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 ARM_ALLWINNER_SUN50I_CPUFREQ_NVMEM
23 tristate "Allwinner nvmem based SUN50I CPUFreq driver"
25 depends on NVMEM_SUNXI_SID
28 This adds the nvmem based CPUFreq driver for Allwinner
31 To compile this driver as a module, choose M here: the
32 module will be called sun50i-cpufreq-nvmem.
34 config ARM_ARMADA_37XX_CPUFREQ
35 tristate "Armada 37xx CPUFreq support"
36 depends on ARCH_MVEBU && CPUFREQ_DT
38 This adds the CPUFreq driver support for Marvell Armada 37xx SoCs.
39 The Armada 37xx PMU supports 4 frequency and VDD levels.
41 config ARM_ARMADA_8K_CPUFREQ
42 tristate "Armada 8K CPUFreq driver"
43 depends on ARCH_MVEBU && CPUFREQ_DT
45 This enables the CPUFreq driver support for Marvell
47 Armada8K device has the AP806 which supports scaling
48 to any full integer divider.
52 config ARM_SCPI_CPUFREQ
53 tristate "SCPI based CPUfreq driver"
54 depends on ARM_SCPI_PROTOCOL && COMMON_CLK_SCPI
56 This adds the CPUfreq driver support for ARM platforms using SCPI
57 protocol for CPU power management.
59 This driver uses SCPI Message Protocol driver to interact with the
60 firmware providing the CPU DVFS functionality.
62 config ARM_VEXPRESS_SPC_CPUFREQ
63 tristate "Versatile Express SPC based CPUfreq driver"
64 depends on ARM_CPU_TOPOLOGY && HAVE_CLK
65 depends on ARCH_VEXPRESS_SPC
68 This add the CPUfreq driver support for Versatile Express
69 big.LITTLE platforms using SPC for power management.
71 config ARM_BRCMSTB_AVS_CPUFREQ
72 tristate "Broadcom STB AVS CPUfreq driver"
73 depends on ARCH_BRCMSTB || COMPILE_TEST
76 Some Broadcom STB SoCs use a co-processor running proprietary firmware
77 ("AVS") to handle voltage and frequency scaling. This driver provides
78 a standard CPUfreq interface to to the firmware.
80 Say Y, if you have a Broadcom SoC with AVS support for DFS or DVFS.
82 config ARM_HIGHBANK_CPUFREQ
83 tristate "Calxeda Highbank-based"
84 depends on ARCH_HIGHBANK && CPUFREQ_DT && REGULATOR
87 This adds the CPUFreq driver for Calxeda Highbank SoC
92 config ARM_IMX6Q_CPUFREQ
93 tristate "Freescale i.MX6 cpufreq support"
95 depends on REGULATOR_ANATOP
98 This adds cpufreq driver support for Freescale i.MX6 series SoCs.
102 config ARM_IMX_CPUFREQ_DT
103 tristate "Freescale i.MX8M cpufreq support"
104 depends on ARCH_MXC && CPUFREQ_DT
106 This adds cpufreq driver support for Freescale i.MX8M series SoCs,
111 config ARM_KIRKWOOD_CPUFREQ
112 def_bool MACH_KIRKWOOD
114 This adds the CPUFreq driver for Marvell Kirkwood
117 config ARM_MEDIATEK_CPUFREQ
118 tristate "CPU Frequency scaling support for MediaTek SoCs"
119 depends on ARCH_MEDIATEK && REGULATOR
122 This adds the CPUFreq driver support for MediaTek SoCs.
124 config ARM_OMAP2PLUS_CPUFREQ
126 depends on ARCH_OMAP2PLUS
127 default ARCH_OMAP2PLUS
129 config ARM_QCOM_CPUFREQ_NVMEM
130 tristate "Qualcomm nvmem based CPUFreq"
132 depends on QCOM_QFPROM
136 This adds the CPUFreq driver for Qualcomm Kryo SoC based boards.
140 config ARM_QCOM_CPUFREQ_HW
141 tristate "QCOM CPUFreq HW driver"
142 depends on ARCH_QCOM || COMPILE_TEST
144 Support for the CPUFreq HW driver.
145 Some QCOM chipsets have a HW engine to offload the steps
146 necessary for changing the frequency of the CPUs. Firmware loaded
147 in this engine exposes a programming interface to the OS.
148 The driver implements the cpufreq interface for this HW engine.
149 Say Y if you want to support CPUFreq HW.
151 config ARM_RASPBERRYPI_CPUFREQ
152 tristate "Raspberry Pi cpufreq support"
153 depends on CLK_RASPBERRYPI || COMPILE_TEST
155 This adds the CPUFreq driver for Raspberry Pi
159 config ARM_S3C_CPUFREQ
162 Internal configuration node for common cpufreq on Samsung SoC
164 config ARM_S3C24XX_CPUFREQ
165 bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
166 depends on ARCH_S3C24XX
167 select ARM_S3C_CPUFREQ
169 This enables the CPUfreq driver for the Samsung S3C24XX family
172 For details, take a look at <file:Documentation/cpu-freq>.
176 config ARM_S3C24XX_CPUFREQ_DEBUG
177 bool "Debug CPUfreq Samsung driver core"
178 depends on ARM_S3C24XX_CPUFREQ
180 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
182 config ARM_S3C24XX_CPUFREQ_IODEBUG
183 bool "Debug CPUfreq Samsung driver IO timing"
184 depends on ARM_S3C24XX_CPUFREQ
186 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
188 config ARM_S3C24XX_CPUFREQ_DEBUGFS
189 bool "Export debugfs for CPUFreq"
190 depends on ARM_S3C24XX_CPUFREQ && DEBUG_FS
192 Export status information via debugfs.
194 config ARM_S3C2410_CPUFREQ
196 depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2410
197 select S3C2410_CPUFREQ_UTILS
199 CPU Frequency scaling support for S3C2410
201 config ARM_S3C2412_CPUFREQ
203 depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2412
205 select S3C2412_IOTIMING
207 CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs.
209 config ARM_S3C2416_CPUFREQ
210 bool "S3C2416 CPU Frequency scaling support"
211 depends on CPU_S3C2416
213 This adds the CPUFreq driver for the Samsung S3C2416 and
214 S3C2450 SoC. The S3C2416 supports changing the rate of the
215 armdiv clock source and also entering a so called dynamic
216 voltage scaling mode in which it is possible to reduce the
217 core voltage of the CPU.
221 config ARM_S3C2416_CPUFREQ_VCORESCALE
222 bool "Allow voltage scaling for S3C2416 arm core"
223 depends on ARM_S3C2416_CPUFREQ && REGULATOR
225 Enable CPU voltage scaling when entering the dvs mode.
226 It uses information gathered through existing hardware and
227 tests but not documented in any datasheet.
231 config ARM_S3C2440_CPUFREQ
232 bool "S3C2440/S3C2442 CPU Frequency scaling support"
233 depends on ARM_S3C24XX_CPUFREQ && (CPU_S3C2440 || CPU_S3C2442)
234 select S3C2410_CPUFREQ_UTILS
237 CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs.
239 config ARM_S3C64XX_CPUFREQ
240 bool "Samsung S3C64XX"
241 depends on CPU_S3C6410
244 This adds the CPUFreq driver for Samsung S3C6410 SoC.
248 config ARM_S5PV210_CPUFREQ
249 bool "Samsung S5PV210 and S5PC110"
250 depends on CPU_S5PV210
253 This adds the CPUFreq driver for Samsung S5PV210 and
258 config ARM_SA1100_CPUFREQ
261 config ARM_SA1110_CPUFREQ
264 config ARM_SCMI_CPUFREQ
265 tristate "SCMI based CPUfreq driver"
266 depends on ARM_SCMI_PROTOCOL || COMPILE_TEST
269 This adds the CPUfreq driver support for ARM platforms using SCMI
270 protocol for CPU power management.
272 This driver uses SCMI Message Protocol driver to interact with the
273 firmware providing the CPU DVFS functionality.
275 config ARM_SPEAR_CPUFREQ
276 bool "SPEAr CPUFreq support"
277 depends on PLAT_SPEAR
280 This adds the CPUFreq driver support for SPEAr SOCs.
282 config ARM_STI_CPUFREQ
283 tristate "STi CPUFreq support"
284 depends on SOC_STIH407
286 This driver uses the generic OPP framework to match the running
287 platform with a predefined set of suitable values. If not provided
288 we will fall-back so safe-values contained in Device Tree. Enable
289 this config option if you wish to add CPUFreq support for STi based
292 config ARM_TANGO_CPUFREQ
294 depends on CPUFREQ_DT && ARCH_TANGO
297 config ARM_TEGRA20_CPUFREQ
298 tristate "Tegra20 CPUFreq support"
299 depends on ARCH_TEGRA
302 This adds the CPUFreq driver support for Tegra20 SOCs.
304 config ARM_TEGRA124_CPUFREQ
305 bool "Tegra124 CPUFreq support"
306 depends on ARCH_TEGRA && CPUFREQ_DT
309 This adds the CPUFreq driver support for Tegra124 SOCs.
311 config ARM_TEGRA186_CPUFREQ
312 tristate "Tegra186 CPUFreq support"
313 depends on ARCH_TEGRA && TEGRA_BPMP
315 This adds the CPUFreq driver support for Tegra186 SOCs.
317 config ARM_TI_CPUFREQ
318 bool "Texas Instruments CPUFreq support"
319 depends on ARCH_OMAP2PLUS
321 This driver enables valid OPPs on the running platform based on
322 values contained within the SoC in use. Enable this in order to
323 use the cpufreq-dt driver on all Texas Instruments platforms that
324 provide dt based operating-points-v2 tables with opp-supported-hw
325 data provided. Required for cpufreq support on AM335x, AM437x,
326 DRA7x, and AM57x platforms.
328 config ARM_PXA2xx_CPUFREQ
329 tristate "Intel PXA2xx CPUfreq driver"
330 depends on PXA27x || PXA25x
332 This add the CPUFreq driver support for Intel PXA2xx SOCs.