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 # big LITTLE core layer and glue drivers
53 config ARM_BIG_LITTLE_CPUFREQ
54 tristate "Generic ARM big LITTLE CPUfreq driver"
55 depends on ARM_CPU_TOPOLOGY && HAVE_CLK
58 This enables the Generic CPUfreq driver for ARM big.LITTLE platforms.
60 config ARM_SCPI_CPUFREQ
61 tristate "SCPI based CPUfreq driver"
62 depends on ARM_SCPI_PROTOCOL && COMMON_CLK_SCPI
64 This adds the CPUfreq driver support for ARM platforms using SCPI
65 protocol for CPU power management.
67 This driver uses SCPI Message Protocol driver to interact with the
68 firmware providing the CPU DVFS functionality.
70 config ARM_VEXPRESS_SPC_CPUFREQ
71 tristate "Versatile Express SPC based CPUfreq driver"
72 depends on ARM_BIG_LITTLE_CPUFREQ && ARCH_VEXPRESS_SPC
74 This add the CPUfreq driver support for Versatile Express
75 big.LITTLE platforms using SPC for power management.
77 config ARM_BRCMSTB_AVS_CPUFREQ
78 tristate "Broadcom STB AVS CPUfreq driver"
79 depends on ARCH_BRCMSTB || COMPILE_TEST
82 Some Broadcom STB SoCs use a co-processor running proprietary firmware
83 ("AVS") to handle voltage and frequency scaling. This driver provides
84 a standard CPUfreq interface to to the firmware.
86 Say Y, if you have a Broadcom SoC with AVS support for DFS or DVFS.
88 config ARM_HIGHBANK_CPUFREQ
89 tristate "Calxeda Highbank-based"
90 depends on ARCH_HIGHBANK && CPUFREQ_DT && REGULATOR
93 This adds the CPUFreq driver for Calxeda Highbank SoC
98 config ARM_IMX6Q_CPUFREQ
99 tristate "Freescale i.MX6 cpufreq support"
101 depends on REGULATOR_ANATOP
104 This adds cpufreq driver support for Freescale i.MX6 series SoCs.
108 config ARM_IMX_CPUFREQ_DT
109 tristate "Freescale i.MX8M cpufreq support"
110 depends on ARCH_MXC && CPUFREQ_DT
112 This adds cpufreq driver support for Freescale i.MX8M series SoCs,
117 config ARM_KIRKWOOD_CPUFREQ
118 def_bool MACH_KIRKWOOD
120 This adds the CPUFreq driver for Marvell Kirkwood
123 config ARM_MEDIATEK_CPUFREQ
124 tristate "CPU Frequency scaling support for MediaTek SoCs"
125 depends on ARCH_MEDIATEK && REGULATOR
128 This adds the CPUFreq driver support for MediaTek SoCs.
130 config ARM_OMAP2PLUS_CPUFREQ
132 depends on ARCH_OMAP2PLUS
133 default ARCH_OMAP2PLUS
135 config ARM_QCOM_CPUFREQ_NVMEM
136 tristate "Qualcomm nvmem based CPUFreq"
138 depends on QCOM_QFPROM
142 This adds the CPUFreq driver for Qualcomm Kryo SoC based boards.
146 config ARM_QCOM_CPUFREQ_HW
147 tristate "QCOM CPUFreq HW driver"
148 depends on ARCH_QCOM || COMPILE_TEST
150 Support for the CPUFreq HW driver.
151 Some QCOM chipsets have a HW engine to offload the steps
152 necessary for changing the frequency of the CPUs. Firmware loaded
153 in this engine exposes a programming interface to the OS.
154 The driver implements the cpufreq interface for this HW engine.
155 Say Y if you want to support CPUFreq HW.
157 config ARM_RASPBERRYPI_CPUFREQ
158 tristate "Raspberry Pi cpufreq support"
159 depends on CLK_RASPBERRYPI || COMPILE_TEST
161 This adds the CPUFreq driver for Raspberry Pi
165 config ARM_S3C_CPUFREQ
168 Internal configuration node for common cpufreq on Samsung SoC
170 config ARM_S3C24XX_CPUFREQ
171 bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
172 depends on ARCH_S3C24XX
173 select ARM_S3C_CPUFREQ
175 This enables the CPUfreq driver for the Samsung S3C24XX family
178 For details, take a look at <file:Documentation/cpu-freq>.
182 config ARM_S3C24XX_CPUFREQ_DEBUG
183 bool "Debug CPUfreq Samsung driver core"
184 depends on ARM_S3C24XX_CPUFREQ
186 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
188 config ARM_S3C24XX_CPUFREQ_IODEBUG
189 bool "Debug CPUfreq Samsung driver IO timing"
190 depends on ARM_S3C24XX_CPUFREQ
192 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
194 config ARM_S3C24XX_CPUFREQ_DEBUGFS
195 bool "Export debugfs for CPUFreq"
196 depends on ARM_S3C24XX_CPUFREQ && DEBUG_FS
198 Export status information via debugfs.
200 config ARM_S3C2410_CPUFREQ
202 depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2410
203 select S3C2410_CPUFREQ_UTILS
205 CPU Frequency scaling support for S3C2410
207 config ARM_S3C2412_CPUFREQ
209 depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2412
211 select S3C2412_IOTIMING
213 CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs.
215 config ARM_S3C2416_CPUFREQ
216 bool "S3C2416 CPU Frequency scaling support"
217 depends on CPU_S3C2416
219 This adds the CPUFreq driver for the Samsung S3C2416 and
220 S3C2450 SoC. The S3C2416 supports changing the rate of the
221 armdiv clock source and also entering a so called dynamic
222 voltage scaling mode in which it is possible to reduce the
223 core voltage of the CPU.
227 config ARM_S3C2416_CPUFREQ_VCORESCALE
228 bool "Allow voltage scaling for S3C2416 arm core"
229 depends on ARM_S3C2416_CPUFREQ && REGULATOR
231 Enable CPU voltage scaling when entering the dvs mode.
232 It uses information gathered through existing hardware and
233 tests but not documented in any datasheet.
237 config ARM_S3C2440_CPUFREQ
238 bool "S3C2440/S3C2442 CPU Frequency scaling support"
239 depends on ARM_S3C24XX_CPUFREQ && (CPU_S3C2440 || CPU_S3C2442)
240 select S3C2410_CPUFREQ_UTILS
243 CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs.
245 config ARM_S3C64XX_CPUFREQ
246 bool "Samsung S3C64XX"
247 depends on CPU_S3C6410
250 This adds the CPUFreq driver for Samsung S3C6410 SoC.
254 config ARM_S5PV210_CPUFREQ
255 bool "Samsung S5PV210 and S5PC110"
256 depends on CPU_S5PV210
259 This adds the CPUFreq driver for Samsung S5PV210 and
264 config ARM_SA1100_CPUFREQ
267 config ARM_SA1110_CPUFREQ
270 config ARM_SCMI_CPUFREQ
271 tristate "SCMI based CPUfreq driver"
272 depends on ARM_SCMI_PROTOCOL || COMPILE_TEST
275 This adds the CPUfreq driver support for ARM platforms using SCMI
276 protocol for CPU power management.
278 This driver uses SCMI Message Protocol driver to interact with the
279 firmware providing the CPU DVFS functionality.
281 config ARM_SPEAR_CPUFREQ
282 bool "SPEAr CPUFreq support"
283 depends on PLAT_SPEAR
286 This adds the CPUFreq driver support for SPEAr SOCs.
288 config ARM_STI_CPUFREQ
289 tristate "STi CPUFreq support"
290 depends on SOC_STIH407
292 This driver uses the generic OPP framework to match the running
293 platform with a predefined set of suitable values. If not provided
294 we will fall-back so safe-values contained in Device Tree. Enable
295 this config option if you wish to add CPUFreq support for STi based
298 config ARM_TANGO_CPUFREQ
300 depends on CPUFREQ_DT && ARCH_TANGO
303 config ARM_TEGRA20_CPUFREQ
304 tristate "Tegra20 CPUFreq support"
305 depends on ARCH_TEGRA
308 This adds the CPUFreq driver support for Tegra20 SOCs.
310 config ARM_TEGRA124_CPUFREQ
311 bool "Tegra124 CPUFreq support"
312 depends on ARCH_TEGRA && CPUFREQ_DT
315 This adds the CPUFreq driver support for Tegra124 SOCs.
317 config ARM_TEGRA186_CPUFREQ
318 tristate "Tegra186 CPUFreq support"
319 depends on ARCH_TEGRA && TEGRA_BPMP
321 This adds the CPUFreq driver support for Tegra186 SOCs.
323 config ARM_TI_CPUFREQ
324 bool "Texas Instruments CPUFreq support"
325 depends on ARCH_OMAP2PLUS
327 This driver enables valid OPPs on the running platform based on
328 values contained within the SoC in use. Enable this in order to
329 use the cpufreq-dt driver on all Texas Instruments platforms that
330 provide dt based operating-points-v2 tables with opp-supported-hw
331 data provided. Required for cpufreq support on AM335x, AM437x,
332 DRA7x, and AM57x platforms.
334 config ARM_PXA2xx_CPUFREQ
335 tristate "Intel PXA2xx CPUfreq driver"
336 depends on PXA27x || PXA25x
338 This add the CPUFreq driver support for Intel PXA2xx SOCs.