Orange Pi5 kernel

Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards

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# SPDX-License-Identifier: GPL-2.0-only
menuconfig PM_DEVFREQ
<------>bool "Generic Dynamic Voltage and Frequency Scaling (DVFS) support"
<------>select SRCU
<------>select PM_OPP
<------>help
<------> A device may have a list of frequencies and voltages available.
<------> devfreq, a generic DVFS framework can be registered for a device
<------> in order to let the governor provided to devfreq choose an
<------> operating frequency based on the device driver's policy.
<------> Each device may have its own governor and policy. Devfreq can
<------> reevaluate the device state periodically and/or based on the
<------> notification to "nb", a notifier block, of devfreq.
<------> Like some CPUs with CPUfreq, a device may have multiple clocks.
<------> However, because the clock frequencies of a single device are
<------> determined by the single device's state, an instance of devfreq
<------> is attached to a single device and returns a "representative"
<------> clock frequency of the device, which is also attached
<------> to a device by 1-to-1. The device registering devfreq takes the
<------> responsibility to "interpret" the representative frequency and
<------> to set its every clock accordingly with the "target" callback
<------> given to devfreq.
<------> When OPP is used with the devfreq device, it is recommended to
<------> register devfreq's nb to the OPP's notifier head. If OPP is
<------> used with the devfreq device, you may use OPP helper
<------> functions defined in devfreq.h.
if PM_DEVFREQ
comment "DEVFREQ Governors"
config DEVFREQ_GOV_SIMPLE_ONDEMAND
<------>tristate "Simple Ondemand"
<------>help
<------> Chooses frequency based on the recent load on the device. Works
<------> similar as ONDEMAND governor of CPUFREQ does. A device with
<------> Simple-Ondemand should be able to provide busy/total counter
<------> values that imply the usage rate. A device may provide tuned
<------> values to the governor with data field at devfreq_add_device().
config DEVFREQ_GOV_PERFORMANCE
<------>tristate "Performance"
<------>help
<------> Sets the frequency at the maximum available frequency.
<------> This governor always returns UINT_MAX as frequency so that
<------> the DEVFREQ framework returns the highest frequency available
<------> at any time.
config DEVFREQ_GOV_POWERSAVE
<------>tristate "Powersave"
<------>help
<------> Sets the frequency at the minimum available frequency.
<------> This governor always returns 0 as frequency so that
<------> the DEVFREQ framework returns the lowest frequency available
<------> at any time.
config DEVFREQ_GOV_USERSPACE
<------>tristate "Userspace"
<------>help
<------> Sets the frequency at the user specified one.
<------> This governor returns the user configured frequency if there
<------> has been an input to /sys/devices/.../power/devfreq_set_freq.
<------> Otherwise, the governor does not change the frequency
<------> given at the initialization.
config DEVFREQ_GOV_PASSIVE
<------>tristate "Passive"
<------>help
<------> Sets the frequency based on the frequency of its parent devfreq
<------> device. This governor does not change the frequency by itself
<------> through sysfs entries. The passive governor recommends that
<------> devfreq device uses the OPP table to get the frequency/voltage.
comment "DEVFREQ Drivers"
config ARM_EXYNOS_BUS_DEVFREQ
<------>tristate "ARM Exynos Generic Memory Bus DEVFREQ Driver"
<------>depends on ARCH_EXYNOS || COMPILE_TEST
<------>select DEVFREQ_GOV_SIMPLE_ONDEMAND
<------>select DEVFREQ_GOV_PASSIVE
<------>select DEVFREQ_EVENT_EXYNOS_PPMU
<------>select PM_DEVFREQ_EVENT
<------>help
<------> This adds the common DEVFREQ driver for Exynos Memory bus. Exynos
<------> Memory bus has one more group of memory bus (e.g, MIF and INT block).
<------> Each memory bus group could contain many memoby bus block. It reads
<------> PPMU counters of memory controllers by using DEVFREQ-event device
<------> and adjusts the operating frequencies and voltages with OPP support.
<------> This does not yet operate with optimal voltages.
config ARM_IMX_BUS_DEVFREQ
<------>tristate "i.MX Generic Bus DEVFREQ Driver"
<------>depends on ARCH_MXC || COMPILE_TEST
<------>select DEVFREQ_GOV_USERSPACE
<------>help
<------> This adds the generic DEVFREQ driver for i.MX interconnects. It
<------> allows adjusting NIC/NOC frequency.
config ARM_IMX8M_DDRC_DEVFREQ
<------>tristate "i.MX8M DDRC DEVFREQ Driver"
<------>depends on (ARCH_MXC && HAVE_ARM_SMCCC) || \
<------><------>(COMPILE_TEST && HAVE_ARM_SMCCC)
<------>select DEVFREQ_GOV_SIMPLE_ONDEMAND
<------>select DEVFREQ_GOV_USERSPACE
<------>help
<------> This adds the DEVFREQ driver for the i.MX8M DDR Controller. It allows
<------> adjusting DRAM frequency.
config ARM_TEGRA_DEVFREQ
<------>tristate "NVIDIA Tegra30/114/124/210 DEVFREQ Driver"
<------>depends on ARCH_TEGRA_3x_SOC || ARCH_TEGRA_114_SOC || \
<------><------>ARCH_TEGRA_132_SOC || ARCH_TEGRA_124_SOC || \
<------><------>ARCH_TEGRA_210_SOC || \
<------><------>COMPILE_TEST
<------>depends on COMMON_CLK
<------>help
<------> This adds the DEVFREQ driver for the Tegra family of SoCs.
<------> It reads ACTMON counters of memory controllers and adjusts the
<------> operating frequencies and voltages with OPP support.
config ARM_TEGRA20_DEVFREQ
<------>tristate "NVIDIA Tegra20 DEVFREQ Driver"
<------>depends on (TEGRA_MC && TEGRA20_EMC) || COMPILE_TEST
<------>depends on COMMON_CLK
<------>select DEVFREQ_GOV_SIMPLE_ONDEMAND
<------>help
<------> This adds the DEVFREQ driver for the Tegra20 family of SoCs.
<------> It reads Memory Controller counters and adjusts the operating
<------> frequencies and voltages with OPP support.
config ARM_ROCKCHIP_BUS_DEVFREQ
<------>tristate "ARM ROCKCHIP BUS DEVFREQ Driver"
<------>depends on ARCH_ROCKCHIP
<------>help
<------> This adds the DEVFREQ driver for the ROCKCHIP BUS.
config ARM_ROCKCHIP_DMC_DEVFREQ
<------>tristate "ARM ROCKCHIP DMC DEVFREQ Driver"
<------>depends on (ARCH_ROCKCHIP && HAVE_ARM_SMCCC) || \
<------><------>(COMPILE_TEST && HAVE_ARM_SMCCC)
<------>select DEVFREQ_EVENT_ROCKCHIP_DFI
<------>select PM_DEVFREQ_EVENT
<------>help
<------> This adds the DEVFREQ driver for the ROCKCHIP DMC(Dynamic Memory Controller).
<------> It sets the frequency for the memory controller and reads the usage counts
<------> from hardware.
source "drivers/devfreq/event/Kconfig"
endif # PM_DEVFREQ