2 # ARM CPU Frequency scaling drivers
5 config ACPI_CPPC_CPUFREQ
6 tristate "CPUFreq driver based on the ACPI CPPC spec"
7 depends on ACPI_PROCESSOR
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.
21 config ARM_ARMADA_37XX_CPUFREQ
22 tristate "Armada 37xx CPUFreq support"
23 depends on ARCH_MVEBU && CPUFREQ_DT
25 This adds the CPUFreq driver support for Marvell Armada 37xx SoCs.
26 The Armada 37xx PMU supports 4 frequency and VDD levels.
28 config ARM_ARMADA_8K_CPUFREQ
29 tristate "Armada 8K CPUFreq driver"
30 depends on ARCH_MVEBU && CPUFREQ_DT
32 This enables the CPUFreq driver support for Marvell
34 Armada8K device has the AP806 which supports scaling
35 to any full integer divider.
39 # big LITTLE core layer and glue drivers
40 config ARM_BIG_LITTLE_CPUFREQ
41 tristate "Generic ARM big LITTLE CPUfreq driver"
42 depends on ARM_CPU_TOPOLOGY && HAVE_CLK
45 This enables the Generic CPUfreq driver for ARM big.LITTLE platforms.
47 config ARM_SCPI_CPUFREQ
48 tristate "SCPI based CPUfreq driver"
49 depends on ARM_SCPI_PROTOCOL && COMMON_CLK_SCPI
51 This adds the CPUfreq driver support for ARM platforms using SCPI
52 protocol for CPU power management.
54 This driver uses SCPI Message Protocol driver to interact with the
55 firmware providing the CPU DVFS functionality.
57 config ARM_VEXPRESS_SPC_CPUFREQ
58 tristate "Versatile Express SPC based CPUfreq driver"
59 depends on ARM_BIG_LITTLE_CPUFREQ && ARCH_VEXPRESS_SPC
61 This add the CPUfreq driver support for Versatile Express
62 big.LITTLE platforms using SPC for power management.
64 config ARM_BRCMSTB_AVS_CPUFREQ
65 tristate "Broadcom STB AVS CPUfreq driver"
66 depends on ARCH_BRCMSTB || COMPILE_TEST
69 Some Broadcom STB SoCs use a co-processor running proprietary firmware
70 ("AVS") to handle voltage and frequency scaling. This driver provides
71 a standard CPUfreq interface to to the firmware.
73 Say Y, if you have a Broadcom SoC with AVS support for DFS or DVFS.
75 config ARM_HIGHBANK_CPUFREQ
76 tristate "Calxeda Highbank-based"
77 depends on ARCH_HIGHBANK && CPUFREQ_DT && REGULATOR
80 This adds the CPUFreq driver for Calxeda Highbank SoC
85 config ARM_IMX6Q_CPUFREQ
86 tristate "Freescale i.MX6 cpufreq support"
88 depends on REGULATOR_ANATOP
91 This adds cpufreq driver support for Freescale i.MX6 series SoCs.
95 config ARM_KIRKWOOD_CPUFREQ
96 def_bool MACH_KIRKWOOD
98 This adds the CPUFreq driver for Marvell Kirkwood
101 config ARM_MEDIATEK_CPUFREQ
102 tristate "CPU Frequency scaling support for MediaTek SoCs"
103 depends on ARCH_MEDIATEK && REGULATOR
106 This adds the CPUFreq driver support for MediaTek SoCs.
108 config ARM_OMAP2PLUS_CPUFREQ
110 depends on ARCH_OMAP2PLUS
111 default ARCH_OMAP2PLUS
113 config ARM_QCOM_CPUFREQ_KRYO
114 tristate "Qualcomm Kryo based CPUFreq"
116 depends on QCOM_QFPROM
120 This adds the CPUFreq driver for Qualcomm Kryo SoC based boards.
124 config ARM_QCOM_CPUFREQ_HW
125 tristate "QCOM CPUFreq HW driver"
126 depends on ARCH_QCOM || COMPILE_TEST
128 Support for the CPUFreq HW driver.
129 Some QCOM chipsets have a HW engine to offload the steps
130 necessary for changing the frequency of the CPUs. Firmware loaded
131 in this engine exposes a programming interface to the OS.
132 The driver implements the cpufreq interface for this HW engine.
133 Say Y if you want to support CPUFreq HW.
135 config ARM_S3C_CPUFREQ
138 Internal configuration node for common cpufreq on Samsung SoC
140 config ARM_S3C24XX_CPUFREQ
141 bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
142 depends on ARCH_S3C24XX
143 select ARM_S3C_CPUFREQ
145 This enables the CPUfreq driver for the Samsung S3C24XX family
148 For details, take a look at <file:Documentation/cpu-freq>.
152 config ARM_S3C24XX_CPUFREQ_DEBUG
153 bool "Debug CPUfreq Samsung driver core"
154 depends on ARM_S3C24XX_CPUFREQ
156 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
158 config ARM_S3C24XX_CPUFREQ_IODEBUG
159 bool "Debug CPUfreq Samsung driver IO timing"
160 depends on ARM_S3C24XX_CPUFREQ
162 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
164 config ARM_S3C24XX_CPUFREQ_DEBUGFS
165 bool "Export debugfs for CPUFreq"
166 depends on ARM_S3C24XX_CPUFREQ && DEBUG_FS
168 Export status information via debugfs.
170 config ARM_S3C2410_CPUFREQ
172 depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2410
173 select S3C2410_CPUFREQ_UTILS
175 CPU Frequency scaling support for S3C2410
177 config ARM_S3C2412_CPUFREQ
179 depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2412
181 select S3C2412_IOTIMING
183 CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs.
185 config ARM_S3C2416_CPUFREQ
186 bool "S3C2416 CPU Frequency scaling support"
187 depends on CPU_S3C2416
189 This adds the CPUFreq driver for the Samsung S3C2416 and
190 S3C2450 SoC. The S3C2416 supports changing the rate of the
191 armdiv clock source and also entering a so called dynamic
192 voltage scaling mode in which it is possible to reduce the
193 core voltage of the CPU.
197 config ARM_S3C2416_CPUFREQ_VCORESCALE
198 bool "Allow voltage scaling for S3C2416 arm core"
199 depends on ARM_S3C2416_CPUFREQ && REGULATOR
201 Enable CPU voltage scaling when entering the dvs mode.
202 It uses information gathered through existing hardware and
203 tests but not documented in any datasheet.
207 config ARM_S3C2440_CPUFREQ
208 bool "S3C2440/S3C2442 CPU Frequency scaling support"
209 depends on ARM_S3C24XX_CPUFREQ && (CPU_S3C2440 || CPU_S3C2442)
210 select S3C2410_CPUFREQ_UTILS
213 CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs.
215 config ARM_S3C64XX_CPUFREQ
216 bool "Samsung S3C64XX"
217 depends on CPU_S3C6410
220 This adds the CPUFreq driver for Samsung S3C6410 SoC.
224 config ARM_S5PV210_CPUFREQ
225 bool "Samsung S5PV210 and S5PC110"
226 depends on CPU_S5PV210
229 This adds the CPUFreq driver for Samsung S5PV210 and
234 config ARM_SA1100_CPUFREQ
237 config ARM_SA1110_CPUFREQ
240 config ARM_SCMI_CPUFREQ
241 tristate "SCMI based CPUfreq driver"
242 depends on ARM_SCMI_PROTOCOL || COMPILE_TEST
245 This adds the CPUfreq driver support for ARM platforms using SCMI
246 protocol for CPU power management.
248 This driver uses SCMI Message Protocol driver to interact with the
249 firmware providing the CPU DVFS functionality.
251 config ARM_SPEAR_CPUFREQ
252 bool "SPEAr CPUFreq support"
253 depends on PLAT_SPEAR
256 This adds the CPUFreq driver support for SPEAr SOCs.
258 config ARM_STI_CPUFREQ
259 tristate "STi CPUFreq support"
260 depends on SOC_STIH407
262 This driver uses the generic OPP framework to match the running
263 platform with a predefined set of suitable values. If not provided
264 we will fall-back so safe-values contained in Device Tree. Enable
265 this config option if you wish to add CPUFreq support for STi based
268 config ARM_TANGO_CPUFREQ
270 depends on CPUFREQ_DT && ARCH_TANGO
273 config ARM_TEGRA20_CPUFREQ
274 tristate "Tegra20 CPUFreq support"
275 depends on ARCH_TEGRA
278 This adds the CPUFreq driver support for Tegra20 SOCs.
280 config ARM_TEGRA124_CPUFREQ
281 bool "Tegra124 CPUFreq support"
282 depends on ARCH_TEGRA && CPUFREQ_DT
285 This adds the CPUFreq driver support for Tegra124 SOCs.
287 config ARM_TEGRA186_CPUFREQ
288 tristate "Tegra186 CPUFreq support"
289 depends on ARCH_TEGRA && TEGRA_BPMP
291 This adds the CPUFreq driver support for Tegra186 SOCs.
293 config ARM_TI_CPUFREQ
294 bool "Texas Instruments CPUFreq support"
295 depends on ARCH_OMAP2PLUS
297 This driver enables valid OPPs on the running platform based on
298 values contained within the SoC in use. Enable this in order to
299 use the cpufreq-dt driver on all Texas Instruments platforms that
300 provide dt based operating-points-v2 tables with opp-supported-hw
301 data provided. Required for cpufreq support on AM335x, AM437x,
302 DRA7x, and AM57x platforms.
304 config ARM_PXA2xx_CPUFREQ
305 tristate "Intel PXA2xx CPUfreq driver"
306 depends on PXA27x || PXA25x
308 This add the CPUFreq driver support for Intel PXA2xx SOCs.