Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | # |
2 | # CPU Frequency scaling | |
3 | # | |
4 | ||
5 | menu "CPU Frequency scaling" | |
6 | ||
7 | source "drivers/cpufreq/Kconfig" | |
8 | ||
9 | if CPU_FREQ | |
10 | ||
11 | comment "CPUFreq processor drivers" | |
12 | ||
13 | config X86_ACPI_CPUFREQ | |
14 | tristate "ACPI Processor P-States driver" | |
15 | select CPU_FREQ_TABLE | |
16 | depends on ACPI_PROCESSOR | |
17 | help | |
18 | This driver adds a CPUFreq driver which utilizes the ACPI | |
19 | Processor Performance States. | |
20 | ||
21 | For details, take a look at <file:Documentation/cpu-freq/>. | |
22 | ||
23 | If in doubt, say N. | |
24 | ||
25 | config ELAN_CPUFREQ | |
26 | tristate "AMD Elan" | |
27 | select CPU_FREQ_TABLE | |
28 | depends on X86_ELAN | |
29 | ---help--- | |
30 | This adds the CPUFreq driver for AMD Elan SC400 and SC410 | |
31 | processors. | |
32 | ||
33 | You need to specify the processor maximum speed as boot | |
34 | parameter: elanfreq=maxspeed (in kHz) or as module | |
35 | parameter "max_freq". | |
36 | ||
37 | For details, take a look at <file:Documentation/cpu-freq/>. | |
38 | ||
39 | If in doubt, say N. | |
40 | ||
41 | config X86_POWERNOW_K6 | |
42 | tristate "AMD Mobile K6-2/K6-3 PowerNow!" | |
43 | select CPU_FREQ_TABLE | |
44 | help | |
45 | This adds the CPUFreq driver for mobile AMD K6-2+ and mobile | |
46 | AMD K6-3+ processors. | |
47 | ||
48 | For details, take a look at <file:Documentation/cpu-freq/>. | |
49 | ||
50 | If in doubt, say N. | |
51 | ||
52 | config X86_POWERNOW_K7 | |
53 | tristate "AMD Mobile Athlon/Duron PowerNow!" | |
54 | select CPU_FREQ_TABLE | |
55 | help | |
56 | This adds the CPUFreq driver for mobile AMD K7 mobile processors. | |
57 | ||
58 | For details, take a look at <file:Documentation/cpu-freq/>. | |
59 | ||
60 | If in doubt, say N. | |
61 | ||
62 | config X86_POWERNOW_K7_ACPI | |
63 | bool | |
64 | depends on X86_POWERNOW_K7 && ACPI_PROCESSOR | |
65 | depends on !(X86_POWERNOW_K7 = y && ACPI_PROCESSOR = m) | |
66 | default y | |
67 | ||
68 | config X86_POWERNOW_K8 | |
69 | tristate "AMD Opteron/Athlon64 PowerNow!" | |
70 | select CPU_FREQ_TABLE | |
71 | depends on EXPERIMENTAL | |
72 | help | |
73 | This adds the CPUFreq driver for mobile AMD Opteron/Athlon64 processors. | |
74 | ||
75 | For details, take a look at <file:Documentation/cpu-freq/>. | |
76 | ||
77 | If in doubt, say N. | |
78 | ||
79 | config X86_POWERNOW_K8_ACPI | |
80 | bool | |
81 | depends on X86_POWERNOW_K8 && ACPI_PROCESSOR | |
82 | depends on !(X86_POWERNOW_K8 = y && ACPI_PROCESSOR = m) | |
83 | default y | |
84 | ||
85 | config X86_GX_SUSPMOD | |
86 | tristate "Cyrix MediaGX/NatSemi Geode Suspend Modulation" | |
87 | help | |
88 | This add the CPUFreq driver for NatSemi Geode processors which | |
89 | support suspend modulation. | |
90 | ||
91 | For details, take a look at <file:Documentation/cpu-freq/>. | |
92 | ||
93 | If in doubt, say N. | |
94 | ||
95 | config X86_SPEEDSTEP_CENTRINO | |
96 | tristate "Intel Enhanced SpeedStep" | |
97 | select CPU_FREQ_TABLE | |
98 | select X86_SPEEDSTEP_CENTRINO_TABLE if (!X86_SPEEDSTEP_CENTRINO_ACPI) | |
99 | help | |
100 | This adds the CPUFreq driver for Enhanced SpeedStep enabled | |
101 | mobile CPUs. This means Intel Pentium M (Centrino) CPUs. However, | |
102 | you also need to say Y to "Use ACPI tables to decode..." below | |
103 | [which might imply enabling ACPI] if you want to use this driver | |
104 | on non-Banias CPUs. | |
105 | ||
106 | For details, take a look at <file:Documentation/cpu-freq/>. | |
107 | ||
108 | If in doubt, say N. | |
109 | ||
110 | config X86_SPEEDSTEP_CENTRINO_ACPI | |
111 | bool "Use ACPI tables to decode valid frequency/voltage pairs" | |
112 | depends on X86_SPEEDSTEP_CENTRINO && ACPI_PROCESSOR | |
113 | depends on !(X86_SPEEDSTEP_CENTRINO = y && ACPI_PROCESSOR = m) | |
114 | default y | |
115 | help | |
116 | Use primarily the information provided in the BIOS ACPI tables | |
117 | to determine valid CPU frequency and voltage pairings. It is | |
118 | required for the driver to work on non-Banias CPUs. | |
119 | ||
120 | If in doubt, say Y. | |
121 | ||
122 | config X86_SPEEDSTEP_CENTRINO_TABLE | |
123 | bool "Built-in tables for Banias CPUs" | |
124 | depends on X86_SPEEDSTEP_CENTRINO | |
125 | default y | |
126 | help | |
127 | Use built-in tables for Banias CPUs if ACPI encoding | |
128 | is not available. | |
129 | ||
130 | If in doubt, say N. | |
131 | ||
132 | config X86_SPEEDSTEP_ICH | |
133 | tristate "Intel Speedstep on ICH-M chipsets (ioport interface)" | |
134 | select CPU_FREQ_TABLE | |
135 | help | |
136 | This adds the CPUFreq driver for certain mobile Intel Pentium III | |
137 | (Coppermine), all mobile Intel Pentium III-M (Tualatin) and all | |
138 | mobile Intel Pentium 4 P4-M on systems which have an Intel ICH2, | |
139 | ICH3 or ICH4 southbridge. | |
140 | ||
141 | For details, take a look at <file:Documentation/cpu-freq/>. | |
142 | ||
143 | If in doubt, say N. | |
144 | ||
145 | config X86_SPEEDSTEP_SMI | |
146 | tristate "Intel SpeedStep on 440BX/ZX/MX chipsets (SMI interface)" | |
147 | select CPU_FREQ_TABLE | |
148 | depends on EXPERIMENTAL | |
149 | help | |
150 | This adds the CPUFreq driver for certain mobile Intel Pentium III | |
151 | (Coppermine), all mobile Intel Pentium III-M (Tualatin) | |
152 | on systems which have an Intel 440BX/ZX/MX southbridge. | |
153 | ||
154 | For details, take a look at <file:Documentation/cpu-freq/>. | |
155 | ||
156 | If in doubt, say N. | |
157 | ||
158 | config X86_P4_CLOCKMOD | |
159 | tristate "Intel Pentium 4 clock modulation" | |
160 | select CPU_FREQ_TABLE | |
161 | help | |
162 | This adds the CPUFreq driver for Intel Pentium 4 / XEON | |
163 | processors. | |
164 | ||
165 | For details, take a look at <file:Documentation/cpu-freq/>. | |
166 | ||
167 | If in doubt, say N. | |
168 | ||
169 | config X86_CPUFREQ_NFORCE2 | |
170 | tristate "nVidia nForce2 FSB changing" | |
171 | depends on EXPERIMENTAL | |
172 | help | |
173 | This adds the CPUFreq driver for FSB changing on nVidia nForce2 | |
174 | platforms. | |
175 | ||
176 | For details, take a look at <file:Documentation/cpu-freq/>. | |
177 | ||
178 | If in doubt, say N. | |
179 | ||
180 | config X86_LONGRUN | |
181 | tristate "Transmeta LongRun" | |
182 | help | |
183 | This adds the CPUFreq driver for Transmeta Crusoe and Efficeon processors | |
184 | which support LongRun. | |
185 | ||
186 | For details, take a look at <file:Documentation/cpu-freq/>. | |
187 | ||
188 | If in doubt, say N. | |
189 | ||
190 | config X86_LONGHAUL | |
191 | tristate "VIA Cyrix III Longhaul" | |
192 | select CPU_FREQ_TABLE | |
193 | help | |
194 | This adds the CPUFreq driver for VIA Samuel/CyrixIII, | |
195 | VIA Cyrix Samuel/C3, VIA Cyrix Ezra and VIA Cyrix Ezra-T | |
196 | processors. | |
197 | ||
198 | For details, take a look at <file:Documentation/cpu-freq/>. | |
199 | ||
200 | If in doubt, say N. | |
201 | ||
202 | comment "shared options" | |
203 | ||
204 | config X86_ACPI_CPUFREQ_PROC_INTF | |
205 | bool "/proc/acpi/processor/../performance interface (deprecated)" | |
206 | depends on PROC_FS | |
207 | depends on X86_ACPI_CPUFREQ || X86_SPEEDSTEP_CENTRINO_ACPI || X86_POWERNOW_K7_ACPI || X86_POWERNOW_K8_ACPI | |
208 | help | |
209 | This enables the deprecated /proc/acpi/processor/../performance | |
210 | interface. While it is helpful for debugging, the generic, | |
211 | cross-architecture cpufreq interfaces should be used. | |
212 | ||
213 | If in doubt, say N. | |
214 | ||
215 | config X86_SPEEDSTEP_LIB | |
216 | tristate | |
217 | default X86_SPEEDSTEP_ICH || X86_SPEEDSTEP_SMI || X86_P4_CLOCKMOD | |
218 | ||
219 | config X86_SPEEDSTEP_RELAXED_CAP_CHECK | |
220 | bool "Relaxed speedstep capability checks" | |
221 | depends on (X86_SPEEDSTEP_SMI || X86_SPEEDSTEP_ICH) | |
222 | help | |
223 | Don't perform all checks for a speedstep capable system which would | |
224 | normally be done. Some ancient or strange systems, though speedstep | |
225 | capable, don't always indicate that they are speedstep capable. This | |
226 | option lets the probing code bypass some of those checks if the | |
227 | parameter "relaxed_check=1" is passed to the module. | |
228 | ||
229 | endif # CPU_FREQ | |
230 | ||
231 | endmenu |