xref: /openbmc/linux/drivers/cpufreq/Kconfig.arm (revision b17d2f8d) 
1#
2# ARM CPU Frequency scaling drivers
3#
4
5config ACPI_CPPC_CPUFREQ
6	tristate "CPUFreq driver based on the ACPI CPPC spec"
7	depends on ACPI_PROCESSOR
8	select ACPI_CPPC_LIB
9	help
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.
18
19	  If in doubt, say N.
20
21# big LITTLE core layer and glue drivers
22config ARM_BIG_LITTLE_CPUFREQ
23	tristate "Generic ARM big LITTLE CPUfreq driver"
24	depends on (ARM_CPU_TOPOLOGY || ARM64) && HAVE_CLK
25	# if CPU_THERMAL is on and THERMAL=m, ARM_BIT_LITTLE_CPUFREQ cannot be =y
26	depends on !CPU_THERMAL || THERMAL
27	select PM_OPP
28	help
29	  This enables the Generic CPUfreq driver for ARM big.LITTLE platforms.
30
31config ARM_DT_BL_CPUFREQ
32	tristate "Generic probing via DT for ARM big LITTLE CPUfreq driver"
33	depends on ARM_BIG_LITTLE_CPUFREQ && OF
34	help
35	  This enables probing via DT for Generic CPUfreq driver for ARM
36	  big.LITTLE platform. This gets frequency tables from DT.
37
38config ARM_SCPI_CPUFREQ
39	tristate "SCPI based CPUfreq driver"
40	depends on ARM_BIG_LITTLE_CPUFREQ && ARM_SCPI_PROTOCOL && COMMON_CLK_SCPI
41	help
42	  This adds the CPUfreq driver support for ARM big.LITTLE platforms
43	  using SCPI protocol for CPU power management.
44
45	  This driver uses SCPI Message Protocol driver to interact with the
46	  firmware providing the CPU DVFS functionality.
47
48config ARM_VEXPRESS_SPC_CPUFREQ
49	tristate "Versatile Express SPC based CPUfreq driver"
50	depends on ARM_BIG_LITTLE_CPUFREQ && ARCH_VEXPRESS_SPC
51	help
52	  This add the CPUfreq driver support for Versatile Express
53	  big.LITTLE platforms using SPC for power management.
54
55config ARM_BRCMSTB_AVS_CPUFREQ
56	tristate "Broadcom STB AVS CPUfreq driver"
57	depends on ARCH_BRCMSTB || COMPILE_TEST
58	default y
59	help
60	  Some Broadcom STB SoCs use a co-processor running proprietary firmware
61	  ("AVS") to handle voltage and frequency scaling. This driver provides
62	  a standard CPUfreq interface to to the firmware.
63
64	  Say Y, if you have a Broadcom SoC with AVS support for DFS or DVFS.
65
66config ARM_BRCMSTB_AVS_CPUFREQ_DEBUG
67	bool "Broadcom STB AVS CPUfreq driver sysfs debug capability"
68	depends on ARM_BRCMSTB_AVS_CPUFREQ
69	help
70	  Enabling this option turns on debug support via sysfs under
71	  /sys/kernel/debug/brcmstb-avs-cpufreq. It is possible to read all and
72	  write some AVS mailbox registers through sysfs entries.
73
74	  If in doubt, say N.
75
76config ARM_EXYNOS5440_CPUFREQ
77	tristate "SAMSUNG EXYNOS5440"
78	depends on SOC_EXYNOS5440
79	depends on HAVE_CLK && OF
80	select PM_OPP
81	default y
82	help
83	  This adds the CPUFreq driver for Samsung EXYNOS5440
84	  SoC. The nature of exynos5440 clock controller is
85	  different than previous exynos controllers so not using
86	  the common exynos framework.
87
88	  If in doubt, say N.
89
90config ARM_HIGHBANK_CPUFREQ
91	tristate "Calxeda Highbank-based"
92	depends on ARCH_HIGHBANK && CPUFREQ_DT && REGULATOR
93	default m
94	help
95	  This adds the CPUFreq driver for Calxeda Highbank SoC
96	  based boards.
97
98	  If in doubt, say N.
99
100config ARM_IMX6Q_CPUFREQ
101	tristate "Freescale i.MX6 cpufreq support"
102	depends on ARCH_MXC
103	depends on REGULATOR_ANATOP
104	select PM_OPP
105	help
106	  This adds cpufreq driver support for Freescale i.MX6 series SoCs.
107
108	  If in doubt, say N.
109
110config ARM_KIRKWOOD_CPUFREQ
111	def_bool MACH_KIRKWOOD
112	help
113	  This adds the CPUFreq driver for Marvell Kirkwood
114	  SoCs.
115
116config ARM_MEDIATEK_CPUFREQ
117	tristate "CPU Frequency scaling support for MediaTek SoCs"
118	depends on ARCH_MEDIATEK && REGULATOR
119	depends on !CPU_THERMAL || THERMAL
120	select PM_OPP
121	help
122	  This adds the CPUFreq driver support for MediaTek SoCs.
123
124config ARM_OMAP2PLUS_CPUFREQ
125	bool "TI OMAP2+"
126	depends on ARCH_OMAP2PLUS
127	default ARCH_OMAP2PLUS
128
129config ARM_S3C_CPUFREQ
130	bool
131	help
132	  Internal configuration node for common cpufreq on Samsung SoC
133
134config ARM_S3C24XX_CPUFREQ
135	bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
136	depends on ARCH_S3C24XX
137	select ARM_S3C_CPUFREQ
138	help
139	  This enables the CPUfreq driver for the Samsung S3C24XX family
140	  of CPUs.
141
142	  For details, take a look at <file:Documentation/cpu-freq>.
143
144	  If in doubt, say N.
145
146config ARM_S3C24XX_CPUFREQ_DEBUG
147	bool "Debug CPUfreq Samsung driver core"
148	depends on ARM_S3C24XX_CPUFREQ
149	help
150	  Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
151
152config ARM_S3C24XX_CPUFREQ_IODEBUG
153	bool "Debug CPUfreq Samsung driver IO timing"
154	depends on ARM_S3C24XX_CPUFREQ
155	help
156	  Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
157
158config ARM_S3C24XX_CPUFREQ_DEBUGFS
159	bool "Export debugfs for CPUFreq"
160	depends on ARM_S3C24XX_CPUFREQ && DEBUG_FS
161	help
162	  Export status information via debugfs.
163
164config ARM_S3C2410_CPUFREQ
165	bool
166	depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2410
167	select S3C2410_CPUFREQ_UTILS
168	help
169	  CPU Frequency scaling support for S3C2410
170
171config ARM_S3C2412_CPUFREQ
172	bool
173	depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2412
174	default y
175	select S3C2412_IOTIMING
176	help
177	  CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs.
178
179config ARM_S3C2416_CPUFREQ
180	bool "S3C2416 CPU Frequency scaling support"
181	depends on CPU_S3C2416
182	help
183	  This adds the CPUFreq driver for the Samsung S3C2416 and
184	  S3C2450 SoC. The S3C2416 supports changing the rate of the
185	  armdiv clock source and also entering a so called dynamic
186	  voltage scaling mode in which it is possible to reduce the
187	  core voltage of the CPU.
188
189	  If in doubt, say N.
190
191config ARM_S3C2416_CPUFREQ_VCORESCALE
192	bool "Allow voltage scaling for S3C2416 arm core"
193	depends on ARM_S3C2416_CPUFREQ && REGULATOR
194	help
195	  Enable CPU voltage scaling when entering the dvs mode.
196	  It uses information gathered through existing hardware and
197	  tests but not documented in any datasheet.
198
199	  If in doubt, say N.
200
201config ARM_S3C2440_CPUFREQ
202	bool "S3C2440/S3C2442 CPU Frequency scaling support"
203	depends on ARM_S3C24XX_CPUFREQ && (CPU_S3C2440 || CPU_S3C2442)
204	select S3C2410_CPUFREQ_UTILS
205	default y
206	help
207	  CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs.
208
209config ARM_S3C64XX_CPUFREQ
210	bool "Samsung S3C64XX"
211	depends on CPU_S3C6410
212	default y
213	help
214	  This adds the CPUFreq driver for Samsung S3C6410 SoC.
215
216	  If in doubt, say N.
217
218config ARM_S5PV210_CPUFREQ
219	bool "Samsung S5PV210 and S5PC110"
220	depends on CPU_S5PV210
221	default y
222	help
223	  This adds the CPUFreq driver for Samsung S5PV210 and
224	  S5PC110 SoCs.
225
226	  If in doubt, say N.
227
228config ARM_SA1100_CPUFREQ
229	bool
230
231config ARM_SA1110_CPUFREQ
232	bool
233
234config ARM_SPEAR_CPUFREQ
235	bool "SPEAr CPUFreq support"
236	depends on PLAT_SPEAR
237	default y
238	help
239	  This adds the CPUFreq driver support for SPEAr SOCs.
240
241config ARM_STI_CPUFREQ
242	tristate "STi CPUFreq support"
243	depends on SOC_STIH407
244	help
245	  This driver uses the generic OPP framework to match the running
246	  platform with a predefined set of suitable values.  If not provided
247	  we will fall-back so safe-values contained in Device Tree.  Enable
248	  this config option if you wish to add CPUFreq support for STi based
249	  SoCs.
250
251config ARM_TANGO_CPUFREQ
252	bool
253	depends on CPUFREQ_DT && ARCH_TANGO
254	default y
255
256config ARM_TEGRA20_CPUFREQ
257	bool "Tegra20 CPUFreq support"
258	depends on ARCH_TEGRA
259	default y
260	help
261	  This adds the CPUFreq driver support for Tegra20 SOCs.
262
263config ARM_TEGRA124_CPUFREQ
264	tristate "Tegra124 CPUFreq support"
265	depends on ARCH_TEGRA && CPUFREQ_DT && REGULATOR
266	default y
267	help
268	  This adds the CPUFreq driver support for Tegra124 SOCs.
269
270config ARM_TEGRA186_CPUFREQ
271	tristate "Tegra186 CPUFreq support"
272	depends on ARCH_TEGRA && TEGRA_BPMP
273	help
274	  This adds the CPUFreq driver support for Tegra186 SOCs.
275
276config ARM_TI_CPUFREQ
277	bool "Texas Instruments CPUFreq support"
278	depends on ARCH_OMAP2PLUS
279	help
280	  This driver enables valid OPPs on the running platform based on
281	  values contained within the SoC in use. Enable this in order to
282	  use the cpufreq-dt driver on all Texas Instruments platforms that
283	  provide dt based operating-points-v2 tables with opp-supported-hw
284	  data provided. Required for cpufreq support on AM335x, AM437x,
285	  DRA7x, and AM57x platforms.
286
287config ARM_PXA2xx_CPUFREQ
288	tristate "Intel PXA2xx CPUfreq driver"
289	depends on PXA27x || PXA25x
290	help
291	  This add the CPUFreq driver support for Intel PXA2xx SOCs.
292
293	  If in doubt, say N.
294