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/linux-4.4.14/drivers/cpufreq/
DMakefile2 obj-$(CONFIG_CPU_FREQ) += cpufreq.o freq_table.o
15 obj-$(CONFIG_CPUFREQ_DT) += cpufreq-dt.o
24 obj-$(CONFIG_X86_ACPI_CPUFREQ) += acpi-cpufreq.o
26 obj-$(CONFIG_X86_PCC_CPUFREQ) += pcc-cpufreq.o
40 obj-$(CONFIG_X86_CPUFREQ_NFORCE2) += cpufreq-nforce2.o
43 obj-$(CONFIG_X86_SFI_CPUFREQ) += sfi-cpufreq.o
52 obj-$(CONFIG_ARCH_DAVINCI) += davinci-cpufreq.o
53 obj-$(CONFIG_UX500_SOC_DB8500) += dbx500-cpufreq.o
54 obj-$(CONFIG_ARM_EXYNOS5440_CPUFREQ) += exynos5440-cpufreq.o
55 obj-$(CONFIG_ARM_HIGHBANK_CPUFREQ) += highbank-cpufreq.o
[all …]
Ddavinci-cpufreq.c39 static struct davinci_cpufreq cpufreq; variable
43 struct davinci_cpufreq_config *pdata = cpufreq.dev->platform_data; in davinci_verify_speed()
45 struct clk *armclk = cpufreq.armclk; in davinci_verify_speed()
63 struct davinci_cpufreq_config *pdata = cpufreq.dev->platform_data; in davinci_target()
64 struct clk *armclk = cpufreq.armclk; in davinci_target()
82 if (cpufreq.asyncclk) { in davinci_target()
83 ret = clk_set_rate(cpufreq.asyncclk, cpufreq.asyncrate); in davinci_target()
98 struct davinci_cpufreq_config *pdata = cpufreq.dev->platform_data; in davinci_cpu_init()
111 policy->clk = cpufreq.armclk; in davinci_cpu_init()
142 cpufreq.dev = &pdev->dev; in davinci_cpufreq_probe()
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DKconfig12 clock speed, you need to either enable a dynamic cpufreq governor
89 loading your cpufreq low-level hardware driver.
90 Be aware that not all cpufreq drivers support the ondemand
101 loading your cpufreq low-level hardware driver.
102 Be aware that not all cpufreq drivers support the conservative
110 This cpufreq governor sets the frequency statically to the
121 This cpufreq governor sets the frequency statically to the
132 Enable this cpufreq governor when you either want to set the
145 tristate "'ondemand' cpufreq policy governor"
148 'ondemand' - This driver adds a dynamic cpufreq policy governor.
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Dpxa3xx-cpufreq.c55 #define OP(cpufreq, _xl, _xn, _hss, _dmc, _smc, _sfl, _dfi, vcore, vsram) \ argument
57 .cpufreq_mhz = cpufreq, \
DKconfig.x8625 <file:Documentation/cpu-freq/pcc-cpufreq.txt>.
28 module will be called pcc-cpufreq.
42 module will be called acpi-cpufreq.
129 Support for K10 and newer processors is now in acpi-cpufreq.
277 and is thus considered dangerous. Please use the regular ACPI cpufreq
DKconfig.arm61 tristate "Freescale i.MX6 cpufreq support"
66 This adds cpufreq driver support for Freescale i.MX6 series SoCs.
101 Internal configuration node for common cpufreq on Samsung SoC
DKconfig.powerpc6 This adds the cpufreq driver for Cell BE processors.
/linux-4.4.14/tools/power/cpupower/
D.gitignore6 cpufreq-info
7 cpufreq-set
8 cpufreq-aperf
10 lib/cpufreq.lo
11 lib/cpufreq.o
18 utils/cpufreq-info.o
19 utils/cpufreq-set.o
20 utils/cpufreq-aperf.o
22 bench/cpufreq-bench
DREADME16 tools and programs to the cpufreq core and drivers in the Linux kernel. This
18 the interaction to the cpufreq core, and support for both the sysfs and proc
30 /usr/lib; cpupower, cpufreq-bench_plot.sh to put in /usr/bin; and
31 cpufreq-bench to put in /usr/sbin. If you want to set up the paths
/linux-4.4.14/tools/power/cpupower/po/
Dpt.po225 #: utils/cpufreq-info.c:31
230 #: utils/cpufreq-info.c:63
238 #: utils/cpufreq-info.c:151
248 #: utils/cpufreq-info.c:161
253 #: utils/cpufreq-info.c:163
258 #: utils/cpufreq-info.c:163 utils/cpufreq-info.c:164
262 #: utils/cpufreq-info.c:163 utils/cpufreq-info.c:164
266 #: utils/cpufreq-info.c:164
271 #: utils/cpufreq-info.c:177
276 #: utils/cpufreq-info.c:178
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Dit.po227 #: utils/cpufreq-info.c:31
232 #: utils/cpufreq-info.c:63
239 #: utils/cpufreq-info.c:151
249 #: utils/cpufreq-info.c:161
254 #: utils/cpufreq-info.c:163
259 #: utils/cpufreq-info.c:163 utils/cpufreq-info.c:164
263 #: utils/cpufreq-info.c:163 utils/cpufreq-info.c:164
267 #: utils/cpufreq-info.c:164
272 #: utils/cpufreq-info.c:177
277 #: utils/cpufreq-info.c:178
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Dcs.po232 #: utils/cpufreq-info.c:31
237 #: utils/cpufreq-info.c:63
244 #: utils/cpufreq-info.c:151
254 #: utils/cpufreq-info.c:161
259 #: utils/cpufreq-info.c:163
264 #: utils/cpufreq-info.c:163 utils/cpufreq-info.c:164
268 #: utils/cpufreq-info.c:163 utils/cpufreq-info.c:164
272 #: utils/cpufreq-info.c:164
277 #: utils/cpufreq-info.c:177
282 #: utils/cpufreq-info.c:178
[all …]
Dde.po227 #: utils/cpufreq-info.c:31
233 #: utils/cpufreq-info.c:63
240 #: utils/cpufreq-info.c:151
250 #: utils/cpufreq-info.c:161
255 #: utils/cpufreq-info.c:163
260 #: utils/cpufreq-info.c:163 utils/cpufreq-info.c:164
264 #: utils/cpufreq-info.c:163 utils/cpufreq-info.c:164
268 #: utils/cpufreq-info.c:164
273 #: utils/cpufreq-info.c:177
278 #: utils/cpufreq-info.c:178
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Dfr.po227 #: utils/cpufreq-info.c:31
232 #: utils/cpufreq-info.c:63
239 #: utils/cpufreq-info.c:151
249 #: utils/cpufreq-info.c:161
254 #: utils/cpufreq-info.c:163
259 #: utils/cpufreq-info.c:163 utils/cpufreq-info.c:164
263 #: utils/cpufreq-info.c:163 utils/cpufreq-info.c:164
267 #: utils/cpufreq-info.c:164
272 #: utils/cpufreq-info.c:177
277 #: utils/cpufreq-info.c:178
[all …]
/linux-4.4.14/tools/power/cpupower/bench/
Dcpufreq-bench_script.sh43 echo $up_threshold >/sys/devices/system/cpu/cpu0/cpufreq/ondemand/up_threshold
44 echo $sampling_rate >/sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_rate
45 up_threshold_set=$(cat /sys/devices/system/cpu/cpu0/cpufreq/ondemand/up_threshold)
46 sampling_rate_set=$(cat /sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_rate)
61 …cpufreq-bench -o /var/log/cpufreq-bench/up_threshold_${up_threshold}_sampling_rate_${sampling_rate}
DREADME-BENCH1 This is cpufreq-bench, a microbenchmark for the cpufreq framework.
10 - (Stress) Testing whether a cpufreq low level driver or governor works
12 - Identify cpufreq related performance regressions between kernels
27 cpufreq-bench helps to test the condition of a given cpufreq governor.
80 trigger of the cpufreq-bench, you will see no performance loss (compare with
107 cpufreq-bench Command Usage
115 -g, --governor=<governor> cpufreq governor to test
Dexample.cfg5 output = /var/log/cpufreq-bench
/linux-4.4.14/Documentation/devicetree/bindings/cpufreq/
Dcpufreq-exynos5440.txt2 Exynos5440 cpufreq driver
5 Exynos5440 SoC cpufreq driver for CPU frequency scaling.
16 All the required listed above must be defined under node cpufreq.
20 cpufreq@160000 {
21 compatible = "samsung,exynos5440-cpufreq";
Dcpufreq-spear.txt1 SPEAr cpufreq driver
4 SPEAr SoC cpufreq driver for CPU frequency scaling.
Dcpufreq-dt.txt1 Generic cpufreq driver
3 It is a generic DT based cpufreq driver for frequency management. It supports
Darm_big_little_dt.txt1 Generic ARM big LITTLE cpufreq driver's DT glue
4 This is DT specific glue layer for generic cpufreq driver for big LITTLE
/linux-4.4.14/Documentation/cpu-freq/
Dcpufreq-stats.txt15 3. Configuring cpufreq-stats
20 cpufreq-stats is a driver that provides CPU frequency statistics for each CPU.
22 interface (when configured) will appear in a separate directory under cpufreq
23 in /sysfs (<sysfs root>/devices/system/cpu/cpuX/cpufreq/stats/) for each CPU.
32 cpufreq stats provides following statistics (explained in detail below).
43 <mysystem>:/sys/devices/system/cpu/cpu0/cpufreq/stats # ls -l
60 <mysystem>:/sys/devices/system/cpu/cpu0/cpufreq/stats # cat time_in_state
75 <mysystem>:/sys/devices/system/cpu/cpu0/cpufreq/stats # cat total_trans
88 <mysystem>:/sys/devices/system/cpu/cpu0/cpufreq/stats # cat trans_table
99 3. Configuring cpufreq-stats
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Duser-guide.txt32 3. How to change the CPU cpufreq policy and/or speed
43 The following ARM processors are supported by cpufreq:
54 The following processors for the x86 architecture are supported by cpufreq:
81 cpufreq:
96 framework are supported by cpufreq.
101 The following Blackfin processors are supported by cpufreq:
131 On all other cpufreq implementations, these boundaries still need to
139 3. How to change the CPU cpufreq policy and/or speed
146 mounted it at /sys, the cpufreq interface is located in a subdirectory
147 "cpufreq" within the cpu-device directory
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Dindex.txt24 cpu-drivers.txt - How to implement a new cpufreq processor driver
26 governors.txt - What are cpufreq governors and how to
45 * ftp://ftp.linux.org.uk/pub/linux/cpufreq/
51 * http://vger.kernel.org/vger-lists.html#cpufreq
Dcore.txt28 The CPUFreq core code is located in drivers/cpufreq/cpufreq.c. This
29 cpufreq code offers a standardized interface for the CPUFreq
40 which make sure that the cpufreq processor driver is correctly
98 dev_pm_opp_init_cpufreq_table - cpufreq framework typically is initialized with
103 providable to cpufreq.
Dintel-pstate.txt10 performance and powersave, that differ from the general cpufreq governors of
11 the same name (the general cpufreq governors implement target(), whereas the
19 itself. The driver provides the interfaces between the cpufreq core and
21 and reporting frequency to the cpufreq core. In this mode the
24 In addition to the interfaces provided by the cpufreq core for
Dboost.txt7 /sys/devices/system/cpu/cpufreq/boost
51 To allow the user to toggle the boosting functionality, the cpufreq core
53 /sys/devices/system/cpu/cpufreq/boost
55 The file is exported only when cpufreq driver supports boosting.
75 This switch was instantiated in each CPU's cpufreq directory
76 (/sys/devices/system/cpu[0-9]*/cpufreq) and was called "cpb".
Dgovernors.txt39 Most cpufreq drivers (except the intel_pstate and longrun) or even most
41 frequency. In order to offer dynamic frequency scaling, the cpufreq
48 That's done using "cpufreq governors". Two are already in this patch
54 around. Using such a generic interface as cpufreq offers to scaling
68 / the cpufreq governor decides
177 drivers/cpufreq/amd_freq_sensitivity.c is loaded, this parameter
263 per-CPU cpufreq lock is still held in the cpufreq core, and there's
267 every second), use cpufreq_driver_target to lock the cpufreq per-CPU
268 lock before the command is passed to the cpufreq processor driver.
Dcpu-drivers.txt38 add cpufreq support for this CPU / chipset? Great. Here are some hints
92 cpufreq driver registers itself, the per-CPU initialization function
151 Most cpufreq drivers or even most cpu frequency scaling algorithms
155 Some cpufreq-capable processors switch the frequency between certain
199 the reference implementation in drivers/cpufreq/longrun.c
223 As most cpufreq processors only allow for being set to a few specific
262 cpufreq-for_each_valid_entry(pos, table) - iterates over all entries,
Dcpufreq-nforce2.txt2 The cpufreq-nforce2 driver changes the FSB on nVidia nForce2 platforms.
Dpcc-cpufreq.txt2 * pcc-cpufreq.txt - PCC interface documentation
50 The PCC driver (pcc-cpufreq) allows OSPM to take advantage of the PCC
84 the native P-state driver (such as acpi-cpufreq for Intel, powernow-k8 for
133 pcc-cpufreq: (v1.00.00) driver loaded with frequency limits: 1600 MHz, 2933
/linux-4.4.14/arch/arm/mach-w90x900/
Dcpu.c125 static int __init nuc900_set_clkval(unsigned int cpufreq) in nuc900_set_clkval() argument
133 switch (cpufreq) { in nuc900_set_clkval()
176 unsigned long cpufreq, val; in nuc900_set_cpufreq() local
181 if (kstrtoul(str, 0, &cpufreq)) in nuc900_set_cpufreq()
186 nuc900_set_clkval(cpufreq); in nuc900_set_cpufreq()
/linux-4.4.14/Documentation/thermal/
Dcpu-cooling-api.txt18 1.1 cpufreq registration/unregistration APIs
22 This interface function registers the cpufreq cooling device with the name
23 "thermal-cpufreq-%x". This api can support multiple instances of cpufreq
31 This interface function registers the cpufreq cooling device with
32 the name "thermal-cpufreq-%x" linking it with a device tree node, in
34 instances of cpufreq cooling devices.
43 Similar to cpufreq_cooling_register, this function registers a cpufreq
58 cpufreq cooling device with power extensions using the device tree
63 This interface function unregisters the "thermal-cpufreq-%x" cooling device.
/linux-4.4.14/Documentation/arm/Samsung-S3C24XX/
DCPUfreq.txt25 need to register and the interface to the generic drivers/cpufreq
30 The core registers with drivers/cpufreq at init time if all the data
60 Each board that wants to use the cpufreq code must register some basic
/linux-4.4.14/Documentation/devicetree/bindings/thermal/
Ddb8500-thermal.txt33 trip0-cdev-name0 = "thermal-cpufreq-0";
38 trip1-cdev-name0 = "thermal-cpufreq-0";
/linux-4.4.14/arch/arm/boot/dts/
Dste-snowball.dts319 cpufreq-cooling {
324 cpufreq {
334 trip0-cdev-name0 = "thermal-cpufreq-0";
339 trip1-cdev-name0 = "thermal-cpufreq-0";
344 trip2-cdev-name0 = "thermal-cpufreq-0";
Dspear13xx.dtsi69 cpufreq {
70 compatible = "st,cpufreq-spear";
Dexynos5440.dtsi90 cpufreq@160000 {
91 compatible = "samsung,exynos5440-cpufreq";
Ddra74x.dtsi33 clock-latency = <300000>; /* From omap-cpufreq driver */
Dste-dbx5x0.dtsi494 cpufreq {
495 compatible = "stericsson,cpufreq-ux500";
1201 cpufreq-cooling {
1202 compatible = "stericsson,db8500-cpufreq-cooling";
Dexynos4210-origen.dts252 * but exynos-cpufreq does not support
Dexynos4210-trats.dts417 * but exynos-cpufreq does not support
Domap3.dtsi42 clock-latency = <300000>; /* From omap-cpufreq driver */
Dsun5i.dtsi164 * which has rate changes due to cpufreq
Dam33xx.dtsi65 clock-latency = <300000>; /* From omap-cpufreq driver */
Domap4.dtsi43 clock-latency = <300000>; /* From omap-cpufreq driver */
Dam4372.dtsi46 clock-latency = <300000>; /* From omap-cpufreq driver */
Domap5.dtsi55 clock-latency = <300000>; /* From omap-cpufreq driver */
Dsun6i-a31.dtsi243 * has rate changes due to cpufreq. Also the DMA
Dsun7i-a20.dtsi269 * which has rate changes due to cpufreq
/linux-4.4.14/tools/power/cpupower/debug/kernel/
DMakefile8 obj-m += cpufreq-test_tsc.o
/linux-4.4.14/Documentation/ABI/testing/
Dsysfs-devices-system-cpu129 What: /sys/devices/system/cpu/cpu#/cpufreq/*
147 What: /sys/devices/system/cpu/cpu#/cpufreq/freqdomain_cpus
154 That information may be hidden from the cpufreq core and the
157 power/performance results for platforms using acpi-cpufreq.
159 This file is only present if the acpi-cpufreq driver is in use.
182 What: /sys/devices/system/cpu/cpufreq/boost
/linux-4.4.14/Documentation/devicetree/bindings/arm/
Dkirkwood.txt11 In order to support the kirkwood cpufreq driver, there must be a node
/linux-4.4.14/Documentation/trace/
Devents-power.txt8 cpuidle (C-states) and cpufreq (P-states)
24 cpufreq.
/linux-4.4.14/Documentation/power/
Dopp.txt47 optionally boot at a certain OPP without needing cpufreq.
78 dependent subsystems such as cpufreq are left to the discretion of the SoC
80 care to refresh the cpufreq table in cases of these operations.
126 /* Do cpufreq things */
133 High level framework such as cpufreq operates on frequencies. To map the
245 Example: At a cpufreq transition to a different frequency, SoC
/linux-4.4.14/arch/arm/mach-shmobile/
DMakefile41 obj-$(CONFIG_CPU_FREQ) += cpufreq.o
/linux-4.4.14/arch/arm/configs/
Dneponset_defconfig18 CONFIG_CMDLINE="console=ttySA0,38400n8 cpufreq=221200 rw root=/dev/mtdblock2 mtdparts=sa1100:512K(b…
/linux-4.4.14/drivers/thermal/
DKconfig183 thermal framework. cpufreq is used as the cooling device to throttle
194 cpufreq is used as the cooling device to throttle CPUs when the
268 tristate "DB8500 cpufreq cooling"
273 Adds DB8500 cpufreq cooling devices, and these cooling devices can be
275 bound cpufreq cooling device turns active to set CPU frequency low to
/linux-4.4.14/Documentation/devicetree/bindings/clock/
Dmt8173-cpu-dvfs.txt15 - sram-supply: Regulator for Vsram of CPU cluster. When present, the cpufreq driver
/linux-4.4.14/Documentation/laptops/
Dlaptop-mode.txt193 or a value listed in /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies.
296 # /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
618 if [ $DO_CPU -eq 1 -a -e /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq ]; then
620 CPU_MAXFREQ=`cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq`
622 echo $CPU_MAXFREQ > /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
680 if [ $DO_CPU -eq 1 -a -e /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq ]; then
681 …echo `cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq` > /sys/devices/system/cpu/cpu0/cp…
/linux-4.4.14/arch/arm/mach-s3c24xx/
DMakefile40 obj-$(CONFIG_S3C2410_CPUFREQ_UTILS) += cpufreq-utils.o
DKconfig506 to the cpufreq driver.
/linux-4.4.14/arch/powerpc/boot/
Dops.h194 void dt_fixup_cpu_clocks(u32 cpufreq, u32 tbfreq, u32 busfreq);
/linux-4.4.14/drivers/mailbox/
DKconfig25 Management Engine, primarily for cpufreq. Say Y here if you want
/linux-4.4.14/drivers/
DMakefile120 obj-$(CONFIG_CPU_FREQ) += cpufreq/
/linux-4.4.14/arch/unicore32/
DKconfig197 source "drivers/cpufreq/Kconfig"
/linux-4.4.14/arch/avr32/
DKconfig254 source "drivers/cpufreq/Kconfig"
/linux-4.4.14/arch/cris/arch-v32/
DKconfig6 source drivers/cpufreq/Kconfig
/linux-4.4.14/drivers/xen/
DKconfig251 SMM so that other drivers (such as ACPI cpufreq scaling driver) will
/linux-4.4.14/arch/powerpc/platforms/
DKconfig209 source "drivers/cpufreq/Kconfig"
/linux-4.4.14/arch/sparc/
DKconfig262 source "drivers/cpufreq/Kconfig"
/linux-4.4.14/arch/ia64/
DKconfig556 source "drivers/cpufreq/Kconfig"
/linux-4.4.14/drivers/acpi/
DKconfig231 by several flavors of cpufreq performance-state, thermal, throttling and
/linux-4.4.14/arch/sh/
DKconfig591 source "drivers/cpufreq/Kconfig"
/linux-4.4.14/arch/arm64/
DKconfig802 source "drivers/cpufreq/Kconfig"
/linux-4.4.14/Documentation/RCU/
DRTFP.txt1609 ,Title="Re: [patch] cpufreq: mark \url{cpufreq_tsc()} as
1626 ,Title="Re: [patch] cpufreq: mark {\tt cpufreq\_tsc()} as
/linux-4.4.14/Documentation/
Dkernel-parameters.txt1134 arch/x86/kernel/cpu/cpufreq/elanfreq.c.
1573 in favor of acpi-cpufreq. Forcing the intel_pstate driver
1574 instead of acpi-cpufreq may disable platform features, such
1579 or on platforms that use pcc-cpufreq instead of acpi-cpufreq.
/linux-4.4.14/arch/blackfin/
DKconfig1426 source "drivers/cpufreq/Kconfig"
/linux-4.4.14/
DMAINTAINERS3011 F: drivers/cpufreq/
3012 F: include/linux/cpufreq.h
3020 F: drivers/cpufreq/arm_big_little.h
3021 F: drivers/cpufreq/arm_big_little.c
3022 F: drivers/cpufreq/arm_big_little_dt.c
5517 F: drivers/cpufreq/intel_pstate.c
7697 F: drivers/cpufreq/omap-cpufreq.c
9414 F: drivers/cpufreq/scpi-cpufreq.c
/linux-4.4.14/arch/arm/
DKconfig2047 source "drivers/cpufreq/Kconfig"
/linux-4.4.14/arch/mips/
DKconfig3011 source "drivers/cpufreq/Kconfig"
/linux-4.4.14/arch/x86/
DKconfig2301 source "drivers/cpufreq/Kconfig"