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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
53# big LITTLE core layer and glue drivers
54config ARM_BIG_LITTLE_CPUFREQ
55	tristate "Generic ARM big LITTLE CPUfreq driver"
56	depends on ARM_CPU_TOPOLOGY && HAVE_CLK
57	select PM_OPP
58	help
59	  This enables the Generic CPUfreq driver for ARM big.LITTLE platforms.
60
61config ARM_SCPI_CPUFREQ
62	tristate "SCPI based CPUfreq driver"
63	depends on ARM_SCPI_PROTOCOL && COMMON_CLK_SCPI
64	help
65	  This adds the CPUfreq driver support for ARM platforms using SCPI
66	  protocol for CPU power management.
67
68	  This driver uses SCPI Message Protocol driver to interact with the
69	  firmware providing the CPU DVFS functionality.
70
71config ARM_VEXPRESS_SPC_CPUFREQ
72	tristate "Versatile Express SPC based CPUfreq driver"
73	depends on ARM_BIG_LITTLE_CPUFREQ && ARCH_VEXPRESS_SPC
74	help
75	  This add the CPUfreq driver support for Versatile Express
76	  big.LITTLE platforms using SPC for power management.
77
78config ARM_BRCMSTB_AVS_CPUFREQ
79	tristate "Broadcom STB AVS CPUfreq driver"
80	depends on ARCH_BRCMSTB || COMPILE_TEST
81	default y
82	help
83	  Some Broadcom STB SoCs use a co-processor running proprietary firmware
84	  ("AVS") to handle voltage and frequency scaling. This driver provides
85	  a standard CPUfreq interface to to the firmware.
86
87	  Say Y, if you have a Broadcom SoC with AVS support for DFS or DVFS.
88
89config ARM_HIGHBANK_CPUFREQ
90	tristate "Calxeda Highbank-based"
91	depends on ARCH_HIGHBANK && CPUFREQ_DT && REGULATOR
92	default m
93	help
94	  This adds the CPUFreq driver for Calxeda Highbank SoC
95	  based boards.
96
97	  If in doubt, say N.
98
99config ARM_IMX6Q_CPUFREQ
100	tristate "Freescale i.MX6 cpufreq support"
101	depends on ARCH_MXC
102	depends on REGULATOR_ANATOP
103	select PM_OPP
104	help
105	  This adds cpufreq driver support for Freescale i.MX6 series SoCs.
106
107	  If in doubt, say N.
108
109config ARM_IMX_CPUFREQ_DT
110	tristate "Freescale i.MX8M cpufreq support"
111	depends on ARCH_MXC && CPUFREQ_DT
112	help
113	  This adds cpufreq driver support for Freescale i.MX8M series SoCs,
114	  based on cpufreq-dt.
115
116	  If in doubt, say N.
117
118config ARM_KIRKWOOD_CPUFREQ
119	def_bool MACH_KIRKWOOD
120	help
121	  This adds the CPUFreq driver for Marvell Kirkwood
122	  SoCs.
123
124config ARM_MEDIATEK_CPUFREQ
125	tristate "CPU Frequency scaling support for MediaTek SoCs"
126	depends on ARCH_MEDIATEK && REGULATOR
127	select PM_OPP
128	help
129	  This adds the CPUFreq driver support for MediaTek SoCs.
130
131config ARM_OMAP2PLUS_CPUFREQ
132	bool "TI OMAP2+"
133	depends on ARCH_OMAP2PLUS
134	default ARCH_OMAP2PLUS
135
136config ARM_QCOM_CPUFREQ_NVMEM
137	tristate "Qualcomm nvmem based CPUFreq"
138	depends on ARM64
139	depends on QCOM_QFPROM
140	depends on QCOM_SMEM
141	select PM_OPP
142	help
143	  This adds the CPUFreq driver for Qualcomm Kryo SoC based boards.
144
145	  If in doubt, say N.
146
147config ARM_QCOM_CPUFREQ_HW
148	tristate "QCOM CPUFreq HW driver"
149	depends on ARCH_QCOM || COMPILE_TEST
150	help
151	  Support for the CPUFreq HW driver.
152	  Some QCOM chipsets have a HW engine to offload the steps
153	  necessary for changing the frequency of the CPUs. Firmware loaded
154	  in this engine exposes a programming interface to the OS.
155	  The driver implements the cpufreq interface for this HW engine.
156	  Say Y if you want to support CPUFreq HW.
157
158config ARM_RASPBERRYPI_CPUFREQ
159	tristate "Raspberry Pi cpufreq support"
160	depends on CLK_RASPBERRYPI || COMPILE_TEST
161	help
162	  This adds the CPUFreq driver for Raspberry Pi
163
164	  If in doubt, say N.
165
166config ARM_S3C_CPUFREQ
167	bool
168	help
169	  Internal configuration node for common cpufreq on Samsung SoC
170
171config ARM_S3C24XX_CPUFREQ
172	bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
173	depends on ARCH_S3C24XX
174	select ARM_S3C_CPUFREQ
175	help
176	  This enables the CPUfreq driver for the Samsung S3C24XX family
177	  of CPUs.
178
179	  For details, take a look at <file:Documentation/cpu-freq>.
180
181	  If in doubt, say N.
182
183config ARM_S3C24XX_CPUFREQ_DEBUG
184	bool "Debug CPUfreq Samsung driver core"
185	depends on ARM_S3C24XX_CPUFREQ
186	help
187	  Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
188
189config ARM_S3C24XX_CPUFREQ_IODEBUG
190	bool "Debug CPUfreq Samsung driver IO timing"
191	depends on ARM_S3C24XX_CPUFREQ
192	help
193	  Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
194
195config ARM_S3C24XX_CPUFREQ_DEBUGFS
196	bool "Export debugfs for CPUFreq"
197	depends on ARM_S3C24XX_CPUFREQ && DEBUG_FS
198	help
199	  Export status information via debugfs.
200
201config ARM_S3C2410_CPUFREQ
202	bool
203	depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2410
204	select S3C2410_CPUFREQ_UTILS
205	help
206	  CPU Frequency scaling support for S3C2410
207
208config ARM_S3C2412_CPUFREQ
209	bool
210	depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2412
211	default y
212	select S3C2412_IOTIMING
213	help
214	  CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs.
215
216config ARM_S3C2416_CPUFREQ
217	bool "S3C2416 CPU Frequency scaling support"
218	depends on CPU_S3C2416
219	help
220	  This adds the CPUFreq driver for the Samsung S3C2416 and
221	  S3C2450 SoC. The S3C2416 supports changing the rate of the
222	  armdiv clock source and also entering a so called dynamic
223	  voltage scaling mode in which it is possible to reduce the
224	  core voltage of the CPU.
225
226	  If in doubt, say N.
227
228config ARM_S3C2416_CPUFREQ_VCORESCALE
229	bool "Allow voltage scaling for S3C2416 arm core"
230	depends on ARM_S3C2416_CPUFREQ && REGULATOR
231	help
232	  Enable CPU voltage scaling when entering the dvs mode.
233	  It uses information gathered through existing hardware and
234	  tests but not documented in any datasheet.
235
236	  If in doubt, say N.
237
238config ARM_S3C2440_CPUFREQ
239	bool "S3C2440/S3C2442 CPU Frequency scaling support"
240	depends on ARM_S3C24XX_CPUFREQ && (CPU_S3C2440 || CPU_S3C2442)
241	select S3C2410_CPUFREQ_UTILS
242	default y
243	help
244	  CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs.
245
246config ARM_S3C64XX_CPUFREQ
247	bool "Samsung S3C64XX"
248	depends on CPU_S3C6410
249	default y
250	help
251	  This adds the CPUFreq driver for Samsung S3C6410 SoC.
252
253	  If in doubt, say N.
254
255config ARM_S5PV210_CPUFREQ
256	bool "Samsung S5PV210 and S5PC110"
257	depends on CPU_S5PV210
258	default y
259	help
260	  This adds the CPUFreq driver for Samsung S5PV210 and
261	  S5PC110 SoCs.
262
263	  If in doubt, say N.
264
265config ARM_SA1100_CPUFREQ
266	bool
267
268config ARM_SA1110_CPUFREQ
269	bool
270
271config ARM_SCMI_CPUFREQ
272	tristate "SCMI based CPUfreq driver"
273	depends on ARM_SCMI_PROTOCOL || COMPILE_TEST
274	select PM_OPP
275	help
276	  This adds the CPUfreq driver support for ARM platforms using SCMI
277	  protocol for CPU power management.
278
279	  This driver uses SCMI Message Protocol driver to interact with the
280	  firmware providing the CPU DVFS functionality.
281
282config ARM_SPEAR_CPUFREQ
283	bool "SPEAr CPUFreq support"
284	depends on PLAT_SPEAR
285	default y
286	help
287	  This adds the CPUFreq driver support for SPEAr SOCs.
288
289config ARM_STI_CPUFREQ
290	tristate "STi CPUFreq support"
291	depends on SOC_STIH407
292	help
293	  This driver uses the generic OPP framework to match the running
294	  platform with a predefined set of suitable values.  If not provided
295	  we will fall-back so safe-values contained in Device Tree.  Enable
296	  this config option if you wish to add CPUFreq support for STi based
297	  SoCs.
298
299config ARM_TANGO_CPUFREQ
300	bool
301	depends on CPUFREQ_DT && ARCH_TANGO
302	default y
303
304config ARM_TEGRA20_CPUFREQ
305	tristate "Tegra20 CPUFreq support"
306	depends on ARCH_TEGRA
307	default y
308	help
309	  This adds the CPUFreq driver support for Tegra20 SOCs.
310
311config ARM_TEGRA124_CPUFREQ
312	bool "Tegra124 CPUFreq support"
313	depends on ARCH_TEGRA && CPUFREQ_DT
314	default y
315	help
316	  This adds the CPUFreq driver support for Tegra124 SOCs.
317
318config ARM_TEGRA186_CPUFREQ
319	tristate "Tegra186 CPUFreq support"
320	depends on ARCH_TEGRA && TEGRA_BPMP
321	help
322	  This adds the CPUFreq driver support for Tegra186 SOCs.
323
324config ARM_TI_CPUFREQ
325	bool "Texas Instruments CPUFreq support"
326	depends on ARCH_OMAP2PLUS
327	help
328	  This driver enables valid OPPs on the running platform based on
329	  values contained within the SoC in use. Enable this in order to
330	  use the cpufreq-dt driver on all Texas Instruments platforms that
331	  provide dt based operating-points-v2 tables with opp-supported-hw
332	  data provided. Required for cpufreq support on AM335x, AM437x,
333	  DRA7x, and AM57x platforms.
334
335config ARM_PXA2xx_CPUFREQ
336	tristate "Intel PXA2xx CPUfreq driver"
337	depends on PXA27x || PXA25x
338	help
339	  This add the CPUFreq driver support for Intel PXA2xx SOCs.
340
341	  If in doubt, say N.
342