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+# SPDX-License-Identifier: GPL-2.0-only
+#
+# ARM CPU Frequency scaling drivers
+#
+
+config ACPI_CPPC_CPUFREQ
+ tristate "CPUFreq driver based on the ACPI CPPC spec"
+ depends on ACPI_PROCESSOR
+ select ACPI_CPPC_LIB
+ help
+ This adds a CPUFreq driver which uses CPPC methods
+ as described in the ACPIv5.1 spec. CPPC stands for
+ Collaborative Processor Performance Controls. It
+ is based on an abstract continuous scale of CPU
+ performance values which allows the remote power
+ processor to flexibly optimize for power and
+ performance. CPPC relies on power management firmware
+ support for its operation.
+
+ If in doubt, say N.
+
+config ACPI_CPPC_CPUFREQ_FIE
+ bool "Frequency Invariance support for CPPC cpufreq driver"
+ depends on ACPI_CPPC_CPUFREQ && GENERIC_ARCH_TOPOLOGY
+ default y
+ help
+ This extends frequency invariance support in the CPPC cpufreq driver,
+ by using CPPC delivered and reference performance counters.
+
+ If in doubt, say N.
+
+config ARM_ALLWINNER_SUN50I_CPUFREQ_NVMEM
+ tristate "Allwinner nvmem based SUN50I CPUFreq driver"
+ depends on ARCH_SUNXI
+ depends on NVMEM_SUNXI_SID
+ select PM_OPP
+ help
+ This adds the nvmem based CPUFreq driver for Allwinner
+ h6 SoC.
+
+ 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
+ help
+ This adds the CPUFreq driver support for Marvell Armada 37xx SoCs.
+ The Armada 37xx PMU supports 4 frequency and VDD levels.
+
+config ARM_ARMADA_8K_CPUFREQ
+ tristate "Armada 8K CPUFreq driver"
+ depends on ARCH_MVEBU && CPUFREQ_DT
+ select ARMADA_AP_CPU_CLK
+ help
+ This enables the CPUFreq driver support for Marvell
+ Armada8k SOCs.
+ Armada8K device has the AP806 which supports scaling
+ to any full integer divider.
+
+ If in doubt, say N.
+
+config ARM_SCPI_CPUFREQ
+ tristate "SCPI based CPUfreq driver"
+ depends on ARM_SCPI_PROTOCOL && COMMON_CLK_SCPI
+ help
+ This adds the CPUfreq driver support for ARM platforms using SCPI
+ protocol for CPU power management.
+
+ This driver uses SCPI Message Protocol driver to interact with the
+ firmware providing the CPU DVFS functionality.
+
+config ARM_VEXPRESS_SPC_CPUFREQ
+ tristate "Versatile Express SPC based CPUfreq driver"
+ depends on ARM_CPU_TOPOLOGY && HAVE_CLK
+ depends on ARCH_VEXPRESS_SPC
+ select PM_OPP
+ help
+ This add the CPUfreq driver support for Versatile Express
+ big.LITTLE platforms using SPC for power management.
+
+config ARM_BRCMSTB_AVS_CPUFREQ
+ tristate "Broadcom STB AVS CPUfreq driver"
+ depends on ARCH_BRCMSTB || COMPILE_TEST
+ default y
+ help
+ Some Broadcom STB SoCs use a co-processor running proprietary firmware
+ ("AVS") to handle voltage and frequency scaling. This driver provides
+ a standard CPUfreq interface to the firmware.
+
+ Say Y, if you have a Broadcom SoC with AVS support for DFS or DVFS.
+
+config ARM_HIGHBANK_CPUFREQ
+ tristate "Calxeda Highbank-based"
+ depends on ARCH_HIGHBANK && CPUFREQ_DT && REGULATOR
+ default m
+ help
+ This adds the CPUFreq driver for Calxeda Highbank SoC
+ based boards.
+
+ If in doubt, say N.
+
+config ARM_IMX6Q_CPUFREQ
+ tristate "Freescale i.MX6 cpufreq support"
+ depends on ARCH_MXC
+ depends on REGULATOR_ANATOP
+ depends on NVMEM_IMX_OCOTP || COMPILE_TEST
+ select PM_OPP
+ help
+ This adds cpufreq driver support for Freescale i.MX6 series SoCs.
+
+ If in doubt, say N.
+
+config ARM_IMX_CPUFREQ_DT
+ tristate "Freescale i.MX8M cpufreq support"
+ depends on ARCH_MXC && CPUFREQ_DT
+ help
+ This adds cpufreq driver support for Freescale i.MX8M series SoCs,
+ based on cpufreq-dt.
+
+ If in doubt, say N.
+
+config ARM_KIRKWOOD_CPUFREQ
+ def_bool MACH_KIRKWOOD
+ help
+ This adds the CPUFreq driver for Marvell Kirkwood
+ SoCs.
+
+config ARM_MEDIATEK_CPUFREQ
+ tristate "CPU Frequency scaling support for MediaTek SoCs"
+ depends on ARCH_MEDIATEK && REGULATOR
+ select PM_OPP
+ help
+ This adds the CPUFreq driver support for MediaTek SoCs.
+
+config ARM_MEDIATEK_CPUFREQ_HW
+ tristate "MediaTek CPUFreq HW driver"
+ depends on ARCH_MEDIATEK || COMPILE_TEST
+ default m
+ help
+ Support for the CPUFreq HW driver.
+ Some MediaTek chipsets have a HW engine to offload the steps
+ necessary for changing the frequency of the CPUs. Firmware loaded
+ in this engine exposes a programming interface to the OS.
+ The driver implements the cpufreq interface for this HW engine.
+ Say Y if you want to support CPUFreq HW.
+
+config ARM_OMAP2PLUS_CPUFREQ
+ bool "TI OMAP2+"
+ depends on ARCH_OMAP2PLUS
+ default ARCH_OMAP2PLUS
+
+config ARM_QCOM_CPUFREQ_NVMEM
+ tristate "Qualcomm nvmem based CPUFreq"
+ depends on ARCH_QCOM
+ depends on NVMEM_QCOM_QFPROM
+ depends on QCOM_SMEM
+ select PM_OPP
+ help
+ This adds the CPUFreq driver for Qualcomm Kryo SoC based boards.
+
+ If in doubt, say N.
+
+config ARM_QCOM_CPUFREQ_HW
+ tristate "QCOM CPUFreq HW driver"
+ depends on ARCH_QCOM || COMPILE_TEST
+ help
+ Support for the CPUFreq HW driver.
+ Some QCOM chipsets have a HW engine to offload the steps
+ necessary for changing the frequency of the CPUs. Firmware loaded
+ in this engine exposes a programming interface to the OS.
+ The driver implements the cpufreq interface for this HW engine.
+ Say Y if you want to support CPUFreq HW.
+
+config ARM_RASPBERRYPI_CPUFREQ
+ tristate "Raspberry Pi cpufreq support"
+ depends on CLK_RASPBERRYPI || COMPILE_TEST
+ help
+ This adds the CPUFreq driver for Raspberry Pi
+
+ If in doubt, say N.
+
+config ARM_S3C64XX_CPUFREQ
+ bool "Samsung S3C64XX"
+ depends on CPU_S3C6410
+ default y
+ help
+ This adds the CPUFreq driver for Samsung S3C6410 SoC.
+
+ If in doubt, say N.
+
+config ARM_S5PV210_CPUFREQ
+ bool "Samsung S5PV210 and S5PC110"
+ depends on CPU_S5PV210
+ default y
+ help
+ This adds the CPUFreq driver for Samsung S5PV210 and
+ S5PC110 SoCs.
+
+ If in doubt, say N.
+
+config ARM_SA1110_CPUFREQ
+ bool
+
+config ARM_SCMI_CPUFREQ
+ tristate "SCMI based CPUfreq driver"
+ depends on ARM_SCMI_PROTOCOL || COMPILE_TEST
+ select PM_OPP
+ help
+ This adds the CPUfreq driver support for ARM platforms using SCMI
+ protocol for CPU power management.
+
+ This driver uses SCMI Message Protocol driver to interact with the
+ firmware providing the CPU DVFS functionality.
+
+config ARM_SPEAR_CPUFREQ
+ bool "SPEAr CPUFreq support"
+ depends on PLAT_SPEAR
+ default y
+ help
+ This adds the CPUFreq driver support for SPEAr SOCs.
+
+config ARM_STI_CPUFREQ
+ tristate "STi CPUFreq support"
+ depends on CPUFREQ_DT && SOC_STIH407
+ help
+ This driver uses the generic OPP framework to match the running
+ platform with a predefined set of suitable values. If not provided
+ we will fall-back so safe-values contained in Device Tree. Enable
+ this config option if you wish to add CPUFreq support for STi based
+ SoCs.
+
+config ARM_TEGRA20_CPUFREQ
+ tristate "Tegra20/30 CPUFreq support"
+ depends on ARCH_TEGRA && CPUFREQ_DT
+ default y
+ help
+ This adds the CPUFreq driver support for Tegra20/30 SOCs.
+
+config ARM_TEGRA124_CPUFREQ
+ bool "Tegra124 CPUFreq support"
+ depends on ARCH_TEGRA && CPUFREQ_DT
+ default y
+ help
+ This adds the CPUFreq driver support for Tegra124 SOCs.
+
+config ARM_TEGRA186_CPUFREQ
+ tristate "Tegra186 CPUFreq support"
+ depends on ARCH_TEGRA && TEGRA_BPMP
+ help
+ This adds the CPUFreq driver support for Tegra186 SOCs.
+
+config ARM_TEGRA194_CPUFREQ
+ tristate "Tegra194 CPUFreq support"
+ depends on ARCH_TEGRA_194_SOC && TEGRA_BPMP
+ default y
+ help
+ This adds CPU frequency driver support for Tegra194 SOCs.
+
+config ARM_TI_CPUFREQ
+ bool "Texas Instruments CPUFreq support"
+ depends on ARCH_OMAP2PLUS || ARCH_K3
+ default y
+ help
+ This driver enables valid OPPs on the running platform based on
+ values contained within the SoC in use. Enable this in order to
+ use the cpufreq-dt driver on all Texas Instruments platforms that
+ provide dt based operating-points-v2 tables with opp-supported-hw
+ data provided. Required for cpufreq support on AM335x, AM437x,
+ DRA7x, and AM57x platforms.
+
+config ARM_PXA2xx_CPUFREQ
+ tristate "Intel PXA2xx CPUfreq driver"
+ depends on PXA27x || PXA25x
+ help
+ This add the CPUFreq driver support for Intel PXA2xx SOCs.
+
+ If in doubt, say N.