tjh.dev
Linux kernel mirror (for testing)
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linux
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 ACPI_CPPC_CPUFREQ_FIE
23 bool "Frequency Invariance support for CPPC cpufreq driver"
24 depends on ACPI_CPPC_CPUFREQ && GENERIC_ARCH_TOPOLOGY
25 default y
26 help
27 This extends frequency invariance support in the CPPC cpufreq driver,
28 by using CPPC delivered and reference performance counters.
29
30 If in doubt, say N.
31
32config ARM_ALLWINNER_SUN50I_CPUFREQ_NVMEM
33 tristate "Allwinner nvmem based SUN50I CPUFreq driver"
34 depends on ARCH_SUNXI
35 depends on NVMEM_SUNXI_SID
36 select PM_OPP
37 help
38 This adds the nvmem based CPUFreq driver for Allwinner
39 h6 SoC.
40
41 To compile this driver as a module, choose M here: the
42 module will be called sun50i-cpufreq-nvmem.
43
44config ARM_APPLE_SOC_CPUFREQ
45 tristate "Apple Silicon SoC CPUFreq support"
46 depends on ARCH_APPLE || (COMPILE_TEST && 64BIT)
47 select PM_OPP
48 default ARCH_APPLE
49 help
50 This adds the CPUFreq driver for Apple Silicon machines
51 (e.g. Apple M1).
52
53config ARM_ARMADA_37XX_CPUFREQ
54 tristate "Armada 37xx CPUFreq support"
55 depends on ARCH_MVEBU && CPUFREQ_DT
56 help
57 This adds the CPUFreq driver support for Marvell Armada 37xx SoCs.
58 The Armada 37xx PMU supports 4 frequency and VDD levels.
59
60config ARM_ARMADA_8K_CPUFREQ
61 tristate "Armada 8K CPUFreq driver"
62 depends on ARCH_MVEBU && CPUFREQ_DT
63 select ARMADA_AP_CPU_CLK
64 help
65 This enables the CPUFreq driver support for Marvell
66 Armada8k SOCs.
67 Armada8K device has the AP806 which supports scaling
68 to any full integer divider.
69
70 If in doubt, say N.
71
72config ARM_SCPI_CPUFREQ
73 tristate "SCPI based CPUfreq driver"
74 depends on ARM_SCPI_PROTOCOL && COMMON_CLK_SCPI
75 help
76 This adds the CPUfreq driver support for ARM platforms using SCPI
77 protocol for CPU power management.
78
79 This driver uses SCPI Message Protocol driver to interact with the
80 firmware providing the CPU DVFS functionality.
81
82config ARM_VEXPRESS_SPC_CPUFREQ
83 tristate "Versatile Express SPC based CPUfreq driver"
84 depends on ARM_CPU_TOPOLOGY && HAVE_CLK
85 depends on ARCH_VEXPRESS_SPC
86 select PM_OPP
87 help
88 This add the CPUfreq driver support for Versatile Express
89 big.LITTLE platforms using SPC for power management.
90
91config ARM_BRCMSTB_AVS_CPUFREQ
92 tristate "Broadcom STB AVS CPUfreq driver"
93 depends on (ARCH_BRCMSTB && !ARM_SCMI_CPUFREQ) || COMPILE_TEST
94 default y
95 help
96 Some Broadcom STB SoCs use a co-processor running proprietary firmware
97 ("AVS") to handle voltage and frequency scaling. This driver provides
98 a standard CPUfreq interface to the firmware.
99
100 Say Y, if you have a Broadcom SoC with AVS support for DFS or DVFS.
101
102config ARM_HIGHBANK_CPUFREQ
103 tristate "Calxeda Highbank-based"
104 depends on ARCH_HIGHBANK && CPUFREQ_DT && REGULATOR
105 default m
106 help
107 This adds the CPUFreq driver for Calxeda Highbank SoC
108 based boards.
109
110 If in doubt, say N.
111
112config ARM_IMX6Q_CPUFREQ
113 tristate "Freescale i.MX6 cpufreq support"
114 depends on ARCH_MXC
115 depends on REGULATOR_ANATOP
116 depends on NVMEM_IMX_OCOTP || COMPILE_TEST
117 select PM_OPP
118 help
119 This adds cpufreq driver support for Freescale i.MX6 series SoCs.
120
121 If in doubt, say N.
122
123config ARM_IMX_CPUFREQ_DT
124 tristate "Freescale i.MX8M cpufreq support"
125 depends on ARCH_MXC && CPUFREQ_DT
126 help
127 This adds cpufreq driver support for Freescale i.MX7/i.MX8M
128 series SoCs, based on cpufreq-dt.
129
130 If in doubt, say N.
131
132config ARM_KIRKWOOD_CPUFREQ
133 def_bool MACH_KIRKWOOD
134 help
135 This adds the CPUFreq driver for Marvell Kirkwood
136 SoCs.
137
138config ARM_MEDIATEK_CPUFREQ
139 tristate "CPU Frequency scaling support for MediaTek SoCs"
140 depends on ARCH_MEDIATEK && REGULATOR
141 select PM_OPP
142 help
143 This adds the CPUFreq driver support for MediaTek SoCs.
144
145config ARM_MEDIATEK_CPUFREQ_HW
146 tristate "MediaTek CPUFreq HW driver"
147 depends on ARCH_MEDIATEK || COMPILE_TEST
148 default m
149 help
150 Support for the CPUFreq HW driver.
151 Some MediaTek chipsets have a HW engine to offload the steps
152 necessary for changing the frequency of the CPUs. Firmware loaded
153 in this engine exposes a programming interface to the OS.
154 The driver implements the cpufreq interface for this HW engine.
155 Say Y if you want to support CPUFreq HW.
156
157config ARM_OMAP2PLUS_CPUFREQ
158 bool "TI OMAP2+"
159 depends on ARCH_OMAP2PLUS
160 default ARCH_OMAP2PLUS
161
162config ARM_QCOM_CPUFREQ_NVMEM
163 tristate "Qualcomm nvmem based CPUFreq"
164 depends on ARCH_QCOM
165 depends on NVMEM_QCOM_QFPROM
166 depends on QCOM_SMEM
167 select PM_OPP
168 help
169 This adds the CPUFreq driver for Qualcomm Kryo SoC based boards.
170
171 If in doubt, say N.
172
173config ARM_QCOM_CPUFREQ_HW
174 tristate "QCOM CPUFreq HW driver"
175 depends on ARCH_QCOM || COMPILE_TEST
176 help
177 Support for the CPUFreq HW driver.
178 Some QCOM chipsets have a HW engine to offload the steps
179 necessary for changing the frequency of the CPUs. Firmware loaded
180 in this engine exposes a programming interface to the OS.
181 The driver implements the cpufreq interface for this HW engine.
182 Say Y if you want to support CPUFreq HW.
183
184config ARM_RASPBERRYPI_CPUFREQ
185 tristate "Raspberry Pi cpufreq support"
186 depends on CLK_RASPBERRYPI || COMPILE_TEST
187 help
188 This adds the CPUFreq driver for Raspberry Pi
189
190 If in doubt, say N.
191
192config ARM_S3C64XX_CPUFREQ
193 bool "Samsung S3C64XX"
194 depends on CPU_S3C6410
195 default y
196 help
197 This adds the CPUFreq driver for Samsung S3C6410 SoC.
198
199 If in doubt, say N.
200
201config ARM_S5PV210_CPUFREQ
202 bool "Samsung S5PV210 and S5PC110"
203 depends on CPU_S5PV210
204 default y
205 help
206 This adds the CPUFreq driver for Samsung S5PV210 and
207 S5PC110 SoCs.
208
209 If in doubt, say N.
210
211config ARM_SA1110_CPUFREQ
212 bool
213
214config ARM_SCMI_CPUFREQ
215 tristate "SCMI based CPUfreq driver"
216 depends on ARM_SCMI_PROTOCOL || COMPILE_TEST
217 select PM_OPP
218 help
219 This adds the CPUfreq driver support for ARM platforms using SCMI
220 protocol for CPU power management.
221
222 This driver uses SCMI Message Protocol driver to interact with the
223 firmware providing the CPU DVFS functionality.
224
225config ARM_SPEAR_CPUFREQ
226 bool "SPEAr CPUFreq support"
227 depends on PLAT_SPEAR
228 default y
229 help
230 This adds the CPUFreq driver support for SPEAr SOCs.
231
232config ARM_STI_CPUFREQ
233 tristate "STi CPUFreq support"
234 depends on CPUFREQ_DT && SOC_STIH407
235 help
236 This driver uses the generic OPP framework to match the running
237 platform with a predefined set of suitable values. If not provided
238 we will fall-back so safe-values contained in Device Tree. Enable
239 this config option if you wish to add CPUFreq support for STi based
240 SoCs.
241
242config ARM_TEGRA20_CPUFREQ
243 tristate "Tegra20/30 CPUFreq support"
244 depends on ARCH_TEGRA && CPUFREQ_DT
245 default y
246 help
247 This adds the CPUFreq driver support for Tegra20/30 SOCs.
248
249config ARM_TEGRA124_CPUFREQ
250 bool "Tegra124 CPUFreq support"
251 depends on ARCH_TEGRA && CPUFREQ_DT
252 default y
253 help
254 This adds the CPUFreq driver support for Tegra124 SOCs.
255
256config ARM_TEGRA186_CPUFREQ
257 tristate "Tegra186 CPUFreq support"
258 depends on ARCH_TEGRA && TEGRA_BPMP
259 help
260 This adds the CPUFreq driver support for Tegra186 SOCs.
261
262config ARM_TEGRA194_CPUFREQ
263 tristate "Tegra194 CPUFreq support"
264 depends on ARCH_TEGRA_194_SOC && TEGRA_BPMP
265 default y
266 help
267 This adds CPU frequency driver support for Tegra194 SOCs.
268
269config ARM_TI_CPUFREQ
270 bool "Texas Instruments CPUFreq support"
271 depends on ARCH_OMAP2PLUS || ARCH_K3
272 default y
273 help
274 This driver enables valid OPPs on the running platform based on
275 values contained within the SoC in use. Enable this in order to
276 use the cpufreq-dt driver on all Texas Instruments platforms that
277 provide dt based operating-points-v2 tables with opp-supported-hw
278 data provided. Required for cpufreq support on AM335x, AM437x,
279 DRA7x, and AM57x platforms.
280
281config ARM_PXA2xx_CPUFREQ
282 tristate "Intel PXA2xx CPUfreq driver"
283 depends on PXA27x || PXA25x
284 help
285 This add the CPUFreq driver support for Intel PXA2xx SOCs.
286
287 If in doubt, say N.