2 # ARM CPU Frequency scaling drivers
5 # big LITTLE core layer and glue drivers
6 config ARM_BIG_LITTLE_CPUFREQ
7 tristate "Generic ARM big LITTLE CPUfreq driver"
8 depends on (ARM_CPU_TOPOLOGY || ARM64) && HAVE_CLK
11 This enables the Generic CPUfreq driver for ARM big.LITTLE platforms.
13 config ARM_DT_BL_CPUFREQ
14 tristate "Generic probing via DT for ARM big LITTLE CPUfreq driver"
15 depends on ARM_BIG_LITTLE_CPUFREQ && OF
17 This enables probing via DT for Generic CPUfreq driver for ARM
18 big.LITTLE platform. This gets frequency tables from DT.
20 config ARM_VEXPRESS_SPC_CPUFREQ
21 tristate "Versatile Express SPC based CPUfreq driver"
22 depends on ARM_BIG_LITTLE_CPUFREQ && ARCH_VEXPRESS_SPC
24 This add the CPUfreq driver support for Versatile Express
25 big.LITTLE platforms using SPC for power management.
27 config ARM_EXYNOS5440_CPUFREQ
28 tristate "SAMSUNG EXYNOS5440"
29 depends on SOC_EXYNOS5440
30 depends on HAVE_CLK && OF
34 This adds the CPUFreq driver for Samsung EXYNOS5440
35 SoC. The nature of exynos5440 clock controller is
36 different than previous exynos controllers so not using
37 the common exynos framework.
41 config ARM_HIGHBANK_CPUFREQ
42 tristate "Calxeda Highbank-based"
43 depends on ARCH_HIGHBANK && CPUFREQ_DT && REGULATOR
46 This adds the CPUFreq driver for Calxeda Highbank SoC
51 config ARM_HISI_ACPU_CPUFREQ
52 tristate "Hisilicon ACPU CPUfreq driver"
53 depends on ARCH_HISI && CPUFREQ_DT
56 This enables the hisilicon ACPU CPUfreq driver.
60 config ARM_IMX6Q_CPUFREQ
61 tristate "Freescale i.MX6 cpufreq support"
63 depends on REGULATOR_ANATOP
66 This adds cpufreq driver support for Freescale i.MX6 series SoCs.
71 tristate "CPUfreq driver for ARM Integrator CPUs"
72 depends on ARCH_INTEGRATOR
75 This enables the CPUfreq driver for ARM Integrator CPUs.
78 config ARM_KIRKWOOD_CPUFREQ
79 def_bool MACH_KIRKWOOD
81 This adds the CPUFreq driver for Marvell Kirkwood
84 config ARM_MT8173_CPUFREQ
85 bool "Mediatek MT8173 CPUFreq support"
86 depends on ARCH_MEDIATEK && REGULATOR
87 depends on !CPU_THERMAL || THERMAL=y
90 This adds the CPUFreq driver support for Mediatek MT8173 SoC.
92 config ARM_OMAP2PLUS_CPUFREQ
94 depends on ARCH_OMAP2PLUS
95 default ARCH_OMAP2PLUS
97 config ARM_S3C_CPUFREQ
100 Internal configuration node for common cpufreq on Samsung SoC
102 config ARM_S3C24XX_CPUFREQ
103 bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
104 depends on ARCH_S3C24XX
105 select ARM_S3C_CPUFREQ
107 This enables the CPUfreq driver for the Samsung S3C24XX family
110 For details, take a look at <file:Documentation/cpu-freq>.
114 config ARM_S3C24XX_CPUFREQ_DEBUG
115 bool "Debug CPUfreq Samsung driver core"
116 depends on ARM_S3C24XX_CPUFREQ
118 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
120 config ARM_S3C24XX_CPUFREQ_IODEBUG
121 bool "Debug CPUfreq Samsung driver IO timing"
122 depends on ARM_S3C24XX_CPUFREQ
124 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
126 config ARM_S3C24XX_CPUFREQ_DEBUGFS
127 bool "Export debugfs for CPUFreq"
128 depends on ARM_S3C24XX_CPUFREQ && DEBUG_FS
130 Export status information via debugfs.
132 config ARM_S3C2410_CPUFREQ
134 depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2410
135 select S3C2410_CPUFREQ_UTILS
137 CPU Frequency scaling support for S3C2410
139 config ARM_S3C2412_CPUFREQ
141 depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2412
143 select S3C2412_IOTIMING
145 CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs.
147 config ARM_S3C2416_CPUFREQ
148 bool "S3C2416 CPU Frequency scaling support"
149 depends on CPU_S3C2416
151 This adds the CPUFreq driver for the Samsung S3C2416 and
152 S3C2450 SoC. The S3C2416 supports changing the rate of the
153 armdiv clock source and also entering a so called dynamic
154 voltage scaling mode in which it is possible to reduce the
155 core voltage of the CPU.
159 config ARM_S3C2416_CPUFREQ_VCORESCALE
160 bool "Allow voltage scaling for S3C2416 arm core"
161 depends on ARM_S3C2416_CPUFREQ && REGULATOR
163 Enable CPU voltage scaling when entering the dvs mode.
164 It uses information gathered through existing hardware and
165 tests but not documented in any datasheet.
169 config ARM_S3C2440_CPUFREQ
170 bool "S3C2440/S3C2442 CPU Frequency scaling support"
171 depends on ARM_S3C24XX_CPUFREQ && (CPU_S3C2440 || CPU_S3C2442)
172 select S3C2410_CPUFREQ_UTILS
175 CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs.
177 config ARM_S3C64XX_CPUFREQ
178 bool "Samsung S3C64XX"
179 depends on CPU_S3C6410
182 This adds the CPUFreq driver for Samsung S3C6410 SoC.
186 config ARM_S5PV210_CPUFREQ
187 bool "Samsung S5PV210 and S5PC110"
188 depends on CPU_S5PV210
191 This adds the CPUFreq driver for Samsung S5PV210 and
196 config ARM_SA1100_CPUFREQ
199 config ARM_SA1110_CPUFREQ
202 config ARM_SCPI_CPUFREQ
203 tristate "SCPI based CPUfreq driver"
204 depends on ARM_BIG_LITTLE_CPUFREQ && ARM_SCPI_PROTOCOL
206 This adds the CPUfreq driver support for ARM big.LITTLE platforms
207 using SCPI protocol for CPU power management.
209 This driver uses SCPI Message Protocol driver to interact with the
210 firmware providing the CPU DVFS functionality.
212 config ARM_SPEAR_CPUFREQ
213 bool "SPEAr CPUFreq support"
214 depends on PLAT_SPEAR
217 This adds the CPUFreq driver support for SPEAr SOCs.
219 config ARM_TEGRA20_CPUFREQ
220 bool "Tegra20 CPUFreq support"
221 depends on ARCH_TEGRA
224 This adds the CPUFreq driver support for Tegra20 SOCs.
226 config ARM_TEGRA124_CPUFREQ
227 tristate "Tegra124 CPUFreq support"
228 depends on ARCH_TEGRA && CPUFREQ_DT
231 This adds the CPUFreq driver support for Tegra124 SOCs.
233 config ARM_PXA2xx_CPUFREQ
234 tristate "Intel PXA2xx CPUfreq driver"
235 depends on PXA27x || PXA25x
237 This add the CPUFreq driver support for Intel PXA2xx SOCs.
241 config ACPI_CPPC_CPUFREQ
242 tristate "CPUFreq driver based on the ACPI CPPC spec"
247 This adds a CPUFreq driver which uses CPPC methods
248 as described in the ACPIv5.1 spec. CPPC stands for
249 Collaborative Processor Performance Controls. It
250 is based on an abstract continuous scale of CPU
251 performance values which allows the remote power
252 processor to flexibly optimize for power and
253 performance. CPPC relies on power management firmware
254 support for its operation.