2 # ARM CPU Frequency scaling drivers
5 config ACPI_CPPC_CPUFREQ
6 tristate "CPUFreq driver based on the ACPI CPPC spec"
7 depends on ACPI_PROCESSOR
10 This adds a CPUFreq driver which uses CPPC methods
11 as described in the ACPIv5.1 spec. CPPC stands for
12 Collaborative Processor Performance Controls. It
13 is based on an abstract continuous scale of CPU
14 performance values which allows the remote power
15 processor to flexibly optimize for power and
16 performance. CPPC relies on power management firmware
17 support for its operation.
21 config ARM_ARMADA_37XX_CPUFREQ
22 tristate "Armada 37xx CPUFreq support"
23 depends on ARCH_MVEBU && CPUFREQ_DT
25 This adds the CPUFreq driver support for Marvell Armada 37xx SoCs.
26 The Armada 37xx PMU supports 4 frequency and VDD levels.
28 config ARM_ARMADA_8K_CPUFREQ
29 tristate "Armada 8K CPUFreq driver"
30 depends on ARCH_MVEBU && CPUFREQ_DT
32 This enables the CPUFreq driver support for Marvell
34 Armada8K device has the AP806 which supports scaling
35 to any full integer divider.
39 # big LITTLE core layer and glue drivers
40 config ARM_BIG_LITTLE_CPUFREQ
41 tristate "Generic ARM big LITTLE CPUfreq driver"
42 depends on ARM_CPU_TOPOLOGY && HAVE_CLK
43 # if CPU_THERMAL is on and THERMAL=m, ARM_BIT_LITTLE_CPUFREQ cannot be =y
44 depends on !CPU_THERMAL || THERMAL
47 This enables the Generic CPUfreq driver for ARM big.LITTLE platforms.
49 config ARM_SCPI_CPUFREQ
50 tristate "SCPI based CPUfreq driver"
51 depends on ARM_SCPI_PROTOCOL && COMMON_CLK_SCPI
52 depends on !CPU_THERMAL || THERMAL
54 This adds the CPUfreq driver support for ARM platforms using SCPI
55 protocol for CPU power management.
57 This driver uses SCPI Message Protocol driver to interact with the
58 firmware providing the CPU DVFS functionality.
60 config ARM_VEXPRESS_SPC_CPUFREQ
61 tristate "Versatile Express SPC based CPUfreq driver"
62 depends on ARM_BIG_LITTLE_CPUFREQ && ARCH_VEXPRESS_SPC
64 This add the CPUfreq driver support for Versatile Express
65 big.LITTLE platforms using SPC for power management.
67 config ARM_BRCMSTB_AVS_CPUFREQ
68 tristate "Broadcom STB AVS CPUfreq driver"
69 depends on ARCH_BRCMSTB || COMPILE_TEST
72 Some Broadcom STB SoCs use a co-processor running proprietary firmware
73 ("AVS") to handle voltage and frequency scaling. This driver provides
74 a standard CPUfreq interface to to the firmware.
76 Say Y, if you have a Broadcom SoC with AVS support for DFS or DVFS.
78 config ARM_HIGHBANK_CPUFREQ
79 tristate "Calxeda Highbank-based"
80 depends on ARCH_HIGHBANK && CPUFREQ_DT && REGULATOR
83 This adds the CPUFreq driver for Calxeda Highbank SoC
88 config ARM_IMX6Q_CPUFREQ
89 tristate "Freescale i.MX6 cpufreq support"
91 depends on REGULATOR_ANATOP
94 This adds cpufreq driver support for Freescale i.MX6 series SoCs.
98 config ARM_KIRKWOOD_CPUFREQ
99 def_bool MACH_KIRKWOOD
101 This adds the CPUFreq driver for Marvell Kirkwood
104 config ARM_MEDIATEK_CPUFREQ
105 tristate "CPU Frequency scaling support for MediaTek SoCs"
106 depends on ARCH_MEDIATEK && REGULATOR
107 depends on !CPU_THERMAL || THERMAL
110 This adds the CPUFreq driver support for MediaTek SoCs.
112 config ARM_OMAP2PLUS_CPUFREQ
114 depends on ARCH_OMAP2PLUS
115 default ARCH_OMAP2PLUS
117 config ARM_QCOM_CPUFREQ_KRYO
118 tristate "Qualcomm Kryo based CPUFreq"
120 depends on QCOM_QFPROM
124 This adds the CPUFreq driver for Qualcomm Kryo SoC based boards.
128 config ARM_QCOM_CPUFREQ_HW
129 tristate "QCOM CPUFreq HW driver"
130 depends on ARCH_QCOM || COMPILE_TEST
132 Support for the CPUFreq HW driver.
133 Some QCOM chipsets have a HW engine to offload the steps
134 necessary for changing the frequency of the CPUs. Firmware loaded
135 in this engine exposes a programming interface to the OS.
136 The driver implements the cpufreq interface for this HW engine.
137 Say Y if you want to support CPUFreq HW.
139 config ARM_S3C_CPUFREQ
142 Internal configuration node for common cpufreq on Samsung SoC
144 config ARM_S3C24XX_CPUFREQ
145 bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
146 depends on ARCH_S3C24XX
147 select ARM_S3C_CPUFREQ
149 This enables the CPUfreq driver for the Samsung S3C24XX family
152 For details, take a look at <file:Documentation/cpu-freq>.
156 config ARM_S3C24XX_CPUFREQ_DEBUG
157 bool "Debug CPUfreq Samsung driver core"
158 depends on ARM_S3C24XX_CPUFREQ
160 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
162 config ARM_S3C24XX_CPUFREQ_IODEBUG
163 bool "Debug CPUfreq Samsung driver IO timing"
164 depends on ARM_S3C24XX_CPUFREQ
166 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
168 config ARM_S3C24XX_CPUFREQ_DEBUGFS
169 bool "Export debugfs for CPUFreq"
170 depends on ARM_S3C24XX_CPUFREQ && DEBUG_FS
172 Export status information via debugfs.
174 config ARM_S3C2410_CPUFREQ
176 depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2410
177 select S3C2410_CPUFREQ_UTILS
179 CPU Frequency scaling support for S3C2410
181 config ARM_S3C2412_CPUFREQ
183 depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2412
185 select S3C2412_IOTIMING
187 CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs.
189 config ARM_S3C2416_CPUFREQ
190 bool "S3C2416 CPU Frequency scaling support"
191 depends on CPU_S3C2416
193 This adds the CPUFreq driver for the Samsung S3C2416 and
194 S3C2450 SoC. The S3C2416 supports changing the rate of the
195 armdiv clock source and also entering a so called dynamic
196 voltage scaling mode in which it is possible to reduce the
197 core voltage of the CPU.
201 config ARM_S3C2416_CPUFREQ_VCORESCALE
202 bool "Allow voltage scaling for S3C2416 arm core"
203 depends on ARM_S3C2416_CPUFREQ && REGULATOR
205 Enable CPU voltage scaling when entering the dvs mode.
206 It uses information gathered through existing hardware and
207 tests but not documented in any datasheet.
211 config ARM_S3C2440_CPUFREQ
212 bool "S3C2440/S3C2442 CPU Frequency scaling support"
213 depends on ARM_S3C24XX_CPUFREQ && (CPU_S3C2440 || CPU_S3C2442)
214 select S3C2410_CPUFREQ_UTILS
217 CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs.
219 config ARM_S3C64XX_CPUFREQ
220 bool "Samsung S3C64XX"
221 depends on CPU_S3C6410
224 This adds the CPUFreq driver for Samsung S3C6410 SoC.
228 config ARM_S5PV210_CPUFREQ
229 bool "Samsung S5PV210 and S5PC110"
230 depends on CPU_S5PV210
233 This adds the CPUFreq driver for Samsung S5PV210 and
238 config ARM_SA1100_CPUFREQ
241 config ARM_SA1110_CPUFREQ
244 config ARM_SCMI_CPUFREQ
245 tristate "SCMI based CPUfreq driver"
246 depends on ARM_SCMI_PROTOCOL || COMPILE_TEST
247 depends on !CPU_THERMAL || THERMAL
250 This adds the CPUfreq driver support for ARM platforms using SCMI
251 protocol for CPU power management.
253 This driver uses SCMI Message Protocol driver to interact with the
254 firmware providing the CPU DVFS functionality.
256 config ARM_SPEAR_CPUFREQ
257 bool "SPEAr CPUFreq support"
258 depends on PLAT_SPEAR
261 This adds the CPUFreq driver support for SPEAr SOCs.
263 config ARM_STI_CPUFREQ
264 tristate "STi CPUFreq support"
265 depends on SOC_STIH407
267 This driver uses the generic OPP framework to match the running
268 platform with a predefined set of suitable values. If not provided
269 we will fall-back so safe-values contained in Device Tree. Enable
270 this config option if you wish to add CPUFreq support for STi based
273 config ARM_TANGO_CPUFREQ
275 depends on CPUFREQ_DT && ARCH_TANGO
278 config ARM_TEGRA20_CPUFREQ
279 tristate "Tegra20 CPUFreq support"
280 depends on ARCH_TEGRA
283 This adds the CPUFreq driver support for Tegra20 SOCs.
285 config ARM_TEGRA124_CPUFREQ
286 tristate "Tegra124 CPUFreq support"
287 depends on ARCH_TEGRA && CPUFREQ_DT && REGULATOR
290 This adds the CPUFreq driver support for Tegra124 SOCs.
292 config ARM_TEGRA186_CPUFREQ
293 tristate "Tegra186 CPUFreq support"
294 depends on ARCH_TEGRA && TEGRA_BPMP
296 This adds the CPUFreq driver support for Tegra186 SOCs.
298 config ARM_TI_CPUFREQ
299 bool "Texas Instruments CPUFreq support"
300 depends on ARCH_OMAP2PLUS
302 This driver enables valid OPPs on the running platform based on
303 values contained within the SoC in use. Enable this in order to
304 use the cpufreq-dt driver on all Texas Instruments platforms that
305 provide dt based operating-points-v2 tables with opp-supported-hw
306 data provided. Required for cpufreq support on AM335x, AM437x,
307 DRA7x, and AM57x platforms.
309 config ARM_PXA2xx_CPUFREQ
310 tristate "Intel PXA2xx CPUfreq driver"
311 depends on PXA27x || PXA25x
313 This add the CPUFreq driver support for Intel PXA2xx SOCs.