1 # SPDX-License-Identifier: GPL-2.0-only
3 # ARM CPU Frequency scaling drivers
6 config ACPI_CPPC_CPUFREQ
7 tristate "CPUFreq driver based on the ACPI CPPC spec"
8 depends on ACPI_PROCESSOR
11 This adds a CPUFreq driver which uses CPPC methods
12 as described in the ACPIv5.1 spec. CPPC stands for
13 Collaborative Processor Performance Controls. It
14 is based on an abstract continuous scale of CPU
15 performance values which allows the remote power
16 processor to flexibly optimize for power and
17 performance. CPPC relies on power management firmware
18 support for its operation.
22 config ACPI_CPPC_CPUFREQ_FIE
23 bool "Frequency Invariance support for CPPC cpufreq driver"
24 depends on ACPI_CPPC_CPUFREQ && GENERIC_ARCH_TOPOLOGY
27 This extends frequency invariance support in the CPPC cpufreq driver,
28 by using CPPC delivered and reference performance counters.
32 config ARM_ALLWINNER_SUN50I_CPUFREQ_NVMEM
33 tristate "Allwinner nvmem based SUN50I CPUFreq driver"
35 depends on NVMEM_SUNXI_SID
38 This adds the nvmem based CPUFreq driver for Allwinner
41 To compile this driver as a module, choose M here: the
42 module will be called sun50i-cpufreq-nvmem.
44 config ARM_ARMADA_37XX_CPUFREQ
45 tristate "Armada 37xx CPUFreq support"
46 depends on ARCH_MVEBU && CPUFREQ_DT
48 This adds the CPUFreq driver support for Marvell Armada 37xx SoCs.
49 The Armada 37xx PMU supports 4 frequency and VDD levels.
51 config ARM_ARMADA_8K_CPUFREQ
52 tristate "Armada 8K CPUFreq driver"
53 depends on ARCH_MVEBU && CPUFREQ_DT
54 select ARMADA_AP_CPU_CLK
56 This enables the CPUFreq driver support for Marvell
58 Armada8K device has the AP806 which supports scaling
59 to any full integer divider.
63 config ARM_SCPI_CPUFREQ
64 tristate "SCPI based CPUfreq driver"
65 depends on ARM_SCPI_PROTOCOL && COMMON_CLK_SCPI
67 This adds the CPUfreq driver support for ARM platforms using SCPI
68 protocol for CPU power management.
70 This driver uses SCPI Message Protocol driver to interact with the
71 firmware providing the CPU DVFS functionality.
73 config ARM_VEXPRESS_SPC_CPUFREQ
74 tristate "Versatile Express SPC based CPUfreq driver"
75 depends on ARM_CPU_TOPOLOGY && HAVE_CLK
76 depends on ARCH_VEXPRESS_SPC
79 This add the CPUfreq driver support for Versatile Express
80 big.LITTLE platforms using SPC for power management.
82 config ARM_BRCMSTB_AVS_CPUFREQ
83 tristate "Broadcom STB AVS CPUfreq driver"
84 depends on ARCH_BRCMSTB || COMPILE_TEST
87 Some Broadcom STB SoCs use a co-processor running proprietary firmware
88 ("AVS") to handle voltage and frequency scaling. This driver provides
89 a standard CPUfreq interface to to the firmware.
91 Say Y, if you have a Broadcom SoC with AVS support for DFS or DVFS.
93 config ARM_HIGHBANK_CPUFREQ
94 tristate "Calxeda Highbank-based"
95 depends on ARCH_HIGHBANK && CPUFREQ_DT && REGULATOR
98 This adds the CPUFreq driver for Calxeda Highbank SoC
103 config ARM_IMX6Q_CPUFREQ
104 tristate "Freescale i.MX6 cpufreq support"
106 depends on REGULATOR_ANATOP
107 depends on NVMEM_IMX_OCOTP || COMPILE_TEST
110 This adds cpufreq driver support for Freescale i.MX6 series SoCs.
114 config ARM_IMX_CPUFREQ_DT
115 tristate "Freescale i.MX8M cpufreq support"
116 depends on ARCH_MXC && CPUFREQ_DT
118 This adds cpufreq driver support for Freescale i.MX8M series SoCs,
123 config ARM_KIRKWOOD_CPUFREQ
124 def_bool MACH_KIRKWOOD
126 This adds the CPUFreq driver for Marvell Kirkwood
129 config ARM_MEDIATEK_CPUFREQ
130 tristate "CPU Frequency scaling support for MediaTek SoCs"
131 depends on ARCH_MEDIATEK && REGULATOR
134 This adds the CPUFreq driver support for MediaTek SoCs.
136 config ARM_OMAP2PLUS_CPUFREQ
138 depends on ARCH_OMAP2PLUS
139 default ARCH_OMAP2PLUS
141 config ARM_QCOM_CPUFREQ_NVMEM
142 tristate "Qualcomm nvmem based CPUFreq"
144 depends on QCOM_QFPROM
148 This adds the CPUFreq driver for Qualcomm Kryo SoC based boards.
152 config ARM_QCOM_CPUFREQ_HW
153 tristate "QCOM CPUFreq HW driver"
154 depends on ARCH_QCOM || COMPILE_TEST
156 Support for the CPUFreq HW driver.
157 Some QCOM chipsets have a HW engine to offload the steps
158 necessary for changing the frequency of the CPUs. Firmware loaded
159 in this engine exposes a programming interface to the OS.
160 The driver implements the cpufreq interface for this HW engine.
161 Say Y if you want to support CPUFreq HW.
163 config ARM_RASPBERRYPI_CPUFREQ
164 tristate "Raspberry Pi cpufreq support"
165 depends on CLK_RASPBERRYPI || COMPILE_TEST
167 This adds the CPUFreq driver for Raspberry Pi
171 config ARM_S3C_CPUFREQ
174 Internal configuration node for common cpufreq on Samsung SoC
176 config ARM_S3C24XX_CPUFREQ
177 bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
178 depends on ARCH_S3C24XX
179 select ARM_S3C_CPUFREQ
181 This enables the CPUfreq driver for the Samsung S3C24XX family
184 For details, take a look at <file:Documentation/cpu-freq>.
188 config ARM_S3C24XX_CPUFREQ_DEBUG
189 bool "Debug CPUfreq Samsung driver core"
190 depends on ARM_S3C24XX_CPUFREQ
192 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
194 config ARM_S3C24XX_CPUFREQ_IODEBUG
195 bool "Debug CPUfreq Samsung driver IO timing"
196 depends on ARM_S3C24XX_CPUFREQ
198 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
200 config ARM_S3C24XX_CPUFREQ_DEBUGFS
201 bool "Export debugfs for CPUFreq"
202 depends on ARM_S3C24XX_CPUFREQ && DEBUG_FS
204 Export status information via debugfs.
206 config ARM_S3C2410_CPUFREQ
208 depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2410
210 CPU Frequency scaling support for S3C2410
212 config ARM_S3C2412_CPUFREQ
214 depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2412
216 select S3C2412_IOTIMING
218 CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs.
220 config ARM_S3C2416_CPUFREQ
221 bool "S3C2416 CPU Frequency scaling support"
222 depends on CPU_S3C2416
224 This adds the CPUFreq driver for the Samsung S3C2416 and
225 S3C2450 SoC. The S3C2416 supports changing the rate of the
226 armdiv clock source and also entering a so called dynamic
227 voltage scaling mode in which it is possible to reduce the
228 core voltage of the CPU.
232 config ARM_S3C2416_CPUFREQ_VCORESCALE
233 bool "Allow voltage scaling for S3C2416 arm core"
234 depends on ARM_S3C2416_CPUFREQ && REGULATOR
236 Enable CPU voltage scaling when entering the dvs mode.
237 It uses information gathered through existing hardware and
238 tests but not documented in any datasheet.
242 config ARM_S3C2440_CPUFREQ
243 bool "S3C2440/S3C2442 CPU Frequency scaling support"
244 depends on ARM_S3C24XX_CPUFREQ && (CPU_S3C2440 || CPU_S3C2442)
247 CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs.
249 config ARM_S3C64XX_CPUFREQ
250 bool "Samsung S3C64XX"
251 depends on CPU_S3C6410
254 This adds the CPUFreq driver for Samsung S3C6410 SoC.
258 config ARM_S5PV210_CPUFREQ
259 bool "Samsung S5PV210 and S5PC110"
260 depends on CPU_S5PV210
263 This adds the CPUFreq driver for Samsung S5PV210 and
268 config ARM_SA1100_CPUFREQ
271 config ARM_SA1110_CPUFREQ
274 config ARM_SCMI_CPUFREQ
275 tristate "SCMI based CPUfreq driver"
276 depends on ARM_SCMI_PROTOCOL || COMPILE_TEST
279 This adds the CPUfreq driver support for ARM platforms using SCMI
280 protocol for CPU power management.
282 This driver uses SCMI Message Protocol driver to interact with the
283 firmware providing the CPU DVFS functionality.
285 config ARM_SPEAR_CPUFREQ
286 bool "SPEAr CPUFreq support"
287 depends on PLAT_SPEAR
290 This adds the CPUFreq driver support for SPEAr SOCs.
292 config ARM_STI_CPUFREQ
293 tristate "STi CPUFreq support"
294 depends on CPUFREQ_DT && SOC_STIH407
296 This driver uses the generic OPP framework to match the running
297 platform with a predefined set of suitable values. If not provided
298 we will fall-back so safe-values contained in Device Tree. Enable
299 this config option if you wish to add CPUFreq support for STi based
302 config ARM_TEGRA20_CPUFREQ
303 tristate "Tegra20/30 CPUFreq support"
304 depends on ARCH_TEGRA && CPUFREQ_DT
307 This adds the CPUFreq driver support for Tegra20/30 SOCs.
309 config ARM_TEGRA124_CPUFREQ
310 bool "Tegra124 CPUFreq support"
311 depends on ARCH_TEGRA && CPUFREQ_DT
314 This adds the CPUFreq driver support for Tegra124 SOCs.
316 config ARM_TEGRA186_CPUFREQ
317 tristate "Tegra186 CPUFreq support"
318 depends on ARCH_TEGRA && TEGRA_BPMP
320 This adds the CPUFreq driver support for Tegra186 SOCs.
322 config ARM_TEGRA194_CPUFREQ
323 tristate "Tegra194 CPUFreq support"
324 depends on ARCH_TEGRA_194_SOC && TEGRA_BPMP
327 This adds CPU frequency driver support for Tegra194 SOCs.
329 config ARM_TI_CPUFREQ
330 bool "Texas Instruments CPUFreq support"
331 depends on ARCH_OMAP2PLUS
332 default ARCH_OMAP2PLUS
334 This driver enables valid OPPs on the running platform based on
335 values contained within the SoC in use. Enable this in order to
336 use the cpufreq-dt driver on all Texas Instruments platforms that
337 provide dt based operating-points-v2 tables with opp-supported-hw
338 data provided. Required for cpufreq support on AM335x, AM437x,
339 DRA7x, and AM57x platforms.
341 config ARM_PXA2xx_CPUFREQ
342 tristate "Intel PXA2xx CPUfreq driver"
343 depends on PXA27x || PXA25x
345 This add the CPUFreq driver support for Intel PXA2xx SOCs.