Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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. |
Venkatesh Pallipadi | 83d0515 | 2006-10-03 12:34:28 -0700 | [diff] [blame] | 20 | This driver also supports Intel Enhanced Speedstep. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | |
Sam Ravnborg | e8ef952 | 2007-11-06 19:35:19 +0100 | [diff] [blame] | 22 | To compile this driver as a module, choose M here: the |
| 23 | module will be called acpi-cpufreq. |
| 24 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | For details, take a look at <file:Documentation/cpu-freq/>. |
| 26 | |
| 27 | If in doubt, say N. |
| 28 | |
| 29 | config ELAN_CPUFREQ |
Dave Jones | bf6fc9f | 2005-05-31 19:03:45 -0700 | [diff] [blame] | 30 | tristate "AMD Elan SC400 and SC410" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | select CPU_FREQ_TABLE |
Dave Jones | 290647b | 2007-11-19 22:21:13 -0500 | [diff] [blame] | 32 | depends on X86_ELAN |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | ---help--- |
| 34 | This adds the CPUFreq driver for AMD Elan SC400 and SC410 |
| 35 | processors. |
| 36 | |
| 37 | You need to specify the processor maximum speed as boot |
| 38 | parameter: elanfreq=maxspeed (in kHz) or as module |
| 39 | parameter "max_freq". |
| 40 | |
| 41 | For details, take a look at <file:Documentation/cpu-freq/>. |
| 42 | |
| 43 | If in doubt, say N. |
| 44 | |
Dave Jones | bf6fc9f | 2005-05-31 19:03:45 -0700 | [diff] [blame] | 45 | config SC520_CPUFREQ |
| 46 | tristate "AMD Elan SC520" |
| 47 | select CPU_FREQ_TABLE |
Dave Jones | 290647b | 2007-11-19 22:21:13 -0500 | [diff] [blame] | 48 | depends on X86_ELAN |
Dave Jones | bf6fc9f | 2005-05-31 19:03:45 -0700 | [diff] [blame] | 49 | ---help--- |
| 50 | This adds the CPUFreq driver for AMD Elan SC520 processor. |
| 51 | |
| 52 | For details, take a look at <file:Documentation/cpu-freq/>. |
| 53 | |
| 54 | If in doubt, say N. |
| 55 | |
| 56 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | config X86_POWERNOW_K6 |
| 58 | tristate "AMD Mobile K6-2/K6-3 PowerNow!" |
| 59 | select CPU_FREQ_TABLE |
Sam Ravnborg | e8ef952 | 2007-11-06 19:35:19 +0100 | [diff] [blame] | 60 | depends on X86_32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | help |
| 62 | This adds the CPUFreq driver for mobile AMD K6-2+ and mobile |
| 63 | AMD K6-3+ processors. |
| 64 | |
| 65 | For details, take a look at <file:Documentation/cpu-freq/>. |
| 66 | |
| 67 | If in doubt, say N. |
| 68 | |
| 69 | config X86_POWERNOW_K7 |
| 70 | tristate "AMD Mobile Athlon/Duron PowerNow!" |
| 71 | select CPU_FREQ_TABLE |
Sam Ravnborg | e8ef952 | 2007-11-06 19:35:19 +0100 | [diff] [blame] | 72 | depends on X86_32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | help |
| 74 | This adds the CPUFreq driver for mobile AMD K7 mobile processors. |
| 75 | |
| 76 | For details, take a look at <file:Documentation/cpu-freq/>. |
| 77 | |
| 78 | If in doubt, say N. |
| 79 | |
| 80 | config X86_POWERNOW_K7_ACPI |
| 81 | bool |
| 82 | depends on X86_POWERNOW_K7 && ACPI_PROCESSOR |
| 83 | depends on !(X86_POWERNOW_K7 = y && ACPI_PROCESSOR = m) |
Sam Ravnborg | e8ef952 | 2007-11-06 19:35:19 +0100 | [diff] [blame] | 84 | depends on X86_32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | default y |
| 86 | |
| 87 | config X86_POWERNOW_K8 |
| 88 | tristate "AMD Opteron/Athlon64 PowerNow!" |
| 89 | select CPU_FREQ_TABLE |
Thomas Renninger | 57f4fa6 | 2009-02-04 01:17:45 +0100 | [diff] [blame^] | 90 | depends on ACPI && ACPI_PROCESSOR |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | help |
Thomas Renninger | 57f4fa6 | 2009-02-04 01:17:45 +0100 | [diff] [blame^] | 92 | This adds the CPUFreq driver for K8/K10 Opteron/Athlon64 processors. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | |
Sam Ravnborg | e8ef952 | 2007-11-06 19:35:19 +0100 | [diff] [blame] | 94 | To compile this driver as a module, choose M here: the |
| 95 | module will be called powernow-k8. |
| 96 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | For details, take a look at <file:Documentation/cpu-freq/>. |
| 98 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | config X86_GX_SUSPMOD |
| 100 | tristate "Cyrix MediaGX/NatSemi Geode Suspend Modulation" |
Sam Ravnborg | e8ef952 | 2007-11-06 19:35:19 +0100 | [diff] [blame] | 101 | depends on X86_32 && PCI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | help |
| 103 | This add the CPUFreq driver for NatSemi Geode processors which |
| 104 | support suspend modulation. |
| 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 |
Sam Ravnborg | e8ef952 | 2007-11-06 19:35:19 +0100 | [diff] [blame] | 111 | tristate "Intel Enhanced SpeedStep (deprecated)" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | select CPU_FREQ_TABLE |
Sam Ravnborg | e8ef952 | 2007-11-06 19:35:19 +0100 | [diff] [blame] | 113 | select X86_SPEEDSTEP_CENTRINO_TABLE if X86_32 |
| 114 | depends on X86_32 || (X86_64 && ACPI_PROCESSOR) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | help |
Sam Ravnborg | e8ef952 | 2007-11-06 19:35:19 +0100 | [diff] [blame] | 116 | This is deprecated and this functionality is now merged into |
| 117 | acpi_cpufreq (X86_ACPI_CPUFREQ). Use that driver instead of |
| 118 | speedstep_centrino. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | This adds the CPUFreq driver for Enhanced SpeedStep enabled |
Sam Ravnborg | e8ef952 | 2007-11-06 19:35:19 +0100 | [diff] [blame] | 120 | mobile CPUs. This means Intel Pentium M (Centrino) CPUs |
| 121 | or 64bit enabled Intel Xeons. |
| 122 | |
| 123 | To compile this driver as a module, choose M here: the |
| 124 | module will be called speedstep-centrino. |
Dave Jones | 388d6c5 | 2006-03-11 16:04:53 -0500 | [diff] [blame] | 125 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | For details, take a look at <file:Documentation/cpu-freq/>. |
Dave Jones | 388d6c5 | 2006-03-11 16:04:53 -0500 | [diff] [blame] | 127 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | If in doubt, say N. |
| 129 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | config X86_SPEEDSTEP_CENTRINO_TABLE |
| 131 | bool "Built-in tables for Banias CPUs" |
Sam Ravnborg | e8ef952 | 2007-11-06 19:35:19 +0100 | [diff] [blame] | 132 | depends on X86_32 && X86_SPEEDSTEP_CENTRINO |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | default y |
| 134 | help |
| 135 | Use built-in tables for Banias CPUs if ACPI encoding |
| 136 | is not available. |
| 137 | |
| 138 | If in doubt, say N. |
| 139 | |
| 140 | config X86_SPEEDSTEP_ICH |
| 141 | tristate "Intel Speedstep on ICH-M chipsets (ioport interface)" |
| 142 | select CPU_FREQ_TABLE |
Sam Ravnborg | e8ef952 | 2007-11-06 19:35:19 +0100 | [diff] [blame] | 143 | depends on X86_32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | help |
| 145 | This adds the CPUFreq driver for certain mobile Intel Pentium III |
| 146 | (Coppermine), all mobile Intel Pentium III-M (Tualatin) and all |
Dave Jones | 388d6c5 | 2006-03-11 16:04:53 -0500 | [diff] [blame] | 147 | mobile Intel Pentium 4 P4-M on systems which have an Intel ICH2, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | ICH3 or ICH4 southbridge. |
| 149 | |
| 150 | For details, take a look at <file:Documentation/cpu-freq/>. |
| 151 | |
| 152 | If in doubt, say N. |
| 153 | |
| 154 | config X86_SPEEDSTEP_SMI |
| 155 | tristate "Intel SpeedStep on 440BX/ZX/MX chipsets (SMI interface)" |
| 156 | select CPU_FREQ_TABLE |
Sam Ravnborg | e8ef952 | 2007-11-06 19:35:19 +0100 | [diff] [blame] | 157 | depends on X86_32 && EXPERIMENTAL |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | help |
| 159 | This adds the CPUFreq driver for certain mobile Intel Pentium III |
Dave Jones | 388d6c5 | 2006-03-11 16:04:53 -0500 | [diff] [blame] | 160 | (Coppermine), all mobile Intel Pentium III-M (Tualatin) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | on systems which have an Intel 440BX/ZX/MX southbridge. |
| 162 | |
| 163 | For details, take a look at <file:Documentation/cpu-freq/>. |
| 164 | |
| 165 | If in doubt, say N. |
| 166 | |
| 167 | config X86_P4_CLOCKMOD |
| 168 | tristate "Intel Pentium 4 clock modulation" |
| 169 | select CPU_FREQ_TABLE |
| 170 | help |
| 171 | This adds the CPUFreq driver for Intel Pentium 4 / XEON |
Sam Ravnborg | e8ef952 | 2007-11-06 19:35:19 +0100 | [diff] [blame] | 172 | processors. When enabled it will lower CPU temperature by skipping |
| 173 | clocks. |
| 174 | |
| 175 | This driver should be only used in exceptional |
| 176 | circumstances when very low power is needed because it causes severe |
| 177 | slowdowns and noticeable latencies. Normally Speedstep should be used |
| 178 | instead. |
| 179 | |
| 180 | To compile this driver as a module, choose M here: the |
| 181 | module will be called p4-clockmod. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | |
| 183 | For details, take a look at <file:Documentation/cpu-freq/>. |
| 184 | |
Sam Ravnborg | e8ef952 | 2007-11-06 19:35:19 +0100 | [diff] [blame] | 185 | Unless you are absolutely sure say N. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | |
| 187 | config X86_CPUFREQ_NFORCE2 |
| 188 | tristate "nVidia nForce2 FSB changing" |
Sam Ravnborg | e8ef952 | 2007-11-06 19:35:19 +0100 | [diff] [blame] | 189 | depends on X86_32 && EXPERIMENTAL |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | help |
| 191 | This adds the CPUFreq driver for FSB changing on nVidia nForce2 |
| 192 | platforms. |
| 193 | |
| 194 | For details, take a look at <file:Documentation/cpu-freq/>. |
| 195 | |
| 196 | If in doubt, say N. |
| 197 | |
| 198 | config X86_LONGRUN |
| 199 | tristate "Transmeta LongRun" |
Sam Ravnborg | e8ef952 | 2007-11-06 19:35:19 +0100 | [diff] [blame] | 200 | depends on X86_32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | help |
| 202 | This adds the CPUFreq driver for Transmeta Crusoe and Efficeon processors |
| 203 | which support LongRun. |
| 204 | |
| 205 | For details, take a look at <file:Documentation/cpu-freq/>. |
| 206 | |
| 207 | If in doubt, say N. |
| 208 | |
| 209 | config X86_LONGHAUL |
| 210 | tristate "VIA Cyrix III Longhaul" |
| 211 | select CPU_FREQ_TABLE |
Sam Ravnborg | e8ef952 | 2007-11-06 19:35:19 +0100 | [diff] [blame] | 212 | depends on X86_32 && ACPI_PROCESSOR |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | help |
Dave Jones | 388d6c5 | 2006-03-11 16:04:53 -0500 | [diff] [blame] | 214 | This adds the CPUFreq driver for VIA Samuel/CyrixIII, |
| 215 | VIA Cyrix Samuel/C3, VIA Cyrix Ezra and VIA Cyrix Ezra-T |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | processors. |
| 217 | |
| 218 | For details, take a look at <file:Documentation/cpu-freq/>. |
| 219 | |
| 220 | If in doubt, say N. |
| 221 | |
Rafa³ Bilski | 86acd49 | 2007-02-05 19:57:25 +0100 | [diff] [blame] | 222 | config X86_E_POWERSAVER |
Dave Jones | ec983f7 | 2008-07-30 12:05:03 -0400 | [diff] [blame] | 223 | tristate "VIA C7 Enhanced PowerSaver" |
Rafa³ Bilski | 86acd49 | 2007-02-05 19:57:25 +0100 | [diff] [blame] | 224 | select CPU_FREQ_TABLE |
Dave Jones | ec983f7 | 2008-07-30 12:05:03 -0400 | [diff] [blame] | 225 | depends on X86_32 |
Rafa³ Bilski | 86acd49 | 2007-02-05 19:57:25 +0100 | [diff] [blame] | 226 | help |
| 227 | This adds the CPUFreq driver for VIA C7 processors. |
| 228 | |
| 229 | If in doubt, say N. |
| 230 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | comment "shared options" |
| 232 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | config X86_SPEEDSTEP_LIB |
| 234 | tristate |
Sam Ravnborg | e8ef952 | 2007-11-06 19:35:19 +0100 | [diff] [blame] | 235 | default (X86_SPEEDSTEP_ICH || X86_SPEEDSTEP_SMI || X86_P4_CLOCKMOD) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | |
| 237 | config X86_SPEEDSTEP_RELAXED_CAP_CHECK |
| 238 | bool "Relaxed speedstep capability checks" |
Sam Ravnborg | e8ef952 | 2007-11-06 19:35:19 +0100 | [diff] [blame] | 239 | depends on X86_32 && (X86_SPEEDSTEP_SMI || X86_SPEEDSTEP_ICH) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | help |
Dave Jones | 388d6c5 | 2006-03-11 16:04:53 -0500 | [diff] [blame] | 241 | Don't perform all checks for a speedstep capable system which would |
| 242 | normally be done. Some ancient or strange systems, though speedstep |
| 243 | capable, don't always indicate that they are speedstep capable. This |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | option lets the probing code bypass some of those checks if the |
| 245 | parameter "relaxed_check=1" is passed to the module. |
| 246 | |
| 247 | endif # CPU_FREQ |
| 248 | |
| 249 | endmenu |