xref: /openbmc/linux/drivers/cpufreq/Kconfig.arm (revision 0da908c2) 
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 || 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 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.MX8M series SoCs,
128	  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_S3C_CPUFREQ
193	bool
194	help
195	  Internal configuration node for common cpufreq on Samsung SoC
196
197config ARM_S3C24XX_CPUFREQ
198	bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
199	depends on ARCH_S3C24XX
200	select ARM_S3C_CPUFREQ
201	help
202	  This enables the CPUfreq driver for the Samsung S3C24XX family
203	  of CPUs.
204
205	  For details, take a look at <file:Documentation/cpu-freq>.
206
207	  If in doubt, say N.
208
209config ARM_S3C24XX_CPUFREQ_DEBUG
210	bool "Debug CPUfreq Samsung driver core"
211	depends on ARM_S3C24XX_CPUFREQ
212	help
213	  Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
214
215config ARM_S3C24XX_CPUFREQ_IODEBUG
216	bool "Debug CPUfreq Samsung driver IO timing"
217	depends on ARM_S3C24XX_CPUFREQ
218	help
219	  Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
220
221config ARM_S3C24XX_CPUFREQ_DEBUGFS
222	bool "Export debugfs for CPUFreq"
223	depends on ARM_S3C24XX_CPUFREQ && DEBUG_FS
224	help
225	  Export status information via debugfs.
226
227config ARM_S3C2410_CPUFREQ
228	bool
229	depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2410
230	help
231	  CPU Frequency scaling support for S3C2410
232
233config ARM_S3C2412_CPUFREQ
234	bool
235	depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2412
236	default y
237	select S3C2412_IOTIMING
238	help
239	  CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs.
240
241config ARM_S3C2416_CPUFREQ
242	bool "S3C2416 CPU Frequency scaling support"
243	depends on CPU_S3C2416
244	help
245	  This adds the CPUFreq driver for the Samsung S3C2416 and
246	  S3C2450 SoC. The S3C2416 supports changing the rate of the
247	  armdiv clock source and also entering a so called dynamic
248	  voltage scaling mode in which it is possible to reduce the
249	  core voltage of the CPU.
250
251	  If in doubt, say N.
252
253config ARM_S3C2416_CPUFREQ_VCORESCALE
254	bool "Allow voltage scaling for S3C2416 arm core"
255	depends on ARM_S3C2416_CPUFREQ && REGULATOR
256	help
257	  Enable CPU voltage scaling when entering the dvs mode.
258	  It uses information gathered through existing hardware and
259	  tests but not documented in any datasheet.
260
261	  If in doubt, say N.
262
263config ARM_S3C2440_CPUFREQ
264	bool "S3C2440/S3C2442 CPU Frequency scaling support"
265	depends on ARM_S3C24XX_CPUFREQ && (CPU_S3C2440 || CPU_S3C2442)
266	default y
267	help
268	  CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs.
269
270config ARM_S3C64XX_CPUFREQ
271	bool "Samsung S3C64XX"
272	depends on CPU_S3C6410
273	default y
274	help
275	  This adds the CPUFreq driver for Samsung S3C6410 SoC.
276
277	  If in doubt, say N.
278
279config ARM_S5PV210_CPUFREQ
280	bool "Samsung S5PV210 and S5PC110"
281	depends on CPU_S5PV210
282	default y
283	help
284	  This adds the CPUFreq driver for Samsung S5PV210 and
285	  S5PC110 SoCs.
286
287	  If in doubt, say N.
288
289config ARM_SA1100_CPUFREQ
290	bool
291
292config ARM_SA1110_CPUFREQ
293	bool
294
295config ARM_SCMI_CPUFREQ
296	tristate "SCMI based CPUfreq driver"
297	depends on ARM_SCMI_PROTOCOL || COMPILE_TEST
298	select PM_OPP
299	help
300	  This adds the CPUfreq driver support for ARM platforms using SCMI
301	  protocol for CPU power management.
302
303	  This driver uses SCMI Message Protocol driver to interact with the
304	  firmware providing the CPU DVFS functionality.
305
306config ARM_SPEAR_CPUFREQ
307	bool "SPEAr CPUFreq support"
308	depends on PLAT_SPEAR
309	default y
310	help
311	  This adds the CPUFreq driver support for SPEAr SOCs.
312
313config ARM_STI_CPUFREQ
314	tristate "STi CPUFreq support"
315	depends on CPUFREQ_DT && SOC_STIH407
316	help
317	  This driver uses the generic OPP framework to match the running
318	  platform with a predefined set of suitable values.  If not provided
319	  we will fall-back so safe-values contained in Device Tree.  Enable
320	  this config option if you wish to add CPUFreq support for STi based
321	  SoCs.
322
323config ARM_TEGRA20_CPUFREQ
324	tristate "Tegra20/30 CPUFreq support"
325	depends on ARCH_TEGRA && CPUFREQ_DT
326	default y
327	help
328	  This adds the CPUFreq driver support for Tegra20/30 SOCs.
329
330config ARM_TEGRA124_CPUFREQ
331	bool "Tegra124 CPUFreq support"
332	depends on ARCH_TEGRA && CPUFREQ_DT
333	default y
334	help
335	  This adds the CPUFreq driver support for Tegra124 SOCs.
336
337config ARM_TEGRA186_CPUFREQ
338	tristate "Tegra186 CPUFreq support"
339	depends on ARCH_TEGRA && TEGRA_BPMP
340	help
341	  This adds the CPUFreq driver support for Tegra186 SOCs.
342
343config ARM_TEGRA194_CPUFREQ
344	tristate "Tegra194 CPUFreq support"
345	depends on ARCH_TEGRA_194_SOC && TEGRA_BPMP
346	default y
347	help
348	  This adds CPU frequency driver support for Tegra194 SOCs.
349
350config ARM_TI_CPUFREQ
351	bool "Texas Instruments CPUFreq support"
352	depends on ARCH_OMAP2PLUS || ARCH_K3
353	default y
354	help
355	  This driver enables valid OPPs on the running platform based on
356	  values contained within the SoC in use. Enable this in order to
357	  use the cpufreq-dt driver on all Texas Instruments platforms that
358	  provide dt based operating-points-v2 tables with opp-supported-hw
359	  data provided. Required for cpufreq support on AM335x, AM437x,
360	  DRA7x, and AM57x platforms.
361
362config ARM_PXA2xx_CPUFREQ
363	tristate "Intel PXA2xx CPUfreq driver"
364	depends on PXA27x || PXA25x
365	help
366	  This add the CPUFreq driver support for Intel PXA2xx SOCs.
367
368	  If in doubt, say N.
369