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 ARM64 ||
(ARM_CPU_TOPOLOGY
&& COMPILE_TEST
)
88 depends on
!CPU_THERMAL || THERMAL
=y
91 This adds the CPUFreq driver support for Mediatek MT8173 SoC.
93 config ARM_OMAP2PLUS_CPUFREQ
95 depends on ARCH_OMAP2PLUS
96 default ARCH_OMAP2PLUS
98 config ARM_S3C_CPUFREQ
101 Internal configuration node for common cpufreq on Samsung SoC
103 config ARM_S3C24XX_CPUFREQ
104 bool
"CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
105 depends on ARCH_S3C24XX
106 select ARM_S3C_CPUFREQ
108 This enables the CPUfreq driver for the Samsung S3C24XX family
111 For details
, take a look at
<file
:Documentation
/cpu
-freq
>.
115 config ARM_S3C24XX_CPUFREQ_DEBUG
116 bool
"Debug CPUfreq Samsung driver core"
117 depends on ARM_S3C24XX_CPUFREQ
119 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
121 config ARM_S3C24XX_CPUFREQ_IODEBUG
122 bool
"Debug CPUfreq Samsung driver IO timing"
123 depends on ARM_S3C24XX_CPUFREQ
125 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
127 config ARM_S3C24XX_CPUFREQ_DEBUGFS
128 bool
"Export debugfs for CPUFreq"
129 depends on ARM_S3C24XX_CPUFREQ
&& DEBUG_FS
131 Export status information via debugfs.
133 config ARM_S3C2410_CPUFREQ
135 depends on ARM_S3C24XX_CPUFREQ
&& CPU_S3C2410
136 select S3C2410_CPUFREQ_UTILS
138 CPU Frequency scaling support for S3C2410
140 config ARM_S3C2412_CPUFREQ
142 depends on ARM_S3C24XX_CPUFREQ
&& CPU_S3C2412
144 select S3C2412_IOTIMING
146 CPU Frequency scaling support for S3C2412
and S3C2413 SoC CPUs.
148 config ARM_S3C2416_CPUFREQ
149 bool
"S3C2416 CPU Frequency scaling support"
150 depends on CPU_S3C2416
152 This adds the CPUFreq driver for the Samsung S3C2416
and
153 S3C2450 SoC. The S3C2416 supports changing the rate of the
154 armdiv clock source
and also entering a so called dynamic
155 voltage scaling mode in which it is possible to reduce the
156 core voltage of the CPU.
160 config ARM_S3C2416_CPUFREQ_VCORESCALE
161 bool
"Allow voltage scaling for S3C2416 arm core"
162 depends on ARM_S3C2416_CPUFREQ
&& REGULATOR
164 Enable CPU voltage scaling when entering the dvs mode.
165 It uses information gathered through existing hardware
and
166 tests but not documented in any datasheet.
170 config ARM_S3C2440_CPUFREQ
171 bool
"S3C2440/S3C2442 CPU Frequency scaling support"
172 depends on ARM_S3C24XX_CPUFREQ
&& (CPU_S3C2440 || CPU_S3C2442
)
173 select S3C2410_CPUFREQ_UTILS
176 CPU Frequency scaling support for S3C2440
and S3C2442 SoC CPUs.
178 config ARM_S3C64XX_CPUFREQ
179 bool
"Samsung S3C64XX"
180 depends on CPU_S3C6410
183 This adds the CPUFreq driver for Samsung S3C6410 SoC.
187 config ARM_S5PV210_CPUFREQ
188 bool
"Samsung S5PV210 and S5PC110"
189 depends on CPU_S5PV210
192 This adds the CPUFreq driver for Samsung S5PV210
and
197 config ARM_SA1100_CPUFREQ
200 config ARM_SA1110_CPUFREQ
203 config ARM_SCPI_CPUFREQ
204 tristate
"SCPI based CPUfreq driver"
205 depends on ARM_BIG_LITTLE_CPUFREQ
&& ARM_SCPI_PROTOCOL
&& COMMON_CLK_SCPI
207 This adds the CPUfreq driver support for ARM big.LITTLE platforms
208 using SCPI protocol for CPU power management.
210 This driver uses SCPI Message Protocol driver to interact with the
211 firmware providing the CPU DVFS functionality.
213 config ARM_SPEAR_CPUFREQ
214 bool
"SPEAr CPUFreq support"
215 depends on PLAT_SPEAR
218 This adds the CPUFreq driver support for SPEAr SOCs.
220 config ARM_TEGRA20_CPUFREQ
221 bool
"Tegra20 CPUFreq support"
222 depends on ARCH_TEGRA
225 This adds the CPUFreq driver support for Tegra20 SOCs.
227 config ARM_TEGRA124_CPUFREQ
228 tristate
"Tegra124 CPUFreq support"
229 depends on ARCH_TEGRA
&& CPUFREQ_DT
&& REGULATOR
232 This adds the CPUFreq driver support for Tegra124 SOCs.
234 config ARM_PXA2xx_CPUFREQ
235 tristate
"Intel PXA2xx CPUfreq driver"
236 depends on PXA27x || PXA25x
238 This
add the CPUFreq driver support for Intel PXA2xx SOCs.
242 config ACPI_CPPC_CPUFREQ
243 tristate
"CPUFreq driver based on the ACPI CPPC spec"
244 depends on ACPI_PROCESSOR
248 This adds a CPUFreq driver which uses CPPC methods
249 as described in the ACPIv5.1 spec. CPPC stands for
250 Collaborative Processor Performance Controls. It
251 is based on an abstract continuous scale of CPU
252 performance values which allows the
remote power
253 processor to flexibly optimize for power
and
254 performance. CPPC relies on power management firmware
255 support for its operation.