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_ARMADA_37XX_CPUFREQ
23 tristate "Armada 37xx CPUFreq support"
24 depends on ARCH_MVEBU && CPUFREQ_DT
26 This adds the CPUFreq driver support for Marvell Armada 37xx SoCs.
27 The Armada 37xx PMU supports 4 frequency and VDD levels.
29 config ARM_ARMADA_8K_CPUFREQ
30 tristate "Armada 8K CPUFreq driver"
31 depends on ARCH_MVEBU && CPUFREQ_DT
33 This enables the CPUFreq driver support for Marvell
35 Armada8K device has the AP806 which supports scaling
36 to any full integer divider.
40 # big LITTLE core layer and glue drivers
41 config ARM_BIG_LITTLE_CPUFREQ
42 tristate "Generic ARM big LITTLE CPUfreq driver"
43 depends on ARM_CPU_TOPOLOGY && HAVE_CLK
46 This enables the Generic CPUfreq driver for ARM big.LITTLE platforms.
48 config ARM_SCPI_CPUFREQ
49 tristate "SCPI based CPUfreq driver"
50 depends on ARM_SCPI_PROTOCOL && COMMON_CLK_SCPI
52 This adds the CPUfreq driver support for ARM platforms using SCPI
53 protocol for CPU power management.
55 This driver uses SCPI Message Protocol driver to interact with the
56 firmware providing the CPU DVFS functionality.
58 config ARM_VEXPRESS_SPC_CPUFREQ
59 tristate "Versatile Express SPC based CPUfreq driver"
60 depends on ARM_BIG_LITTLE_CPUFREQ && ARCH_VEXPRESS_SPC
62 This add the CPUfreq driver support for Versatile Express
63 big.LITTLE platforms using SPC for power management.
65 config ARM_BRCMSTB_AVS_CPUFREQ
66 tristate "Broadcom STB AVS CPUfreq driver"
67 depends on ARCH_BRCMSTB || COMPILE_TEST
70 Some Broadcom STB SoCs use a co-processor running proprietary firmware
71 ("AVS") to handle voltage and frequency scaling. This driver provides
72 a standard CPUfreq interface to to the firmware.
74 Say Y, if you have a Broadcom SoC with AVS support for DFS or DVFS.
76 config ARM_HIGHBANK_CPUFREQ
77 tristate "Calxeda Highbank-based"
78 depends on ARCH_HIGHBANK && CPUFREQ_DT && REGULATOR
81 This adds the CPUFreq driver for Calxeda Highbank SoC
86 config ARM_IMX6Q_CPUFREQ
87 tristate "Freescale i.MX6 cpufreq support"
89 depends on REGULATOR_ANATOP
92 This adds cpufreq driver support for Freescale i.MX6 series SoCs.
96 config ARM_IMX_CPUFREQ_DT
97 tristate "Freescale i.MX8M cpufreq support"
98 depends on ARCH_MXC && CPUFREQ_DT
100 This adds cpufreq driver support for Freescale i.MX8M series SoCs,
105 config ARM_KIRKWOOD_CPUFREQ
106 def_bool MACH_KIRKWOOD
108 This adds the CPUFreq driver for Marvell Kirkwood
111 config ARM_MEDIATEK_CPUFREQ
112 tristate "CPU Frequency scaling support for MediaTek SoCs"
113 depends on ARCH_MEDIATEK && REGULATOR
116 This adds the CPUFreq driver support for MediaTek SoCs.
118 config ARM_OMAP2PLUS_CPUFREQ
120 depends on ARCH_OMAP2PLUS
121 default ARCH_OMAP2PLUS
123 config ARM_QCOM_CPUFREQ_KRYO
124 tristate "Qualcomm Kryo based CPUFreq"
126 depends on QCOM_QFPROM
130 This adds the CPUFreq driver for Qualcomm Kryo SoC based boards.
134 config ARM_QCOM_CPUFREQ_HW
135 tristate "QCOM CPUFreq HW driver"
136 depends on ARCH_QCOM || COMPILE_TEST
138 Support for the CPUFreq HW driver.
139 Some QCOM chipsets have a HW engine to offload the steps
140 necessary for changing the frequency of the CPUs. Firmware loaded
141 in this engine exposes a programming interface to the OS.
142 The driver implements the cpufreq interface for this HW engine.
143 Say Y if you want to support CPUFreq HW.
145 config ARM_RASPBERRYPI_CPUFREQ
146 tristate "Raspberry Pi cpufreq support"
147 depends on CLK_RASPBERRYPI || COMPILE_TEST
149 This adds the CPUFreq driver for Raspberry Pi
153 config ARM_S3C_CPUFREQ
156 Internal configuration node for common cpufreq on Samsung SoC
158 config ARM_S3C24XX_CPUFREQ
159 bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
160 depends on ARCH_S3C24XX
161 select ARM_S3C_CPUFREQ
163 This enables the CPUfreq driver for the Samsung S3C24XX family
166 For details, take a look at <file:Documentation/cpu-freq>.
170 config ARM_S3C24XX_CPUFREQ_DEBUG
171 bool "Debug CPUfreq Samsung driver core"
172 depends on ARM_S3C24XX_CPUFREQ
174 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
176 config ARM_S3C24XX_CPUFREQ_IODEBUG
177 bool "Debug CPUfreq Samsung driver IO timing"
178 depends on ARM_S3C24XX_CPUFREQ
180 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
182 config ARM_S3C24XX_CPUFREQ_DEBUGFS
183 bool "Export debugfs for CPUFreq"
184 depends on ARM_S3C24XX_CPUFREQ && DEBUG_FS
186 Export status information via debugfs.
188 config ARM_S3C2410_CPUFREQ
190 depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2410
191 select S3C2410_CPUFREQ_UTILS
193 CPU Frequency scaling support for S3C2410
195 config ARM_S3C2412_CPUFREQ
197 depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2412
199 select S3C2412_IOTIMING
201 CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs.
203 config ARM_S3C2416_CPUFREQ
204 bool "S3C2416 CPU Frequency scaling support"
205 depends on CPU_S3C2416
207 This adds the CPUFreq driver for the Samsung S3C2416 and
208 S3C2450 SoC. The S3C2416 supports changing the rate of the
209 armdiv clock source and also entering a so called dynamic
210 voltage scaling mode in which it is possible to reduce the
211 core voltage of the CPU.
215 config ARM_S3C2416_CPUFREQ_VCORESCALE
216 bool "Allow voltage scaling for S3C2416 arm core"
217 depends on ARM_S3C2416_CPUFREQ && REGULATOR
219 Enable CPU voltage scaling when entering the dvs mode.
220 It uses information gathered through existing hardware and
221 tests but not documented in any datasheet.
225 config ARM_S3C2440_CPUFREQ
226 bool "S3C2440/S3C2442 CPU Frequency scaling support"
227 depends on ARM_S3C24XX_CPUFREQ && (CPU_S3C2440 || CPU_S3C2442)
228 select S3C2410_CPUFREQ_UTILS
231 CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs.
233 config ARM_S3C64XX_CPUFREQ
234 bool "Samsung S3C64XX"
235 depends on CPU_S3C6410
238 This adds the CPUFreq driver for Samsung S3C6410 SoC.
242 config ARM_S5PV210_CPUFREQ
243 bool "Samsung S5PV210 and S5PC110"
244 depends on CPU_S5PV210
247 This adds the CPUFreq driver for Samsung S5PV210 and
252 config ARM_SA1100_CPUFREQ
255 config ARM_SA1110_CPUFREQ
258 config ARM_SCMI_CPUFREQ
259 tristate "SCMI based CPUfreq driver"
260 depends on ARM_SCMI_PROTOCOL || COMPILE_TEST
263 This adds the CPUfreq driver support for ARM platforms using SCMI
264 protocol for CPU power management.
266 This driver uses SCMI Message Protocol driver to interact with the
267 firmware providing the CPU DVFS functionality.
269 config ARM_SPEAR_CPUFREQ
270 bool "SPEAr CPUFreq support"
271 depends on PLAT_SPEAR
274 This adds the CPUFreq driver support for SPEAr SOCs.
276 config ARM_STI_CPUFREQ
277 tristate "STi CPUFreq support"
278 depends on SOC_STIH407
280 This driver uses the generic OPP framework to match the running
281 platform with a predefined set of suitable values. If not provided
282 we will fall-back so safe-values contained in Device Tree. Enable
283 this config option if you wish to add CPUFreq support for STi based
286 config ARM_TANGO_CPUFREQ
288 depends on CPUFREQ_DT && ARCH_TANGO
291 config ARM_TEGRA20_CPUFREQ
292 tristate "Tegra20 CPUFreq support"
293 depends on ARCH_TEGRA
296 This adds the CPUFreq driver support for Tegra20 SOCs.
298 config ARM_TEGRA124_CPUFREQ
299 bool "Tegra124 CPUFreq support"
300 depends on ARCH_TEGRA && CPUFREQ_DT
303 This adds the CPUFreq driver support for Tegra124 SOCs.
305 config ARM_TEGRA186_CPUFREQ
306 tristate "Tegra186 CPUFreq support"
307 depends on ARCH_TEGRA && TEGRA_BPMP
309 This adds the CPUFreq driver support for Tegra186 SOCs.
311 config ARM_TI_CPUFREQ
312 bool "Texas Instruments CPUFreq support"
313 depends on ARCH_OMAP2PLUS
315 This driver enables valid OPPs on the running platform based on
316 values contained within the SoC in use. Enable this in order to
317 use the cpufreq-dt driver on all Texas Instruments platforms that
318 provide dt based operating-points-v2 tables with opp-supported-hw
319 data provided. Required for cpufreq support on AM335x, AM437x,
320 DRA7x, and AM57x platforms.
322 config ARM_PXA2xx_CPUFREQ
323 tristate "Intel PXA2xx CPUfreq driver"
324 depends on PXA27x || PXA25x
326 This add the CPUFreq driver support for Intel PXA2xx SOCs.