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_MEDIATEK_CPUFREQ_HW
137 tristate "MediaTek CPUFreq HW driver"
138 depends on ARCH_MEDIATEK || COMPILE_TEST
141 Support for the CPUFreq HW driver.
142 Some MediaTek chipsets have a HW engine to offload the steps
143 necessary for changing the frequency of the CPUs. Firmware loaded
144 in this engine exposes a programming interface to the OS.
145 The driver implements the cpufreq interface for this HW engine.
146 Say Y if you want to support CPUFreq HW.
148 config ARM_OMAP2PLUS_CPUFREQ
150 depends on ARCH_OMAP2PLUS
151 default ARCH_OMAP2PLUS
153 config ARM_QCOM_CPUFREQ_NVMEM
154 tristate "Qualcomm nvmem based CPUFreq"
156 depends on QCOM_QFPROM
160 This adds the CPUFreq driver for Qualcomm Kryo SoC based boards.
164 config ARM_QCOM_CPUFREQ_HW
165 tristate "QCOM CPUFreq HW driver"
166 depends on ARCH_QCOM || COMPILE_TEST
168 Support for the CPUFreq HW driver.
169 Some QCOM chipsets have a HW engine to offload the steps
170 necessary for changing the frequency of the CPUs. Firmware loaded
171 in this engine exposes a programming interface to the OS.
172 The driver implements the cpufreq interface for this HW engine.
173 Say Y if you want to support CPUFreq HW.
175 config ARM_RASPBERRYPI_CPUFREQ
176 tristate "Raspberry Pi cpufreq support"
177 depends on CLK_RASPBERRYPI || COMPILE_TEST
179 This adds the CPUFreq driver for Raspberry Pi
183 config ARM_S3C_CPUFREQ
186 Internal configuration node for common cpufreq on Samsung SoC
188 config ARM_S3C24XX_CPUFREQ
189 bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
190 depends on ARCH_S3C24XX
191 select ARM_S3C_CPUFREQ
193 This enables the CPUfreq driver for the Samsung S3C24XX family
196 For details, take a look at <file:Documentation/cpu-freq>.
200 config ARM_S3C24XX_CPUFREQ_DEBUG
201 bool "Debug CPUfreq Samsung driver core"
202 depends on ARM_S3C24XX_CPUFREQ
204 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
206 config ARM_S3C24XX_CPUFREQ_IODEBUG
207 bool "Debug CPUfreq Samsung driver IO timing"
208 depends on ARM_S3C24XX_CPUFREQ
210 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
212 config ARM_S3C24XX_CPUFREQ_DEBUGFS
213 bool "Export debugfs for CPUFreq"
214 depends on ARM_S3C24XX_CPUFREQ && DEBUG_FS
216 Export status information via debugfs.
218 config ARM_S3C2410_CPUFREQ
220 depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2410
222 CPU Frequency scaling support for S3C2410
224 config ARM_S3C2412_CPUFREQ
226 depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2412
228 select S3C2412_IOTIMING
230 CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs.
232 config ARM_S3C2416_CPUFREQ
233 bool "S3C2416 CPU Frequency scaling support"
234 depends on CPU_S3C2416
236 This adds the CPUFreq driver for the Samsung S3C2416 and
237 S3C2450 SoC. The S3C2416 supports changing the rate of the
238 armdiv clock source and also entering a so called dynamic
239 voltage scaling mode in which it is possible to reduce the
240 core voltage of the CPU.
244 config ARM_S3C2416_CPUFREQ_VCORESCALE
245 bool "Allow voltage scaling for S3C2416 arm core"
246 depends on ARM_S3C2416_CPUFREQ && REGULATOR
248 Enable CPU voltage scaling when entering the dvs mode.
249 It uses information gathered through existing hardware and
250 tests but not documented in any datasheet.
254 config ARM_S3C2440_CPUFREQ
255 bool "S3C2440/S3C2442 CPU Frequency scaling support"
256 depends on ARM_S3C24XX_CPUFREQ && (CPU_S3C2440 || CPU_S3C2442)
259 CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs.
261 config ARM_S3C64XX_CPUFREQ
262 bool "Samsung S3C64XX"
263 depends on CPU_S3C6410
266 This adds the CPUFreq driver for Samsung S3C6410 SoC.
270 config ARM_S5PV210_CPUFREQ
271 bool "Samsung S5PV210 and S5PC110"
272 depends on CPU_S5PV210
275 This adds the CPUFreq driver for Samsung S5PV210 and
280 config ARM_SA1100_CPUFREQ
283 config ARM_SA1110_CPUFREQ
286 config ARM_SCMI_CPUFREQ
287 tristate "SCMI based CPUfreq driver"
288 depends on ARM_SCMI_PROTOCOL || COMPILE_TEST
291 This adds the CPUfreq driver support for ARM platforms using SCMI
292 protocol for CPU power management.
294 This driver uses SCMI Message Protocol driver to interact with the
295 firmware providing the CPU DVFS functionality.
297 config ARM_SPEAR_CPUFREQ
298 bool "SPEAr CPUFreq support"
299 depends on PLAT_SPEAR
302 This adds the CPUFreq driver support for SPEAr SOCs.
304 config ARM_STI_CPUFREQ
305 tristate "STi CPUFreq support"
306 depends on CPUFREQ_DT && SOC_STIH407
308 This driver uses the generic OPP framework to match the running
309 platform with a predefined set of suitable values. If not provided
310 we will fall-back so safe-values contained in Device Tree. Enable
311 this config option if you wish to add CPUFreq support for STi based
314 config ARM_TEGRA20_CPUFREQ
315 tristate "Tegra20/30 CPUFreq support"
316 depends on ARCH_TEGRA && CPUFREQ_DT
319 This adds the CPUFreq driver support for Tegra20/30 SOCs.
321 config ARM_TEGRA124_CPUFREQ
322 bool "Tegra124 CPUFreq support"
323 depends on ARCH_TEGRA && CPUFREQ_DT
326 This adds the CPUFreq driver support for Tegra124 SOCs.
328 config ARM_TEGRA186_CPUFREQ
329 tristate "Tegra186 CPUFreq support"
330 depends on ARCH_TEGRA && TEGRA_BPMP
332 This adds the CPUFreq driver support for Tegra186 SOCs.
334 config ARM_TEGRA194_CPUFREQ
335 tristate "Tegra194 CPUFreq support"
336 depends on ARCH_TEGRA_194_SOC && TEGRA_BPMP
339 This adds CPU frequency driver support for Tegra194 SOCs.
341 config ARM_TI_CPUFREQ
342 bool "Texas Instruments CPUFreq support"
343 depends on ARCH_OMAP2PLUS
344 default ARCH_OMAP2PLUS
346 This driver enables valid OPPs on the running platform based on
347 values contained within the SoC in use. Enable this in order to
348 use the cpufreq-dt driver on all Texas Instruments platforms that
349 provide dt based operating-points-v2 tables with opp-supported-hw
350 data provided. Required for cpufreq support on AM335x, AM437x,
351 DRA7x, and AM57x platforms.
353 config ARM_PXA2xx_CPUFREQ
354 tristate "Intel PXA2xx CPUfreq driver"
355 depends on PXA27x || PXA25x
357 This add the CPUFreq driver support for Intel PXA2xx SOCs.