LXR linux/drivers/cpufreq/Kconfig.arm

   1#
   2# ARM CPU Frequency scaling drivers
   3#
   4
   5# big LITTLE core layer and glue drivers
   6config 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
  15config 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
  26config 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
  36config 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
  43config 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
  50config 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
  64config 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
  74config ARM_DB8500_CPUFREQ
  75        tristate "ST-Ericsson DB8500 cpufreq" if COMPILE_TEST && !ARCH_U8500
  76        default ARCH_U8500
  77        depends on HAS_IOMEM
  78        depends on !CPU_THERMAL || THERMAL
  79        help
  80          This adds the CPUFreq driver for ST-Ericsson Ux500 (DB8500) SoC
  81          series.
  82
  83config ARM_IMX6Q_CPUFREQ
  84        tristate "Freescale i.MX6 cpufreq support"
  85        depends on ARCH_MXC
  86        depends on REGULATOR_ANATOP
  87        select PM_OPP
  88        help
  89          This adds cpufreq driver support for Freescale i.MX6 series SoCs.
  90
  91          If in doubt, say N.
  92
  93config ARM_KIRKWOOD_CPUFREQ
  94        def_bool MACH_KIRKWOOD
  95        help
  96          This adds the CPUFreq driver for Marvell Kirkwood
  97          SoCs.
  98
  99config ARM_MT8173_CPUFREQ
 100        tristate "Mediatek MT8173 CPUFreq support"
 101        depends on ARCH_MEDIATEK && REGULATOR
 102        depends on ARM64 || (ARM_CPU_TOPOLOGY && COMPILE_TEST)
 103        depends on !CPU_THERMAL || THERMAL
 104        select PM_OPP
 105        help
 106          This adds the CPUFreq driver support for Mediatek MT8173 SoC.
 107
 108config ARM_OMAP2PLUS_CPUFREQ
 109        bool "TI OMAP2+"
 110        depends on ARCH_OMAP2PLUS
 111        default ARCH_OMAP2PLUS
 112
 113config ARM_S3C_CPUFREQ
 114        bool
 115        help
 116          Internal configuration node for common cpufreq on Samsung SoC
 117
 118config ARM_S3C24XX_CPUFREQ
 119        bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
 120        depends on ARCH_S3C24XX
 121        select ARM_S3C_CPUFREQ
 122        help
 123          This enables the CPUfreq driver for the Samsung S3C24XX family
 124          of CPUs.
 125
 126          For details, take a look at <file:Documentation/cpu-freq>.
 127
 128          If in doubt, say N.
 129
 130config ARM_S3C24XX_CPUFREQ_DEBUG
 131        bool "Debug CPUfreq Samsung driver core"
 132        depends on ARM_S3C24XX_CPUFREQ
 133        help
 134          Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
 135
 136config ARM_S3C24XX_CPUFREQ_IODEBUG
 137        bool "Debug CPUfreq Samsung driver IO timing"
 138        depends on ARM_S3C24XX_CPUFREQ
 139        help
 140          Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
 141
 142config ARM_S3C24XX_CPUFREQ_DEBUGFS
 143        bool "Export debugfs for CPUFreq"
 144        depends on ARM_S3C24XX_CPUFREQ && DEBUG_FS
 145        help
 146          Export status information via debugfs.
 147
 148config ARM_S3C2410_CPUFREQ
 149        bool
 150        depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2410
 151        select S3C2410_CPUFREQ_UTILS
 152        help
 153          CPU Frequency scaling support for S3C2410
 154
 155config ARM_S3C2412_CPUFREQ
 156        bool
 157        depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2412
 158        default y
 159        select S3C2412_IOTIMING
 160        help
 161          CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs.
 162
 163config ARM_S3C2416_CPUFREQ
 164        bool "S3C2416 CPU Frequency scaling support"
 165        depends on CPU_S3C2416
 166        help
 167          This adds the CPUFreq driver for the Samsung S3C2416 and
 168          S3C2450 SoC. The S3C2416 supports changing the rate of the
 169          armdiv clock source and also entering a so called dynamic
 170          voltage scaling mode in which it is possible to reduce the
 171          core voltage of the CPU.
 172
 173          If in doubt, say N.
 174
 175config ARM_S3C2416_CPUFREQ_VCORESCALE
 176        bool "Allow voltage scaling for S3C2416 arm core"
 177        depends on ARM_S3C2416_CPUFREQ && REGULATOR
 178        help
 179          Enable CPU voltage scaling when entering the dvs mode.
 180          It uses information gathered through existing hardware and
 181          tests but not documented in any datasheet.
 182
 183          If in doubt, say N.
 184
 185config ARM_S3C2440_CPUFREQ
 186        bool "S3C2440/S3C2442 CPU Frequency scaling support"
 187        depends on ARM_S3C24XX_CPUFREQ && (CPU_S3C2440 || CPU_S3C2442)
 188        select S3C2410_CPUFREQ_UTILS
 189        default y
 190        help
 191          CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs.
 192
 193config ARM_S3C64XX_CPUFREQ
 194        bool "Samsung S3C64XX"
 195        depends on CPU_S3C6410
 196        default y
 197        help
 198          This adds the CPUFreq driver for Samsung S3C6410 SoC.
 199
 200          If in doubt, say N.
 201
 202config ARM_S5PV210_CPUFREQ
 203        bool "Samsung S5PV210 and S5PC110"
 204        depends on CPU_S5PV210
 205        default y
 206        help
 207          This adds the CPUFreq driver for Samsung S5PV210 and
 208          S5PC110 SoCs.
 209
 210          If in doubt, say N.
 211
 212config ARM_SA1100_CPUFREQ
 213        bool
 214
 215config ARM_SA1110_CPUFREQ
 216        bool
 217
 218config ARM_SCPI_CPUFREQ
 219        tristate "SCPI based CPUfreq driver"
 220        depends on ARM_BIG_LITTLE_CPUFREQ && ARM_SCPI_PROTOCOL && COMMON_CLK_SCPI
 221        help
 222          This adds the CPUfreq driver support for ARM big.LITTLE platforms
 223          using SCPI protocol for CPU power management.
 224
 225          This driver uses SCPI Message Protocol driver to interact with the
 226          firmware providing the CPU DVFS functionality.
 227
 228config ARM_SPEAR_CPUFREQ
 229        bool "SPEAr CPUFreq support"
 230        depends on PLAT_SPEAR
 231        default y
 232        help
 233          This adds the CPUFreq driver support for SPEAr SOCs.
 234
 235config ARM_STI_CPUFREQ
 236        tristate "STi CPUFreq support"
 237        depends on SOC_STIH407
 238        help
 239          This driver uses the generic OPP framework to match the running
 240          platform with a predefined set of suitable values.  If not provided
 241          we will fall-back so safe-values contained in Device Tree.  Enable
 242          this config option if you wish to add CPUFreq support for STi based
 243          SoCs.
 244
 245config ARM_TEGRA20_CPUFREQ
 246        bool "Tegra20 CPUFreq support"
 247        depends on ARCH_TEGRA
 248        default y
 249        help
 250          This adds the CPUFreq driver support for Tegra20 SOCs.
 251
 252config ARM_TEGRA124_CPUFREQ
 253        tristate "Tegra124 CPUFreq support"
 254        depends on ARCH_TEGRA && CPUFREQ_DT && REGULATOR
 255        default y
 256        help
 257          This adds the CPUFreq driver support for Tegra124 SOCs.
 258
 259config ARM_TEGRA186_CPUFREQ
 260        tristate "Tegra186 CPUFreq support"
 261        depends on ARCH_TEGRA && TEGRA_BPMP
 262        help
 263          This adds the CPUFreq driver support for Tegra186 SOCs.
 264
 265config ARM_TI_CPUFREQ
 266        bool "Texas Instruments CPUFreq support"
 267        depends on ARCH_OMAP2PLUS
 268        help
 269          This driver enables valid OPPs on the running platform based on
 270          values contained within the SoC in use. Enable this in order to
 271          use the cpufreq-dt driver on all Texas Instruments platforms that
 272          provide dt based operating-points-v2 tables with opp-supported-hw
 273          data provided. Required for cpufreq support on AM335x, AM437x,
 274          DRA7x, and AM57x platforms.
 275
 276config ARM_PXA2xx_CPUFREQ
 277        tristate "Intel PXA2xx CPUfreq driver"
 278        depends on PXA27x || PXA25x
 279        help
 280          This add the CPUFreq driver support for Intel PXA2xx SOCs.
 281
 282          If in doubt, say N.
 283
 284config ACPI_CPPC_CPUFREQ
 285        tristate "CPUFreq driver based on the ACPI CPPC spec"
 286        depends on ACPI_PROCESSOR
 287        select ACPI_CPPC_LIB
 288        default n
 289        help
 290          This adds a CPUFreq driver which uses CPPC methods
 291          as described in the ACPIv5.1 spec. CPPC stands for
 292          Collaborative Processor Performance Controls. It
 293          is based on an abstract continuous scale of CPU
 294          performance values which allows the remote power
 295          processor to flexibly optimize for power and
 296          performance. CPPC relies on power management firmware
 297          support for its operation.
 298
 299          If in doubt, say N.
 300