Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 316 insertions, 0 deletions

diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig
new file mode 100644
index 0000000000..f429b9b37b
--- /dev/null
+++ b/drivers/cpufreq/Kconfig
@@ -0,0 +1,316 @@
+# SPDX-License-Identifier: GPL-2.0-only
+menu "CPU Frequency scaling"
+
+config CPU_FREQ
+	bool "CPU Frequency scaling"
+	help
+	  CPU Frequency scaling allows you to change the clock speed of 
+	  CPUs on the fly. This is a nice method to save power, because 
+	  the lower the CPU clock speed, the less power the CPU consumes.
+
+	  Note that this driver doesn't automatically change the CPU
+	  clock speed, you need to either enable a dynamic cpufreq governor
+	  (see below) after boot, or use a userspace tool.
+
+	  For details, take a look at
+	  <file:Documentation/admin-guide/pm/cpufreq.rst>.
+
+	  If in doubt, say N.
+
+if CPU_FREQ
+
+config CPU_FREQ_GOV_ATTR_SET
+	bool
+
+config CPU_FREQ_GOV_COMMON
+	select CPU_FREQ_GOV_ATTR_SET
+	select IRQ_WORK
+	bool
+
+config CPU_FREQ_STAT
+	bool "CPU frequency transition statistics"
+	help
+	  Export CPU frequency statistics information through sysfs.
+
+	  If in doubt, say N.
+
+choice
+	prompt "Default CPUFreq governor"
+	default CPU_FREQ_DEFAULT_GOV_USERSPACE if ARM_SA1110_CPUFREQ
+	default CPU_FREQ_DEFAULT_GOV_SCHEDUTIL if ARM64 || ARM
+	default CPU_FREQ_DEFAULT_GOV_SCHEDUTIL if (X86_INTEL_PSTATE || X86_AMD_PSTATE) && SMP
+	default CPU_FREQ_DEFAULT_GOV_PERFORMANCE
+	help
+	  This option sets which CPUFreq governor shall be loaded at
+	  startup. If in doubt, use the default setting.
+
+config CPU_FREQ_DEFAULT_GOV_PERFORMANCE
+	bool "performance"
+	select CPU_FREQ_GOV_PERFORMANCE
+	help
+	  Use the CPUFreq governor 'performance' as default. This sets
+	  the frequency statically to the highest frequency supported by
+	  the CPU.
+
+config CPU_FREQ_DEFAULT_GOV_POWERSAVE
+	bool "powersave"
+	select CPU_FREQ_GOV_POWERSAVE
+	help
+	  Use the CPUFreq governor 'powersave' as default. This sets
+	  the frequency statically to the lowest frequency supported by
+	  the CPU.
+
+config CPU_FREQ_DEFAULT_GOV_USERSPACE
+	bool "userspace"
+	select CPU_FREQ_GOV_USERSPACE
+	help
+	  Use the CPUFreq governor 'userspace' as default. This allows
+	  you to set the CPU frequency manually or when a userspace 
+	  program shall be able to set the CPU dynamically without having
+	  to enable the userspace governor manually.
+
+config CPU_FREQ_DEFAULT_GOV_ONDEMAND
+	bool "ondemand"
+	depends on !(X86_INTEL_PSTATE && SMP)
+	select CPU_FREQ_GOV_ONDEMAND
+	select CPU_FREQ_GOV_PERFORMANCE
+	help
+	  Use the CPUFreq governor 'ondemand' as default. This allows
+	  you to get a full dynamic frequency capable system by simply
+	  loading your cpufreq low-level hardware driver.
+	  Be aware that not all cpufreq drivers support the ondemand
+	  governor. If unsure have a look at the help section of the
+	  driver. Fallback governor will be the performance governor.
+
+config CPU_FREQ_DEFAULT_GOV_CONSERVATIVE
+	bool "conservative"
+	depends on !(X86_INTEL_PSTATE && SMP)
+	select CPU_FREQ_GOV_CONSERVATIVE
+	select CPU_FREQ_GOV_PERFORMANCE
+	help
+	  Use the CPUFreq governor 'conservative' as default. This allows
+	  you to get a full dynamic frequency capable system by simply
+	  loading your cpufreq low-level hardware driver.
+	  Be aware that not all cpufreq drivers support the conservative
+	  governor. If unsure have a look at the help section of the
+	  driver. Fallback governor will be the performance governor.
+
+config CPU_FREQ_DEFAULT_GOV_SCHEDUTIL
+	bool "schedutil"
+	depends on SMP
+	select CPU_FREQ_GOV_SCHEDUTIL
+	select CPU_FREQ_GOV_PERFORMANCE
+	help
+	  Use the 'schedutil' CPUFreq governor by default. If unsure,
+	  have a look at the help section of that governor. The fallback
+	  governor will be 'performance'.
+
+endchoice
+
+config CPU_FREQ_GOV_PERFORMANCE
+	tristate "'performance' governor"
+	help
+	  This cpufreq governor sets the frequency statically to the
+	  highest available CPU frequency.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called cpufreq_performance.
+
+	  If in doubt, say Y.
+
+config CPU_FREQ_GOV_POWERSAVE
+	tristate "'powersave' governor"
+	help
+	  This cpufreq governor sets the frequency statically to the
+	  lowest available CPU frequency.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called cpufreq_powersave.
+
+	  If in doubt, say Y.
+
+config CPU_FREQ_GOV_USERSPACE
+	tristate "'userspace' governor for userspace frequency scaling"
+	help
+	  Enable this cpufreq governor when you either want to set the
+	  CPU frequency manually or when a userspace program shall
+	  be able to set the CPU dynamically, like on LART 
+	  <http://www.lartmaker.nl/>.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called cpufreq_userspace.
+
+	  If in doubt, say Y.
+
+config CPU_FREQ_GOV_ONDEMAND
+	tristate "'ondemand' cpufreq policy governor"
+	select CPU_FREQ_GOV_COMMON
+	help
+	  'ondemand' - This driver adds a dynamic cpufreq policy governor.
+	  The governor does a periodic polling and 
+	  changes frequency based on the CPU utilization.
+	  The support for this governor depends on CPU capability to
+	  do fast frequency switching (i.e, very low latency frequency
+	  transitions). 
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called cpufreq_ondemand.
+
+	  For details, take a look at
+	  <file:Documentation/admin-guide/pm/cpufreq.rst>.
+
+	  If in doubt, say N.
+
+config CPU_FREQ_GOV_CONSERVATIVE
+	tristate "'conservative' cpufreq governor"
+	depends on CPU_FREQ
+	select CPU_FREQ_GOV_COMMON
+	help
+	  'conservative' - this driver is rather similar to the 'ondemand'
+	  governor both in its source code and its purpose, the difference is
+	  its optimisation for better suitability in a battery powered
+	  environment.  The frequency is gracefully increased and decreased
+	  rather than jumping to 100% when speed is required.
+
+	  If you have a desktop machine then you should really be considering
+	  the 'ondemand' governor instead, however if you are using a laptop,
+	  PDA or even an AMD64 based computer (due to the unacceptable
+	  step-by-step latency issues between the minimum and maximum frequency
+	  transitions in the CPU) you will probably want to use this governor.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called cpufreq_conservative.
+
+	  For details, take a look at
+	  <file:Documentation/admin-guide/pm/cpufreq.rst>.
+
+	  If in doubt, say N.
+
+config CPU_FREQ_GOV_SCHEDUTIL
+	bool "'schedutil' cpufreq policy governor"
+	depends on CPU_FREQ && SMP
+	select CPU_FREQ_GOV_ATTR_SET
+	select IRQ_WORK
+	help
+	  This governor makes decisions based on the utilization data provided
+	  by the scheduler.  It sets the CPU frequency to be proportional to
+	  the utilization/capacity ratio coming from the scheduler.  If the
+	  utilization is frequency-invariant, the new frequency is also
+	  proportional to the maximum available frequency.  If that is not the
+	  case, it is proportional to the current frequency of the CPU.  The
+	  frequency tipping point is at utilization/capacity equal to 80% in
+	  both cases.
+
+	  If in doubt, say N.
+
+comment "CPU frequency scaling drivers"
+
+config CPUFREQ_DT
+	tristate "Generic DT based cpufreq driver"
+	depends on HAVE_CLK && OF
+	select CPUFREQ_DT_PLATDEV
+	select PM_OPP
+	help
+	  This adds a generic DT based cpufreq driver for frequency management.
+	  It supports both uniprocessor (UP) and symmetric multiprocessor (SMP)
+	  systems.
+
+	  If in doubt, say N.
+
+config CPUFREQ_DT_PLATDEV
+	tristate "Generic DT based cpufreq platdev driver"
+	depends on OF
+	help
+	  This adds a generic DT based cpufreq platdev driver for frequency
+	  management.  This creates a 'cpufreq-dt' platform device, on the
+	  supported platforms.
+
+	  If in doubt, say N.
+
+if X86
+source "drivers/cpufreq/Kconfig.x86"
+endif
+
+if ARM || ARM64
+source "drivers/cpufreq/Kconfig.arm"
+endif
+
+if PPC32 || PPC64
+source "drivers/cpufreq/Kconfig.powerpc"
+endif
+
+if IA64
+config IA64_ACPI_CPUFREQ
+	tristate "ACPI Processor P-States driver"
+	depends on ACPI_PROCESSOR
+	help
+	This driver adds a CPUFreq driver which utilizes the ACPI
+	Processor Performance States.
+
+	If in doubt, say N.
+endif
+
+if MIPS
+config BMIPS_CPUFREQ
+	tristate "BMIPS CPUfreq Driver"
+	help
+	  This option adds a CPUfreq driver for BMIPS processors with
+	  support for configurable CPU frequency.
+
+	  For now, BMIPS5 chips are supported (such as the Broadcom 7425).
+
+	  If in doubt, say N.
+
+config LOONGSON2_CPUFREQ
+	tristate "Loongson2 CPUFreq Driver"
+	depends on LEMOTE_MACH2F
+	help
+	  This option adds a CPUFreq driver for loongson processors which
+	  support software configurable cpu frequency.
+
+	  Loongson2F and its successors support this feature.
+
+	  If in doubt, say N.
+endif
+
+if SPARC64
+config SPARC_US3_CPUFREQ
+	tristate "UltraSPARC-III CPU Frequency driver"
+	help
+	  This adds the CPUFreq driver for UltraSPARC-III processors.
+
+	  If in doubt, say N.
+
+config SPARC_US2E_CPUFREQ
+	tristate "UltraSPARC-IIe CPU Frequency driver"
+	help
+	  This adds the CPUFreq driver for UltraSPARC-IIe processors.
+
+	  If in doubt, say N.
+endif
+
+if SUPERH
+config SH_CPU_FREQ
+	tristate "SuperH CPU Frequency driver"
+	help
+	  This adds the cpufreq driver for SuperH. Any CPU that supports
+	  clock rate rounding through the clock framework can use this
+	  driver. While it will make the kernel slightly larger, this is
+	  harmless for CPUs that don't support rate rounding. The driver
+	  will also generate a notice in the boot log before disabling
+	  itself if the CPU in question is not capable of rate rounding.
+
+	  If unsure, say N.
+endif
+
+config QORIQ_CPUFREQ
+	tristate "CPU frequency scaling driver for Freescale QorIQ SoCs"
+	depends on OF && COMMON_CLK
+	depends on PPC_E500MC || SOC_LS1021A || ARCH_LAYERSCAPE || COMPILE_TEST
+	select CLK_QORIQ
+	help
+	  This adds the CPUFreq driver support for Freescale QorIQ SoCs
+	  which are capable of changing the CPU's frequency dynamically.
+
+endif
+endmenu