xref: /openbmc/linux/drivers/cpufreq/Kconfig.arm (revision b9221f71) 
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_ARMADA_37XX_CPUFREQ
45	tristate "Armada 37xx CPUFreq support"
46	depends on ARCH_MVEBU && CPUFREQ_DT
47	help
48	  This adds the CPUFreq driver support for Marvell Armada 37xx SoCs.
49	  The Armada 37xx PMU supports 4 frequency and VDD levels.
50
51config ARM_ARMADA_8K_CPUFREQ
52	tristate "Armada 8K CPUFreq driver"
53	depends on ARCH_MVEBU && CPUFREQ_DT
54	select ARMADA_AP_CPU_CLK
55	help
56	  This enables the CPUFreq driver support for Marvell
57	  Armada8k SOCs.
58	  Armada8K device has the AP806 which supports scaling
59	  to any full integer divider.
60
61	  If in doubt, say N.
62
63config ARM_SCPI_CPUFREQ
64	tristate "SCPI based CPUfreq driver"
65	depends on ARM_SCPI_PROTOCOL && COMMON_CLK_SCPI
66	help
67	  This adds the CPUfreq driver support for ARM platforms using SCPI
68	  protocol for CPU power management.
69
70	  This driver uses SCPI Message Protocol driver to interact with the
71	  firmware providing the CPU DVFS functionality.
72
73config ARM_VEXPRESS_SPC_CPUFREQ
74	tristate "Versatile Express SPC based CPUfreq driver"
75	depends on ARM_CPU_TOPOLOGY && HAVE_CLK
76	depends on ARCH_VEXPRESS_SPC
77	select PM_OPP
78	help
79	  This add the CPUfreq driver support for Versatile Express
80	  big.LITTLE platforms using SPC for power management.
81
82config ARM_BRCMSTB_AVS_CPUFREQ
83	tristate "Broadcom STB AVS CPUfreq driver"
84	depends on ARCH_BRCMSTB || COMPILE_TEST
85	default y
86	help
87	  Some Broadcom STB SoCs use a co-processor running proprietary firmware
88	  ("AVS") to handle voltage and frequency scaling. This driver provides
89	  a standard CPUfreq interface to to the firmware.
90
91	  Say Y, if you have a Broadcom SoC with AVS support for DFS or DVFS.
92
93config ARM_HIGHBANK_CPUFREQ
94	tristate "Calxeda Highbank-based"
95	depends on ARCH_HIGHBANK && CPUFREQ_DT && REGULATOR
96	default m
97	help
98	  This adds the CPUFreq driver for Calxeda Highbank SoC
99	  based boards.
100
101	  If in doubt, say N.
102
103config ARM_IMX6Q_CPUFREQ
104	tristate "Freescale i.MX6 cpufreq support"
105	depends on ARCH_MXC
106	depends on REGULATOR_ANATOP
107	depends on NVMEM_IMX_OCOTP || COMPILE_TEST
108	select PM_OPP
109	help
110	  This adds cpufreq driver support for Freescale i.MX6 series SoCs.
111
112	  If in doubt, say N.
113
114config ARM_IMX_CPUFREQ_DT
115	tristate "Freescale i.MX8M cpufreq support"
116	depends on ARCH_MXC && CPUFREQ_DT
117	help
118	  This adds cpufreq driver support for Freescale i.MX8M series SoCs,
119	  based on cpufreq-dt.
120
121	  If in doubt, say N.
122
123config ARM_KIRKWOOD_CPUFREQ
124	def_bool MACH_KIRKWOOD
125	help
126	  This adds the CPUFreq driver for Marvell Kirkwood
127	  SoCs.
128
129config ARM_MEDIATEK_CPUFREQ
130	tristate "CPU Frequency scaling support for MediaTek SoCs"
131	depends on ARCH_MEDIATEK && REGULATOR
132	select PM_OPP
133	help
134	  This adds the CPUFreq driver support for MediaTek SoCs.
135
136config ARM_MEDIATEK_CPUFREQ_HW
137	tristate "MediaTek CPUFreq HW driver"
138	depends on ARCH_MEDIATEK || COMPILE_TEST
139	default m
140	help
141	  Support for the CPUFreq HW driver.
142	  Some MediaTek chipsets have a HW engine to offload the steps
143	  necessary for changing the frequency of the CPUs. Firmware loaded
144	  in this engine exposes a programming interface to the OS.
145	  The driver implements the cpufreq interface for this HW engine.
146	  Say Y if you want to support CPUFreq HW.
147
148config ARM_OMAP2PLUS_CPUFREQ
149	bool "TI OMAP2+"
150	depends on ARCH_OMAP2PLUS
151	default ARCH_OMAP2PLUS
152
153config ARM_QCOM_CPUFREQ_NVMEM
154	tristate "Qualcomm nvmem based CPUFreq"
155	depends on ARCH_QCOM
156	depends on QCOM_QFPROM
157	depends on QCOM_SMEM
158	select PM_OPP
159	help
160	  This adds the CPUFreq driver for Qualcomm Kryo SoC based boards.
161
162	  If in doubt, say N.
163
164config ARM_QCOM_CPUFREQ_HW
165	tristate "QCOM CPUFreq HW driver"
166	depends on ARCH_QCOM || COMPILE_TEST
167	help
168	  Support for the CPUFreq HW driver.
169	  Some QCOM chipsets have a HW engine to offload the steps
170	  necessary for changing the frequency of the CPUs. Firmware loaded
171	  in this engine exposes a programming interface to the OS.
172	  The driver implements the cpufreq interface for this HW engine.
173	  Say Y if you want to support CPUFreq HW.
174
175config ARM_RASPBERRYPI_CPUFREQ
176	tristate "Raspberry Pi cpufreq support"
177	depends on CLK_RASPBERRYPI || COMPILE_TEST
178	help
179	  This adds the CPUFreq driver for Raspberry Pi
180
181	  If in doubt, say N.
182
183config ARM_S3C_CPUFREQ
184	bool
185	help
186	  Internal configuration node for common cpufreq on Samsung SoC
187
188config ARM_S3C24XX_CPUFREQ
189	bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
190	depends on ARCH_S3C24XX
191	select ARM_S3C_CPUFREQ
192	help
193	  This enables the CPUfreq driver for the Samsung S3C24XX family
194	  of CPUs.
195
196	  For details, take a look at <file:Documentation/cpu-freq>.
197
198	  If in doubt, say N.
199
200config ARM_S3C24XX_CPUFREQ_DEBUG
201	bool "Debug CPUfreq Samsung driver core"
202	depends on ARM_S3C24XX_CPUFREQ
203	help
204	  Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
205
206config ARM_S3C24XX_CPUFREQ_IODEBUG
207	bool "Debug CPUfreq Samsung driver IO timing"
208	depends on ARM_S3C24XX_CPUFREQ
209	help
210	  Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
211
212config ARM_S3C24XX_CPUFREQ_DEBUGFS
213	bool "Export debugfs for CPUFreq"
214	depends on ARM_S3C24XX_CPUFREQ && DEBUG_FS
215	help
216	  Export status information via debugfs.
217
218config ARM_S3C2410_CPUFREQ
219	bool
220	depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2410
221	help
222	  CPU Frequency scaling support for S3C2410
223
224config ARM_S3C2412_CPUFREQ
225	bool
226	depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2412
227	default y
228	select S3C2412_IOTIMING
229	help
230	  CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs.
231
232config ARM_S3C2416_CPUFREQ
233	bool "S3C2416 CPU Frequency scaling support"
234	depends on CPU_S3C2416
235	help
236	  This adds the CPUFreq driver for the Samsung S3C2416 and
237	  S3C2450 SoC. The S3C2416 supports changing the rate of the
238	  armdiv clock source and also entering a so called dynamic
239	  voltage scaling mode in which it is possible to reduce the
240	  core voltage of the CPU.
241
242	  If in doubt, say N.
243
244config ARM_S3C2416_CPUFREQ_VCORESCALE
245	bool "Allow voltage scaling for S3C2416 arm core"
246	depends on ARM_S3C2416_CPUFREQ && REGULATOR
247	help
248	  Enable CPU voltage scaling when entering the dvs mode.
249	  It uses information gathered through existing hardware and
250	  tests but not documented in any datasheet.
251
252	  If in doubt, say N.
253
254config ARM_S3C2440_CPUFREQ
255	bool "S3C2440/S3C2442 CPU Frequency scaling support"
256	depends on ARM_S3C24XX_CPUFREQ && (CPU_S3C2440 || CPU_S3C2442)
257	default y
258	help
259	  CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs.
260
261config ARM_S3C64XX_CPUFREQ
262	bool "Samsung S3C64XX"
263	depends on CPU_S3C6410
264	default y
265	help
266	  This adds the CPUFreq driver for Samsung S3C6410 SoC.
267
268	  If in doubt, say N.
269
270config ARM_S5PV210_CPUFREQ
271	bool "Samsung S5PV210 and S5PC110"
272	depends on CPU_S5PV210
273	default y
274	help
275	  This adds the CPUFreq driver for Samsung S5PV210 and
276	  S5PC110 SoCs.
277
278	  If in doubt, say N.
279
280config ARM_SA1100_CPUFREQ
281	bool
282
283config ARM_SA1110_CPUFREQ
284	bool
285
286config ARM_SCMI_CPUFREQ
287	tristate "SCMI based CPUfreq driver"
288	depends on ARM_SCMI_PROTOCOL || COMPILE_TEST
289	select PM_OPP
290	help
291	  This adds the CPUfreq driver support for ARM platforms using SCMI
292	  protocol for CPU power management.
293
294	  This driver uses SCMI Message Protocol driver to interact with the
295	  firmware providing the CPU DVFS functionality.
296
297config ARM_SPEAR_CPUFREQ
298	bool "SPEAr CPUFreq support"
299	depends on PLAT_SPEAR
300	default y
301	help
302	  This adds the CPUFreq driver support for SPEAr SOCs.
303
304config ARM_STI_CPUFREQ
305	tristate "STi CPUFreq support"
306	depends on CPUFREQ_DT && SOC_STIH407
307	help
308	  This driver uses the generic OPP framework to match the running
309	  platform with a predefined set of suitable values.  If not provided
310	  we will fall-back so safe-values contained in Device Tree.  Enable
311	  this config option if you wish to add CPUFreq support for STi based
312	  SoCs.
313
314config ARM_TEGRA20_CPUFREQ
315	tristate "Tegra20/30 CPUFreq support"
316	depends on ARCH_TEGRA && CPUFREQ_DT
317	default y
318	help
319	  This adds the CPUFreq driver support for Tegra20/30 SOCs.
320
321config ARM_TEGRA124_CPUFREQ
322	bool "Tegra124 CPUFreq support"
323	depends on ARCH_TEGRA && CPUFREQ_DT
324	default y
325	help
326	  This adds the CPUFreq driver support for Tegra124 SOCs.
327
328config ARM_TEGRA186_CPUFREQ
329	tristate "Tegra186 CPUFreq support"
330	depends on ARCH_TEGRA && TEGRA_BPMP
331	help
332	  This adds the CPUFreq driver support for Tegra186 SOCs.
333
334config ARM_TEGRA194_CPUFREQ
335	tristate "Tegra194 CPUFreq support"
336	depends on ARCH_TEGRA_194_SOC && TEGRA_BPMP
337	default y
338	help
339	  This adds CPU frequency driver support for Tegra194 SOCs.
340
341config ARM_TI_CPUFREQ
342	bool "Texas Instruments CPUFreq support"
343	depends on ARCH_OMAP2PLUS
344	default ARCH_OMAP2PLUS
345	help
346	  This driver enables valid OPPs on the running platform based on
347	  values contained within the SoC in use. Enable this in order to
348	  use the cpufreq-dt driver on all Texas Instruments platforms that
349	  provide dt based operating-points-v2 tables with opp-supported-hw
350	  data provided. Required for cpufreq support on AM335x, AM437x,
351	  DRA7x, and AM57x platforms.
352
353config ARM_PXA2xx_CPUFREQ
354	tristate "Intel PXA2xx CPUfreq driver"
355	depends on PXA27x || PXA25x
356	help
357	  This add the CPUFreq driver support for Intel PXA2xx SOCs.
358
359	  If in doubt, say N.
360