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.