This driver does not yet implement the memory controller performance
state tuning that usually accompanies higher CPU p-states. This will be
done in a future patch.
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Hector Martin <marcan@marcan.st>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Diffstat (limited to 'drivers/cpufreq/Kconfig.arm')
| -rw-r--r-- | drivers/cpufreq/Kconfig.arm | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm index be590f498e6a..0a0352d8fa45 100644 --- a/drivers/cpufreq/Kconfig.arm +++ b/drivers/cpufreq/Kconfig.arm @@ -41,6 +41,15 @@ config ARM_ALLWINNER_SUN50I_CPUFREQ_NVMEM To compile this driver as a module, choose M here: the module will be called sun50i-cpufreq-nvmem. +config ARM_APPLE_SOC_CPUFREQ + tristate "Apple Silicon SoC CPUFreq support" + depends on ARCH_APPLE || (COMPILE_TEST && 64BIT) + select PM_OPP + default ARCH_APPLE + help + This adds the CPUFreq driver for Apple Silicon machines + (e.g. Apple M1). + config ARM_ARMADA_37XX_CPUFREQ tristate "Armada 37xx CPUFreq support" depends on ARCH_MVEBU && CPUFREQ_DT |