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Linux/drivers/cpufreq/Kconfig.arm

  1 #
  2 # ARM CPU Frequency scaling drivers
  3 #
  4 
  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
 11         select PM_OPP
 12         help
 13           This enables the Generic CPUfreq driver for ARM big.LITTLE platforms.
 14 
 15 config ARM_BRCMSTB_AVS_CPUFREQ
 16         tristate "Broadcom STB AVS CPUfreq driver"
 17         depends on ARCH_BRCMSTB || COMPILE_TEST
 18         default y
 19         help
 20           Some Broadcom STB SoCs use a co-processor running proprietary firmware
 21           ("AVS") to handle voltage and frequency scaling. This driver provides
 22           a standard CPUfreq interface to to the firmware.
 23 
 24           Say Y, if you have a Broadcom SoC with AVS support for DFS or DVFS.
 25 
 26 config ARM_BRCMSTB_AVS_CPUFREQ_DEBUG
 27         bool "Broadcom STB AVS CPUfreq driver sysfs debug capability"
 28         depends on ARM_BRCMSTB_AVS_CPUFREQ
 29         help
 30           Enabling this option turns on debug support via sysfs under
 31           /sys/kernel/debug/brcmstb-avs-cpufreq. It is possible to read all and
 32           write some AVS mailbox registers through sysfs entries.
 33 
 34           If in doubt, say N.
 35 
 36 config ARM_DT_BL_CPUFREQ
 37         tristate "Generic probing via DT for ARM big LITTLE CPUfreq driver"
 38         depends on ARM_BIG_LITTLE_CPUFREQ && OF
 39         help
 40           This enables probing via DT for Generic CPUfreq driver for ARM
 41           big.LITTLE platform. This gets frequency tables from DT.
 42 
 43 config ARM_VEXPRESS_SPC_CPUFREQ
 44         tristate "Versatile Express SPC based CPUfreq driver"
 45         depends on ARM_BIG_LITTLE_CPUFREQ && ARCH_VEXPRESS_SPC
 46         help
 47           This add the CPUfreq driver support for Versatile Express
 48           big.LITTLE platforms using SPC for power management.
 49 
 50 config ARM_EXYNOS5440_CPUFREQ
 51         tristate "SAMSUNG EXYNOS5440"
 52         depends on SOC_EXYNOS5440
 53         depends on HAVE_CLK && OF
 54         select PM_OPP
 55         default y
 56         help
 57           This adds the CPUFreq driver for Samsung EXYNOS5440
 58           SoC. The nature of exynos5440 clock controller is
 59           different than previous exynos controllers so not using
 60           the common exynos framework.
 61 
 62           If in doubt, say N.
 63 
 64 config ARM_HIGHBANK_CPUFREQ
 65         tristate "Calxeda Highbank-based"
 66         depends on ARCH_HIGHBANK && CPUFREQ_DT && REGULATOR
 67         default m
 68         help
 69           This adds the CPUFreq driver for Calxeda Highbank SoC
 70           based boards.
 71 
 72           If in doubt, say N.
 73 
 74 config ARM_IMX6Q_CPUFREQ
 75         tristate "Freescale i.MX6 cpufreq support"
 76         depends on ARCH_MXC
 77         depends on REGULATOR_ANATOP
 78         select PM_OPP
 79         help
 80           This adds cpufreq driver support for Freescale i.MX6 series SoCs.
 81 
 82           If in doubt, say N.
 83 
 84 config ARM_KIRKWOOD_CPUFREQ
 85         def_bool MACH_KIRKWOOD
 86         help
 87           This adds the CPUFreq driver for Marvell Kirkwood
 88           SoCs.
 89 
 90 config ARM_MT8173_CPUFREQ
 91         tristate "Mediatek MT8173 CPUFreq support"
 92         depends on ARCH_MEDIATEK && REGULATOR
 93         depends on ARM64 || (ARM_CPU_TOPOLOGY && COMPILE_TEST)
 94         depends on !CPU_THERMAL || THERMAL
 95         select PM_OPP
 96         help
 97           This adds the CPUFreq driver support for Mediatek MT8173 SoC.
 98 
 99 config ARM_OMAP2PLUS_CPUFREQ
100         bool "TI OMAP2+"
101         depends on ARCH_OMAP2PLUS
102         default ARCH_OMAP2PLUS
103 
104 config ARM_S3C_CPUFREQ
105         bool
106         help
107           Internal configuration node for common cpufreq on Samsung SoC
108 
109 config ARM_S3C24XX_CPUFREQ
110         bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
111         depends on ARCH_S3C24XX
112         select ARM_S3C_CPUFREQ
113         help
114           This enables the CPUfreq driver for the Samsung S3C24XX family
115           of CPUs.
116 
117           For details, take a look at <file:Documentation/cpu-freq>.
118 
119           If in doubt, say N.
120 
121 config ARM_S3C24XX_CPUFREQ_DEBUG
122         bool "Debug CPUfreq Samsung driver core"
123         depends on ARM_S3C24XX_CPUFREQ
124         help
125           Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
126 
127 config ARM_S3C24XX_CPUFREQ_IODEBUG
128         bool "Debug CPUfreq Samsung driver IO timing"
129         depends on ARM_S3C24XX_CPUFREQ
130         help
131           Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
132 
133 config ARM_S3C24XX_CPUFREQ_DEBUGFS
134         bool "Export debugfs for CPUFreq"
135         depends on ARM_S3C24XX_CPUFREQ && DEBUG_FS
136         help
137           Export status information via debugfs.
138 
139 config ARM_S3C2410_CPUFREQ
140         bool
141         depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2410
142         select S3C2410_CPUFREQ_UTILS
143         help
144           CPU Frequency scaling support for S3C2410
145 
146 config ARM_S3C2412_CPUFREQ
147         bool
148         depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2412
149         default y
150         select S3C2412_IOTIMING
151         help
152           CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs.
153 
154 config ARM_S3C2416_CPUFREQ
155         bool "S3C2416 CPU Frequency scaling support"
156         depends on CPU_S3C2416
157         help
158           This adds the CPUFreq driver for the Samsung S3C2416 and
159           S3C2450 SoC. The S3C2416 supports changing the rate of the
160           armdiv clock source and also entering a so called dynamic
161           voltage scaling mode in which it is possible to reduce the
162           core voltage of the CPU.
163 
164           If in doubt, say N.
165 
166 config ARM_S3C2416_CPUFREQ_VCORESCALE
167         bool "Allow voltage scaling for S3C2416 arm core"
168         depends on ARM_S3C2416_CPUFREQ && REGULATOR
169         help
170           Enable CPU voltage scaling when entering the dvs mode.
171           It uses information gathered through existing hardware and
172           tests but not documented in any datasheet.
173 
174           If in doubt, say N.
175 
176 config ARM_S3C2440_CPUFREQ
177         bool "S3C2440/S3C2442 CPU Frequency scaling support"
178         depends on ARM_S3C24XX_CPUFREQ && (CPU_S3C2440 || CPU_S3C2442)
179         select S3C2410_CPUFREQ_UTILS
180         default y
181         help
182           CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs.
183 
184 config ARM_S3C64XX_CPUFREQ
185         bool "Samsung S3C64XX"
186         depends on CPU_S3C6410
187         default y
188         help
189           This adds the CPUFreq driver for Samsung S3C6410 SoC.
190 
191           If in doubt, say N.
192 
193 config ARM_S5PV210_CPUFREQ
194         bool "Samsung S5PV210 and S5PC110"
195         depends on CPU_S5PV210
196         default y
197         help
198           This adds the CPUFreq driver for Samsung S5PV210 and
199           S5PC110 SoCs.
200 
201           If in doubt, say N.
202 
203 config ARM_SA1100_CPUFREQ
204         bool
205 
206 config ARM_SA1110_CPUFREQ
207         bool
208 
209 config ARM_SCPI_CPUFREQ
210         tristate "SCPI based CPUfreq driver"
211         depends on ARM_BIG_LITTLE_CPUFREQ && ARM_SCPI_PROTOCOL && COMMON_CLK_SCPI
212         help
213           This adds the CPUfreq driver support for ARM big.LITTLE platforms
214           using SCPI protocol for CPU power management.
215 
216           This driver uses SCPI Message Protocol driver to interact with the
217           firmware providing the CPU DVFS functionality.
218 
219 config ARM_SPEAR_CPUFREQ
220         bool "SPEAr CPUFreq support"
221         depends on PLAT_SPEAR
222         default y
223         help
224           This adds the CPUFreq driver support for SPEAr SOCs.
225 
226 config ARM_STI_CPUFREQ
227         tristate "STi CPUFreq support"
228         depends on SOC_STIH407
229         help
230           This driver uses the generic OPP framework to match the running
231           platform with a predefined set of suitable values.  If not provided
232           we will fall-back so safe-values contained in Device Tree.  Enable
233           this config option if you wish to add CPUFreq support for STi based
234           SoCs.
235 
236 config ARM_TEGRA20_CPUFREQ
237         bool "Tegra20 CPUFreq support"
238         depends on ARCH_TEGRA
239         default y
240         help
241           This adds the CPUFreq driver support for Tegra20 SOCs.
242 
243 config ARM_TEGRA124_CPUFREQ
244         tristate "Tegra124 CPUFreq support"
245         depends on ARCH_TEGRA && CPUFREQ_DT && REGULATOR
246         default y
247         help
248           This adds the CPUFreq driver support for Tegra124 SOCs.
249 
250 config ARM_PXA2xx_CPUFREQ
251         tristate "Intel PXA2xx CPUfreq driver"
252         depends on PXA27x || PXA25x
253         help
254           This add the CPUFreq driver support for Intel PXA2xx SOCs.
255 
256           If in doubt, say N.
257 
258 config ACPI_CPPC_CPUFREQ
259         tristate "CPUFreq driver based on the ACPI CPPC spec"
260         depends on ACPI
261         select ACPI_CPPC_LIB
262         default n
263         help
264           This adds a CPUFreq driver which uses CPPC methods
265           as described in the ACPIv5.1 spec. CPPC stands for
266           Collaborative Processor Performance Controls. It
267           is based on an abstract continuous scale of CPU
268           performance values which allows the remote power
269           processor to flexibly optimize for power and
270           performance. CPPC relies on power management firmware
271           support for its operation.
272 
273           If in doubt, say N.

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