1# 2# ARM CPU Frequency scaling drivers 3# 4 5config ACPI_CPPC_CPUFREQ 6 tristate "CPUFreq driver based on the ACPI CPPC spec" 7 depends on ACPI_PROCESSOR 8 select ACPI_CPPC_LIB 9 help 10 This adds a CPUFreq driver which uses CPPC methods 11 as described in the ACPIv5.1 spec. CPPC stands for 12 Collaborative Processor Performance Controls. It 13 is based on an abstract continuous scale of CPU 14 performance values which allows the remote power 15 processor to flexibly optimize for power and 16 performance. CPPC relies on power management firmware 17 support for its operation. 18 19 If in doubt, say N. 20 21config ARM_ARMADA_37XX_CPUFREQ 22 tristate "Armada 37xx CPUFreq support" 23 depends on ARCH_MVEBU && CPUFREQ_DT 24 help 25 This adds the CPUFreq driver support for Marvell Armada 37xx SoCs. 26 The Armada 37xx PMU supports 4 frequency and VDD levels. 27 28# big LITTLE core layer and glue drivers 29config ARM_BIG_LITTLE_CPUFREQ 30 tristate "Generic ARM big LITTLE CPUfreq driver" 31 depends on (ARM_CPU_TOPOLOGY || ARM64) && HAVE_CLK 32 # if CPU_THERMAL is on and THERMAL=m, ARM_BIT_LITTLE_CPUFREQ cannot be =y 33 depends on !CPU_THERMAL || THERMAL 34 select PM_OPP 35 help 36 This enables the Generic CPUfreq driver for ARM big.LITTLE platforms. 37 38config ARM_DT_BL_CPUFREQ 39 tristate "Generic probing via DT for ARM big LITTLE CPUfreq driver" 40 depends on ARM_BIG_LITTLE_CPUFREQ && OF 41 help 42 This enables probing via DT for Generic CPUfreq driver for ARM 43 big.LITTLE platform. This gets frequency tables from DT. 44 45config ARM_SCPI_CPUFREQ 46 tristate "SCPI based CPUfreq driver" 47 depends on ARM_SCPI_PROTOCOL && COMMON_CLK_SCPI 48 depends on !CPU_THERMAL || THERMAL 49 help 50 This adds the CPUfreq driver support for ARM platforms using SCPI 51 protocol for CPU power management. 52 53 This driver uses SCPI Message Protocol driver to interact with the 54 firmware providing the CPU DVFS functionality. 55 56config ARM_VEXPRESS_SPC_CPUFREQ 57 tristate "Versatile Express SPC based CPUfreq driver" 58 depends on ARM_BIG_LITTLE_CPUFREQ && ARCH_VEXPRESS_SPC 59 help 60 This add the CPUfreq driver support for Versatile Express 61 big.LITTLE platforms using SPC for power management. 62 63config ARM_BRCMSTB_AVS_CPUFREQ 64 tristate "Broadcom STB AVS CPUfreq driver" 65 depends on ARCH_BRCMSTB || COMPILE_TEST 66 default y 67 help 68 Some Broadcom STB SoCs use a co-processor running proprietary firmware 69 ("AVS") to handle voltage and frequency scaling. This driver provides 70 a standard CPUfreq interface to to the firmware. 71 72 Say Y, if you have a Broadcom SoC with AVS support for DFS or DVFS. 73 74config ARM_EXYNOS5440_CPUFREQ 75 tristate "SAMSUNG EXYNOS5440" 76 depends on SOC_EXYNOS5440 77 depends on HAVE_CLK && OF 78 select PM_OPP 79 default y 80 help 81 This adds the CPUFreq driver for Samsung EXYNOS5440 82 SoC. The nature of exynos5440 clock controller is 83 different than previous exynos controllers so not using 84 the common exynos framework. 85 86 If in doubt, say N. 87 88config ARM_HIGHBANK_CPUFREQ 89 tristate "Calxeda Highbank-based" 90 depends on ARCH_HIGHBANK && CPUFREQ_DT && REGULATOR 91 default m 92 help 93 This adds the CPUFreq driver for Calxeda Highbank SoC 94 based boards. 95 96 If in doubt, say N. 97 98config ARM_IMX6Q_CPUFREQ 99 tristate "Freescale i.MX6 cpufreq support" 100 depends on ARCH_MXC 101 depends on REGULATOR_ANATOP 102 select PM_OPP 103 help 104 This adds cpufreq driver support for Freescale i.MX6 series SoCs. 105 106 If in doubt, say N. 107 108config ARM_KIRKWOOD_CPUFREQ 109 def_bool MACH_KIRKWOOD 110 help 111 This adds the CPUFreq driver for Marvell Kirkwood 112 SoCs. 113 114config ARM_MEDIATEK_CPUFREQ 115 tristate "CPU Frequency scaling support for MediaTek SoCs" 116 depends on ARCH_MEDIATEK && REGULATOR 117 depends on !CPU_THERMAL || THERMAL 118 select PM_OPP 119 help 120 This adds the CPUFreq driver support for MediaTek SoCs. 121 122config ARM_OMAP2PLUS_CPUFREQ 123 bool "TI OMAP2+" 124 depends on ARCH_OMAP2PLUS 125 default ARCH_OMAP2PLUS 126 127config ARM_S3C_CPUFREQ 128 bool 129 help 130 Internal configuration node for common cpufreq on Samsung SoC 131 132config ARM_S3C24XX_CPUFREQ 133 bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)" 134 depends on ARCH_S3C24XX 135 select ARM_S3C_CPUFREQ 136 help 137 This enables the CPUfreq driver for the Samsung S3C24XX family 138 of CPUs. 139 140 For details, take a look at <file:Documentation/cpu-freq>. 141 142 If in doubt, say N. 143 144config ARM_S3C24XX_CPUFREQ_DEBUG 145 bool "Debug CPUfreq Samsung driver core" 146 depends on ARM_S3C24XX_CPUFREQ 147 help 148 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core 149 150config ARM_S3C24XX_CPUFREQ_IODEBUG 151 bool "Debug CPUfreq Samsung driver IO timing" 152 depends on ARM_S3C24XX_CPUFREQ 153 help 154 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core 155 156config ARM_S3C24XX_CPUFREQ_DEBUGFS 157 bool "Export debugfs for CPUFreq" 158 depends on ARM_S3C24XX_CPUFREQ && DEBUG_FS 159 help 160 Export status information via debugfs. 161 162config ARM_S3C2410_CPUFREQ 163 bool 164 depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2410 165 select S3C2410_CPUFREQ_UTILS 166 help 167 CPU Frequency scaling support for S3C2410 168 169config ARM_S3C2412_CPUFREQ 170 bool 171 depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2412 172 default y 173 select S3C2412_IOTIMING 174 help 175 CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs. 176 177config ARM_S3C2416_CPUFREQ 178 bool "S3C2416 CPU Frequency scaling support" 179 depends on CPU_S3C2416 180 help 181 This adds the CPUFreq driver for the Samsung S3C2416 and 182 S3C2450 SoC. The S3C2416 supports changing the rate of the 183 armdiv clock source and also entering a so called dynamic 184 voltage scaling mode in which it is possible to reduce the 185 core voltage of the CPU. 186 187 If in doubt, say N. 188 189config ARM_S3C2416_CPUFREQ_VCORESCALE 190 bool "Allow voltage scaling for S3C2416 arm core" 191 depends on ARM_S3C2416_CPUFREQ && REGULATOR 192 help 193 Enable CPU voltage scaling when entering the dvs mode. 194 It uses information gathered through existing hardware and 195 tests but not documented in any datasheet. 196 197 If in doubt, say N. 198 199config ARM_S3C2440_CPUFREQ 200 bool "S3C2440/S3C2442 CPU Frequency scaling support" 201 depends on ARM_S3C24XX_CPUFREQ && (CPU_S3C2440 || CPU_S3C2442) 202 select S3C2410_CPUFREQ_UTILS 203 default y 204 help 205 CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs. 206 207config ARM_S3C64XX_CPUFREQ 208 bool "Samsung S3C64XX" 209 depends on CPU_S3C6410 210 default y 211 help 212 This adds the CPUFreq driver for Samsung S3C6410 SoC. 213 214 If in doubt, say N. 215 216config ARM_S5PV210_CPUFREQ 217 bool "Samsung S5PV210 and S5PC110" 218 depends on CPU_S5PV210 219 default y 220 help 221 This adds the CPUFreq driver for Samsung S5PV210 and 222 S5PC110 SoCs. 223 224 If in doubt, say N. 225 226config ARM_SA1100_CPUFREQ 227 bool 228 229config ARM_SA1110_CPUFREQ 230 bool 231 232config ARM_SCMI_CPUFREQ 233 tristate "SCMI based CPUfreq driver" 234 depends on ARM_SCMI_PROTOCOL || COMPILE_TEST 235 depends on !CPU_THERMAL || THERMAL 236 select PM_OPP 237 help 238 This adds the CPUfreq driver support for ARM platforms using SCMI 239 protocol for CPU power management. 240 241 This driver uses SCMI Message Protocol driver to interact with the 242 firmware providing the CPU DVFS functionality. 243 244config ARM_SPEAR_CPUFREQ 245 bool "SPEAr CPUFreq support" 246 depends on PLAT_SPEAR 247 default y 248 help 249 This adds the CPUFreq driver support for SPEAr SOCs. 250 251config ARM_STI_CPUFREQ 252 tristate "STi CPUFreq support" 253 depends on SOC_STIH407 254 help 255 This driver uses the generic OPP framework to match the running 256 platform with a predefined set of suitable values. If not provided 257 we will fall-back so safe-values contained in Device Tree. Enable 258 this config option if you wish to add CPUFreq support for STi based 259 SoCs. 260 261config ARM_TANGO_CPUFREQ 262 bool 263 depends on CPUFREQ_DT && ARCH_TANGO 264 default y 265 266config ARM_TEGRA20_CPUFREQ 267 bool "Tegra20 CPUFreq support" 268 depends on ARCH_TEGRA 269 default y 270 help 271 This adds the CPUFreq driver support for Tegra20 SOCs. 272 273config ARM_TEGRA124_CPUFREQ 274 tristate "Tegra124 CPUFreq support" 275 depends on ARCH_TEGRA && CPUFREQ_DT && REGULATOR 276 default y 277 help 278 This adds the CPUFreq driver support for Tegra124 SOCs. 279 280config ARM_TEGRA186_CPUFREQ 281 tristate "Tegra186 CPUFreq support" 282 depends on ARCH_TEGRA && TEGRA_BPMP 283 help 284 This adds the CPUFreq driver support for Tegra186 SOCs. 285 286config ARM_TI_CPUFREQ 287 bool "Texas Instruments CPUFreq support" 288 depends on ARCH_OMAP2PLUS 289 help 290 This driver enables valid OPPs on the running platform based on 291 values contained within the SoC in use. Enable this in order to 292 use the cpufreq-dt driver on all Texas Instruments platforms that 293 provide dt based operating-points-v2 tables with opp-supported-hw 294 data provided. Required for cpufreq support on AM335x, AM437x, 295 DRA7x, and AM57x platforms. 296 297config ARM_PXA2xx_CPUFREQ 298 tristate "Intel PXA2xx CPUfreq driver" 299 depends on PXA27x || PXA25x 300 help 301 This add the CPUFreq driver support for Intel PXA2xx SOCs. 302 303 If in doubt, say N. 304