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
44 select ARMADA_AP_CPU_CLK
46 This enables the CPUFreq driver support for Marvell
48 Armada8K device has the AP806 which supports scaling
49 to any full integer divider.
53 config ARM_SCPI_CPUFREQ
54 tristate "SCPI based CPUfreq driver"
55 depends on ARM_SCPI_PROTOCOL && COMMON_CLK_SCPI
57 This adds the CPUfreq driver support for ARM platforms using SCPI
58 protocol for CPU power management.
60 This driver uses SCPI Message Protocol driver to interact with the
61 firmware providing the CPU DVFS functionality.
63 config ARM_VEXPRESS_SPC_CPUFREQ
64 tristate "Versatile Express SPC based CPUfreq driver"
65 depends on ARM_CPU_TOPOLOGY && HAVE_CLK
66 depends on ARCH_VEXPRESS_SPC
69 This add the CPUfreq driver support for Versatile Express
70 big.LITTLE platforms using SPC for power management.
72 config ARM_BRCMSTB_AVS_CPUFREQ
73 tristate "Broadcom STB AVS CPUfreq driver"
74 depends on ARCH_BRCMSTB || COMPILE_TEST
77 Some Broadcom STB SoCs use a co-processor running proprietary firmware
78 ("AVS") to handle voltage and frequency scaling. This driver provides
79 a standard CPUfreq interface to to the firmware.
81 Say Y, if you have a Broadcom SoC with AVS support for DFS or DVFS.
83 config ARM_HIGHBANK_CPUFREQ
84 tristate "Calxeda Highbank-based"
85 depends on ARCH_HIGHBANK && CPUFREQ_DT && REGULATOR
88 This adds the CPUFreq driver for Calxeda Highbank SoC
93 config ARM_IMX6Q_CPUFREQ
94 tristate "Freescale i.MX6 cpufreq support"
96 depends on REGULATOR_ANATOP
97 select NVMEM_IMX_OCOTP
100 This adds cpufreq driver support for Freescale i.MX6 series SoCs.
104 config ARM_IMX_CPUFREQ_DT
105 tristate "Freescale i.MX8M cpufreq support"
106 depends on ARCH_MXC && CPUFREQ_DT
108 This adds cpufreq driver support for Freescale i.MX8M series SoCs,
113 config ARM_KIRKWOOD_CPUFREQ
114 def_bool MACH_KIRKWOOD
116 This adds the CPUFreq driver for Marvell Kirkwood
119 config ARM_MEDIATEK_CPUFREQ
120 tristate "CPU Frequency scaling support for MediaTek SoCs"
121 depends on ARCH_MEDIATEK && REGULATOR
124 This adds the CPUFreq driver support for MediaTek SoCs.
126 config ARM_OMAP2PLUS_CPUFREQ
128 depends on ARCH_OMAP2PLUS
129 default ARCH_OMAP2PLUS
131 config ARM_QCOM_CPUFREQ_NVMEM
132 tristate "Qualcomm nvmem based CPUFreq"
134 depends on QCOM_QFPROM
138 This adds the CPUFreq driver for Qualcomm Kryo SoC based boards.
142 config ARM_QCOM_CPUFREQ_HW
143 tristate "QCOM CPUFreq HW driver"
144 depends on ARCH_QCOM || COMPILE_TEST
146 Support for the CPUFreq HW driver.
147 Some QCOM chipsets have a HW engine to offload the steps
148 necessary for changing the frequency of the CPUs. Firmware loaded
149 in this engine exposes a programming interface to the OS.
150 The driver implements the cpufreq interface for this HW engine.
151 Say Y if you want to support CPUFreq HW.
153 config ARM_RASPBERRYPI_CPUFREQ
154 tristate "Raspberry Pi cpufreq support"
155 depends on CLK_RASPBERRYPI || COMPILE_TEST
157 This adds the CPUFreq driver for Raspberry Pi
161 config ARM_S3C_CPUFREQ
164 Internal configuration node for common cpufreq on Samsung SoC
166 config ARM_S3C24XX_CPUFREQ
167 bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
168 depends on ARCH_S3C24XX
169 select ARM_S3C_CPUFREQ
171 This enables the CPUfreq driver for the Samsung S3C24XX family
174 For details, take a look at <file:Documentation/cpu-freq>.
178 config ARM_S3C24XX_CPUFREQ_DEBUG
179 bool "Debug CPUfreq Samsung driver core"
180 depends on ARM_S3C24XX_CPUFREQ
182 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
184 config ARM_S3C24XX_CPUFREQ_IODEBUG
185 bool "Debug CPUfreq Samsung driver IO timing"
186 depends on ARM_S3C24XX_CPUFREQ
188 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
190 config ARM_S3C24XX_CPUFREQ_DEBUGFS
191 bool "Export debugfs for CPUFreq"
192 depends on ARM_S3C24XX_CPUFREQ && DEBUG_FS
194 Export status information via debugfs.
196 config ARM_S3C2410_CPUFREQ
198 depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2410
199 select S3C2410_CPUFREQ_UTILS
201 CPU Frequency scaling support for S3C2410
203 config ARM_S3C2412_CPUFREQ
205 depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2412
207 select S3C2412_IOTIMING
209 CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs.
211 config ARM_S3C2416_CPUFREQ
212 bool "S3C2416 CPU Frequency scaling support"
213 depends on CPU_S3C2416
215 This adds the CPUFreq driver for the Samsung S3C2416 and
216 S3C2450 SoC. The S3C2416 supports changing the rate of the
217 armdiv clock source and also entering a so called dynamic
218 voltage scaling mode in which it is possible to reduce the
219 core voltage of the CPU.
223 config ARM_S3C2416_CPUFREQ_VCORESCALE
224 bool "Allow voltage scaling for S3C2416 arm core"
225 depends on ARM_S3C2416_CPUFREQ && REGULATOR
227 Enable CPU voltage scaling when entering the dvs mode.
228 It uses information gathered through existing hardware and
229 tests but not documented in any datasheet.
233 config ARM_S3C2440_CPUFREQ
234 bool "S3C2440/S3C2442 CPU Frequency scaling support"
235 depends on ARM_S3C24XX_CPUFREQ && (CPU_S3C2440 || CPU_S3C2442)
236 select S3C2410_CPUFREQ_UTILS
239 CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs.
241 config ARM_S3C64XX_CPUFREQ
242 bool "Samsung S3C64XX"
243 depends on CPU_S3C6410
246 This adds the CPUFreq driver for Samsung S3C6410 SoC.
250 config ARM_S5PV210_CPUFREQ
251 bool "Samsung S5PV210 and S5PC110"
252 depends on CPU_S5PV210
255 This adds the CPUFreq driver for Samsung S5PV210 and
260 config ARM_SA1100_CPUFREQ
263 config ARM_SA1110_CPUFREQ
266 config ARM_SCMI_CPUFREQ
267 tristate "SCMI based CPUfreq driver"
268 depends on ARM_SCMI_PROTOCOL || COMPILE_TEST
271 This adds the CPUfreq driver support for ARM platforms using SCMI
272 protocol for CPU power management.
274 This driver uses SCMI Message Protocol driver to interact with the
275 firmware providing the CPU DVFS functionality.
277 config ARM_SPEAR_CPUFREQ
278 bool "SPEAr CPUFreq support"
279 depends on PLAT_SPEAR
282 This adds the CPUFreq driver support for SPEAr SOCs.
284 config ARM_STI_CPUFREQ
285 tristate "STi CPUFreq support"
286 depends on SOC_STIH407
288 This driver uses the generic OPP framework to match the running
289 platform with a predefined set of suitable values. If not provided
290 we will fall-back so safe-values contained in Device Tree. Enable
291 this config option if you wish to add CPUFreq support for STi based
294 config ARM_TANGO_CPUFREQ
296 depends on CPUFREQ_DT && ARCH_TANGO
299 config ARM_TEGRA20_CPUFREQ
300 tristate "Tegra20/30 CPUFreq support"
301 depends on ARCH_TEGRA && CPUFREQ_DT
304 This adds the CPUFreq driver support for Tegra20/30 SOCs.
306 config ARM_TEGRA124_CPUFREQ
307 bool "Tegra124 CPUFreq support"
308 depends on ARCH_TEGRA && CPUFREQ_DT
311 This adds the CPUFreq driver support for Tegra124 SOCs.
313 config ARM_TEGRA186_CPUFREQ
314 tristate "Tegra186 CPUFreq support"
315 depends on ARCH_TEGRA && TEGRA_BPMP
317 This adds the CPUFreq driver support for Tegra186 SOCs.
319 config ARM_TEGRA194_CPUFREQ
320 tristate "Tegra194 CPUFreq support"
321 depends on ARCH_TEGRA_194_SOC && TEGRA_BPMP
324 This adds CPU frequency driver support for Tegra194 SOCs.
326 config ARM_TI_CPUFREQ
327 bool "Texas Instruments CPUFreq support"
328 depends on ARCH_OMAP2PLUS
329 default ARCH_OMAP2PLUS
331 This driver enables valid OPPs on the running platform based on
332 values contained within the SoC in use. Enable this in order to
333 use the cpufreq-dt driver on all Texas Instruments platforms that
334 provide dt based operating-points-v2 tables with opp-supported-hw
335 data provided. Required for cpufreq support on AM335x, AM437x,
336 DRA7x, and AM57x platforms.
338 config ARM_PXA2xx_CPUFREQ
339 tristate "Intel PXA2xx CPUfreq driver"
340 depends on PXA27x || PXA25x
342 This add the CPUFreq driver support for Intel PXA2xx SOCs.