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_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 84config ARM_KIRKWOOD_CPUFREQ 85 def_bool MACH_KIRKWOOD 86 help 87 This adds the CPUFreq driver for Marvell Kirkwood 88 SoCs. 89 90config 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 99config ARM_OMAP2PLUS_CPUFREQ 100 bool "TI OMAP2+" 101 depends on ARCH_OMAP2PLUS 102 default ARCH_OMAP2PLUS 103 104config ARM_S3C_CPUFREQ 105 bool 106 help 107 Internal configuration node for common cpufreq on Samsung SoC 108 109config 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 121config 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 127config 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 133config 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 139config 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 146config 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 154config 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 166config 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 176config 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 184config 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 193config 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 203config ARM_SA1100_CPUFREQ 204 bool 205 206config ARM_SA1110_CPUFREQ 207 bool 208 209config 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 219config 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 226config 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 236config 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 243config 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 250config 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 258config 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. 274