1# SPDX-License-Identifier: GPL-2.0-only 2# 3# ARM CPU Frequency scaling drivers 4# 5 6config ACPI_CPPC_CPUFREQ 7 tristate "CPUFreq driver based on the ACPI CPPC spec" 8 depends on ACPI_PROCESSOR 9 select ACPI_CPPC_LIB 10 help 11 This adds a CPUFreq driver which uses CPPC methods 12 as described in the ACPIv5.1 spec. CPPC stands for 13 Collaborative Processor Performance Controls. It 14 is based on an abstract continuous scale of CPU 15 performance values which allows the remote power 16 processor to flexibly optimize for power and 17 performance. CPPC relies on power management firmware 18 support for its operation. 19 20 If in doubt, say N. 21 22config ARM_ALLWINNER_SUN50I_CPUFREQ_NVMEM 23 tristate "Allwinner nvmem based SUN50I CPUFreq driver" 24 depends on ARCH_SUNXI 25 depends on NVMEM_SUNXI_SID 26 select PM_OPP 27 help 28 This adds the nvmem based CPUFreq driver for Allwinner 29 h6 SoC. 30 31 To compile this driver as a module, choose M here: the 32 module will be called sun50i-cpufreq-nvmem. 33 34config ARM_ARMADA_37XX_CPUFREQ 35 tristate "Armada 37xx CPUFreq support" 36 depends on ARCH_MVEBU && CPUFREQ_DT 37 help 38 This adds the CPUFreq driver support for Marvell Armada 37xx SoCs. 39 The Armada 37xx PMU supports 4 frequency and VDD levels. 40 41config ARM_ARMADA_8K_CPUFREQ 42 tristate "Armada 8K CPUFreq driver" 43 depends on ARCH_MVEBU && CPUFREQ_DT 44 select ARMADA_AP_CPU_CLK 45 help 46 This enables the CPUFreq driver support for Marvell 47 Armada8k SOCs. 48 Armada8K device has the AP806 which supports scaling 49 to any full integer divider. 50 51 If in doubt, say N. 52 53config ARM_SCPI_CPUFREQ 54 tristate "SCPI based CPUfreq driver" 55 depends on ARM_SCPI_PROTOCOL && COMMON_CLK_SCPI 56 help 57 This adds the CPUfreq driver support for ARM platforms using SCPI 58 protocol for CPU power management. 59 60 This driver uses SCPI Message Protocol driver to interact with the 61 firmware providing the CPU DVFS functionality. 62 63config ARM_VEXPRESS_SPC_CPUFREQ 64 tristate "Versatile Express SPC based CPUfreq driver" 65 depends on ARM_CPU_TOPOLOGY && HAVE_CLK 66 depends on ARCH_VEXPRESS_SPC 67 select PM_OPP 68 help 69 This add the CPUfreq driver support for Versatile Express 70 big.LITTLE platforms using SPC for power management. 71 72config ARM_BRCMSTB_AVS_CPUFREQ 73 tristate "Broadcom STB AVS CPUfreq driver" 74 depends on ARCH_BRCMSTB || COMPILE_TEST 75 default y 76 help 77 Some Broadcom STB SoCs use a co-processor running proprietary firmware 78 ("AVS") to handle voltage and frequency scaling. This driver provides 79 a standard CPUfreq interface to to the firmware. 80 81 Say Y, if you have a Broadcom SoC with AVS support for DFS or DVFS. 82 83config ARM_HIGHBANK_CPUFREQ 84 tristate "Calxeda Highbank-based" 85 depends on ARCH_HIGHBANK && CPUFREQ_DT && REGULATOR 86 default m 87 help 88 This adds the CPUFreq driver for Calxeda Highbank SoC 89 based boards. 90 91 If in doubt, say N. 92 93config ARM_IMX6Q_CPUFREQ 94 tristate "Freescale i.MX6 cpufreq support" 95 depends on ARCH_MXC 96 depends on REGULATOR_ANATOP 97 depends on NVMEM_IMX_OCOTP || COMPILE_TEST 98 select PM_OPP 99 help 100 This adds cpufreq driver support for Freescale i.MX6 series SoCs. 101 102 If in doubt, say N. 103 104config ARM_IMX_CPUFREQ_DT 105 tristate "Freescale i.MX8M cpufreq support" 106 depends on ARCH_MXC && CPUFREQ_DT 107 help 108 This adds cpufreq driver support for Freescale i.MX8M series SoCs, 109 based on cpufreq-dt. 110 111 If in doubt, say N. 112 113config ARM_KIRKWOOD_CPUFREQ 114 def_bool MACH_KIRKWOOD 115 help 116 This adds the CPUFreq driver for Marvell Kirkwood 117 SoCs. 118 119config ARM_MEDIATEK_CPUFREQ 120 tristate "CPU Frequency scaling support for MediaTek SoCs" 121 depends on ARCH_MEDIATEK && REGULATOR 122 select PM_OPP 123 help 124 This adds the CPUFreq driver support for MediaTek SoCs. 125 126config ARM_OMAP2PLUS_CPUFREQ 127 bool "TI OMAP2+" 128 depends on ARCH_OMAP2PLUS 129 default ARCH_OMAP2PLUS 130 131config ARM_QCOM_CPUFREQ_NVMEM 132 tristate "Qualcomm nvmem based CPUFreq" 133 depends on ARCH_QCOM 134 depends on QCOM_QFPROM 135 depends on QCOM_SMEM 136 select PM_OPP 137 help 138 This adds the CPUFreq driver for Qualcomm Kryo SoC based boards. 139 140 If in doubt, say N. 141 142config ARM_QCOM_CPUFREQ_HW 143 tristate "QCOM CPUFreq HW driver" 144 depends on ARCH_QCOM || COMPILE_TEST 145 help 146 Support for the CPUFreq HW driver. 147 Some QCOM chipsets have a HW engine to offload the steps 148 necessary for changing the frequency of the CPUs. Firmware loaded 149 in this engine exposes a programming interface to the OS. 150 The driver implements the cpufreq interface for this HW engine. 151 Say Y if you want to support CPUFreq HW. 152 153config ARM_RASPBERRYPI_CPUFREQ 154 tristate "Raspberry Pi cpufreq support" 155 depends on CLK_RASPBERRYPI || COMPILE_TEST 156 help 157 This adds the CPUFreq driver for Raspberry Pi 158 159 If in doubt, say N. 160 161config ARM_ROCKCHIP_CPUFREQ 162 tristate "Rockchip CPUfreq driver" 163 depends on ARCH_ROCKCHIP && CPUFREQ_DT 164 select PM_OPP 165 help 166 This adds the CPUFreq driver support for Rockchip SoCs, 167 based on cpufreq-dt. 168 169 If in doubt, say N. 170 171config ARM_S3C_CPUFREQ 172 bool 173 help 174 Internal configuration node for common cpufreq on Samsung SoC 175 176config ARM_S3C24XX_CPUFREQ 177 bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)" 178 depends on ARCH_S3C24XX 179 select ARM_S3C_CPUFREQ 180 help 181 This enables the CPUfreq driver for the Samsung S3C24XX family 182 of CPUs. 183 184 For details, take a look at <file:Documentation/cpu-freq>. 185 186 If in doubt, say N. 187 188config ARM_S3C24XX_CPUFREQ_DEBUG 189 bool "Debug CPUfreq Samsung driver core" 190 depends on ARM_S3C24XX_CPUFREQ 191 help 192 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core 193 194config ARM_S3C24XX_CPUFREQ_IODEBUG 195 bool "Debug CPUfreq Samsung driver IO timing" 196 depends on ARM_S3C24XX_CPUFREQ 197 help 198 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core 199 200config ARM_S3C24XX_CPUFREQ_DEBUGFS 201 bool "Export debugfs for CPUFreq" 202 depends on ARM_S3C24XX_CPUFREQ && DEBUG_FS 203 help 204 Export status information via debugfs. 205 206config ARM_S3C2410_CPUFREQ 207 bool 208 depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2410 209 help 210 CPU Frequency scaling support for S3C2410 211 212config ARM_S3C2412_CPUFREQ 213 bool 214 depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2412 215 default y 216 select S3C2412_IOTIMING 217 help 218 CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs. 219 220config ARM_S3C2416_CPUFREQ 221 bool "S3C2416 CPU Frequency scaling support" 222 depends on CPU_S3C2416 223 help 224 This adds the CPUFreq driver for the Samsung S3C2416 and 225 S3C2450 SoC. The S3C2416 supports changing the rate of the 226 armdiv clock source and also entering a so called dynamic 227 voltage scaling mode in which it is possible to reduce the 228 core voltage of the CPU. 229 230 If in doubt, say N. 231 232config ARM_S3C2416_CPUFREQ_VCORESCALE 233 bool "Allow voltage scaling for S3C2416 arm core" 234 depends on ARM_S3C2416_CPUFREQ && REGULATOR 235 help 236 Enable CPU voltage scaling when entering the dvs mode. 237 It uses information gathered through existing hardware and 238 tests but not documented in any datasheet. 239 240 If in doubt, say N. 241 242config ARM_S3C2440_CPUFREQ 243 bool "S3C2440/S3C2442 CPU Frequency scaling support" 244 depends on ARM_S3C24XX_CPUFREQ && (CPU_S3C2440 || CPU_S3C2442) 245 default y 246 help 247 CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs. 248 249config ARM_S3C64XX_CPUFREQ 250 bool "Samsung S3C64XX" 251 depends on CPU_S3C6410 252 default y 253 help 254 This adds the CPUFreq driver for Samsung S3C6410 SoC. 255 256 If in doubt, say N. 257 258config ARM_S5PV210_CPUFREQ 259 bool "Samsung S5PV210 and S5PC110" 260 depends on CPU_S5PV210 261 default y 262 help 263 This adds the CPUFreq driver for Samsung S5PV210 and 264 S5PC110 SoCs. 265 266 If in doubt, say N. 267 268config ARM_SA1100_CPUFREQ 269 bool 270 271config ARM_SA1110_CPUFREQ 272 bool 273 274config ARM_SCMI_CPUFREQ 275 tristate "SCMI based CPUfreq driver" 276 depends on ARM_SCMI_PROTOCOL || COMPILE_TEST 277 select PM_OPP 278 help 279 This adds the CPUfreq driver support for ARM platforms using SCMI 280 protocol for CPU power management. 281 282 This driver uses SCMI Message Protocol driver to interact with the 283 firmware providing the CPU DVFS functionality. 284 285config ARM_SPEAR_CPUFREQ 286 bool "SPEAr CPUFreq support" 287 depends on PLAT_SPEAR 288 default y 289 help 290 This adds the CPUFreq driver support for SPEAr SOCs. 291 292config ARM_STI_CPUFREQ 293 tristate "STi CPUFreq support" 294 depends on CPUFREQ_DT && SOC_STIH407 295 help 296 This driver uses the generic OPP framework to match the running 297 platform with a predefined set of suitable values. If not provided 298 we will fall-back so safe-values contained in Device Tree. Enable 299 this config option if you wish to add CPUFreq support for STi based 300 SoCs. 301 302config ARM_TANGO_CPUFREQ 303 bool 304 depends on CPUFREQ_DT && ARCH_TANGO 305 default y 306 307config ARM_TEGRA20_CPUFREQ 308 tristate "Tegra20/30 CPUFreq support" 309 depends on ARCH_TEGRA && CPUFREQ_DT 310 default y 311 help 312 This adds the CPUFreq driver support for Tegra20/30 SOCs. 313 314config ARM_TEGRA124_CPUFREQ 315 bool "Tegra124 CPUFreq support" 316 depends on ARCH_TEGRA && CPUFREQ_DT 317 default y 318 help 319 This adds the CPUFreq driver support for Tegra124 SOCs. 320 321config ARM_TEGRA186_CPUFREQ 322 tristate "Tegra186 CPUFreq support" 323 depends on ARCH_TEGRA && TEGRA_BPMP 324 help 325 This adds the CPUFreq driver support for Tegra186 SOCs. 326 327config ARM_TEGRA194_CPUFREQ 328 tristate "Tegra194 CPUFreq support" 329 depends on ARCH_TEGRA_194_SOC && TEGRA_BPMP 330 default y 331 help 332 This adds CPU frequency driver support for Tegra194 SOCs. 333 334config ARM_TI_CPUFREQ 335 bool "Texas Instruments CPUFreq support" 336 depends on ARCH_OMAP2PLUS 337 default ARCH_OMAP2PLUS 338 help 339 This driver enables valid OPPs on the running platform based on 340 values contained within the SoC in use. Enable this in order to 341 use the cpufreq-dt driver on all Texas Instruments platforms that 342 provide dt based operating-points-v2 tables with opp-supported-hw 343 data provided. Required for cpufreq support on AM335x, AM437x, 344 DRA7x, and AM57x platforms. 345 346config ARM_PXA2xx_CPUFREQ 347 tristate "Intel PXA2xx CPUfreq driver" 348 depends on PXA27x || PXA25x 349 help 350 This add the CPUFreq driver support for Intel PXA2xx SOCs. 351 352 If in doubt, say N. 353