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
9 # if CPU_THERMAL is on and THERMAL=m, ARM_BIT_LITTLE_CPUFREQ cannot be =y
10 depends on !CPU_THERMAL || THERMAL
13 This enables the Generic CPUfreq driver for ARM big.LITTLE platforms.
15 config ARM_DT_BL_CPUFREQ
16 tristate "Generic probing via DT for ARM big LITTLE CPUfreq driver"
17 depends on ARM_BIG_LITTLE_CPUFREQ && OF
19 This enables probing via DT for Generic CPUfreq driver for ARM
20 big.LITTLE platform. This gets frequency tables from DT.
22 config ARM_VEXPRESS_SPC_CPUFREQ
23 tristate "Versatile Express SPC based CPUfreq driver"
24 depends on ARM_BIG_LITTLE_CPUFREQ && ARCH_VEXPRESS_SPC
26 This add the CPUfreq driver support for Versatile Express
27 big.LITTLE platforms using SPC for power management.
29 config ARM_EXYNOS5440_CPUFREQ
30 tristate "SAMSUNG EXYNOS5440"
31 depends on SOC_EXYNOS5440
32 depends on HAVE_CLK && OF
36 This adds the CPUFreq driver for Samsung EXYNOS5440
37 SoC. The nature of exynos5440 clock controller is
38 different than previous exynos controllers so not using
39 the common exynos framework.
43 config ARM_HIGHBANK_CPUFREQ
44 tristate "Calxeda Highbank-based"
45 depends on ARCH_HIGHBANK && CPUFREQ_DT && REGULATOR
48 This adds the CPUFreq driver for Calxeda Highbank SoC
53 config ARM_HISI_ACPU_CPUFREQ
54 tristate "Hisilicon ACPU CPUfreq driver"
55 depends on ARCH_HISI && CPUFREQ_DT
58 This enables the hisilicon ACPU CPUfreq driver.
62 config ARM_IMX6Q_CPUFREQ
63 tristate "Freescale i.MX6 cpufreq support"
65 depends on REGULATOR_ANATOP
68 This adds cpufreq driver support for Freescale i.MX6 series SoCs.
73 tristate "CPUfreq driver for ARM Integrator CPUs"
74 depends on ARCH_INTEGRATOR
77 This enables the CPUfreq driver for ARM Integrator CPUs.
80 config ARM_KIRKWOOD_CPUFREQ
81 def_bool MACH_KIRKWOOD
83 This adds the CPUFreq driver for Marvell Kirkwood
86 config ARM_MT8173_CPUFREQ
87 bool "Mediatek MT8173 CPUFreq support"
88 depends on ARCH_MEDIATEK && REGULATOR
89 depends on ARM64 || (ARM_CPU_TOPOLOGY && COMPILE_TEST)
90 depends on !CPU_THERMAL || THERMAL=y
93 This adds the CPUFreq driver support for Mediatek MT8173 SoC.
95 config ARM_OMAP2PLUS_CPUFREQ
97 depends on ARCH_OMAP2PLUS
98 default ARCH_OMAP2PLUS
100 config ARM_S3C_CPUFREQ
103 Internal configuration node for common cpufreq on Samsung SoC
105 config ARM_S3C24XX_CPUFREQ
106 bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
107 depends on ARCH_S3C24XX
108 select ARM_S3C_CPUFREQ
110 This enables the CPUfreq driver for the Samsung S3C24XX family
113 For details, take a look at <file:Documentation/cpu-freq>.
117 config ARM_S3C24XX_CPUFREQ_DEBUG
118 bool "Debug CPUfreq Samsung driver core"
119 depends on ARM_S3C24XX_CPUFREQ
121 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
123 config ARM_S3C24XX_CPUFREQ_IODEBUG
124 bool "Debug CPUfreq Samsung driver IO timing"
125 depends on ARM_S3C24XX_CPUFREQ
127 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
129 config ARM_S3C24XX_CPUFREQ_DEBUGFS
130 bool "Export debugfs for CPUFreq"
131 depends on ARM_S3C24XX_CPUFREQ && DEBUG_FS
133 Export status information via debugfs.
135 config ARM_S3C2410_CPUFREQ
137 depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2410
138 select S3C2410_CPUFREQ_UTILS
140 CPU Frequency scaling support for S3C2410
142 config ARM_S3C2412_CPUFREQ
144 depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2412
146 select S3C2412_IOTIMING
148 CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs.
150 config ARM_S3C2416_CPUFREQ
151 bool "S3C2416 CPU Frequency scaling support"
152 depends on CPU_S3C2416
154 This adds the CPUFreq driver for the Samsung S3C2416 and
155 S3C2450 SoC. The S3C2416 supports changing the rate of the
156 armdiv clock source and also entering a so called dynamic
157 voltage scaling mode in which it is possible to reduce the
158 core voltage of the CPU.
162 config ARM_S3C2416_CPUFREQ_VCORESCALE
163 bool "Allow voltage scaling for S3C2416 arm core"
164 depends on ARM_S3C2416_CPUFREQ && REGULATOR
166 Enable CPU voltage scaling when entering the dvs mode.
167 It uses information gathered through existing hardware and
168 tests but not documented in any datasheet.
172 config ARM_S3C2440_CPUFREQ
173 bool "S3C2440/S3C2442 CPU Frequency scaling support"
174 depends on ARM_S3C24XX_CPUFREQ && (CPU_S3C2440 || CPU_S3C2442)
175 select S3C2410_CPUFREQ_UTILS
178 CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs.
180 config ARM_S3C64XX_CPUFREQ
181 bool "Samsung S3C64XX"
182 depends on CPU_S3C6410
185 This adds the CPUFreq driver for Samsung S3C6410 SoC.
189 config ARM_S5PV210_CPUFREQ
190 bool "Samsung S5PV210 and S5PC110"
191 depends on CPU_S5PV210
194 This adds the CPUFreq driver for Samsung S5PV210 and
199 config ARM_SA1100_CPUFREQ
202 config ARM_SA1110_CPUFREQ
205 config ARM_SCPI_CPUFREQ
206 tristate "SCPI based CPUfreq driver"
207 depends on ARM_BIG_LITTLE_CPUFREQ && ARM_SCPI_PROTOCOL && COMMON_CLK_SCPI
209 This adds the CPUfreq driver support for ARM big.LITTLE platforms
210 using SCPI protocol for CPU power management.
212 This driver uses SCPI Message Protocol driver to interact with the
213 firmware providing the CPU DVFS functionality.
215 config ARM_SPEAR_CPUFREQ
216 bool "SPEAr CPUFreq support"
217 depends on PLAT_SPEAR
220 This adds the CPUFreq driver support for SPEAr SOCs.
222 config ARM_TEGRA20_CPUFREQ
223 bool "Tegra20 CPUFreq support"
224 depends on ARCH_TEGRA
227 This adds the CPUFreq driver support for Tegra20 SOCs.
229 config ARM_TEGRA124_CPUFREQ
230 tristate "Tegra124 CPUFreq support"
231 depends on ARCH_TEGRA && CPUFREQ_DT
234 This adds the CPUFreq driver support for Tegra124 SOCs.
236 config ARM_PXA2xx_CPUFREQ
237 tristate "Intel PXA2xx CPUfreq driver"
238 depends on PXA27x || PXA25x
240 This add the CPUFreq driver support for Intel PXA2xx SOCs.
244 config ACPI_CPPC_CPUFREQ
245 tristate "CPUFreq driver based on the ACPI CPPC spec"
250 This adds a CPUFreq driver which uses CPPC methods
251 as described in the ACPIv5.1 spec. CPPC stands for
252 Collaborative Processor Performance Controls. It
253 is based on an abstract continuous scale of CPU
254 performance values which allows the remote power
255 processor to flexibly optimize for power and
256 performance. CPPC relies on power management firmware
257 support for its operation.