# # For a description of the syntax of this configuration file, # see the file kconfig-language.txt in the NuttX tools repository. # menuconfig PM bool "Power management (PM) system" default n ---help--- Power management (PM) system. It consists of an OS interface to board logic which can be used to obtain a recommended power level according to a power management policy set by the currently chosen PM governor. It is also used by drivers which can allow or not a power level to be changed or not. if PM config PM_NDOMAINS int "Number of PM activity domains" default 1 ---help--- Defines the number of "domains" that the PM system can control. For example, you may want to separately manage the power from the Network domain, shutting down the network when it is not be used, from the UI domain, shutting down the UI when it is not in use. config PM_PROCFS bool "PM proc fs support" depends on FS_PROCFS_REGISTER ---help--- Enable procfs for pm. config PM_RUNTIME bool "PM runtime support" default n ---help--- Enable PM runtime that can suspend/resume device by driver when system is running. If the device is not used, you can use PM rutime interface to suspend the device. When the device is needed again, the driver can call the framework to wake up the device. config PM_GOVERNOR_GREEDY bool "Greedy governor" ---help--- This governor simply suggests the lowest-possible power state, considering any states locked by calls to pm_stay() (accessible via BOARDIOC_PM_STAY boardctl calls). config PM_GOVERNOR_ACTIVITY bool "Activity based" ---help--- The activity based governor receives activity reports from drivers in units which are accumulated during a certain time slice interval. The governor will then switch between power states given a set of activity thresholds for each state. menu "Governor options" config PM_GOVERNOR_EXPLICIT_RELAX int "Stay initially at PM_NORMAL" default 0 ---help--- If you boot into NSH, especially using the greedy PM governor, since NuttX will almost immediately go idle (when waiting for a prompt), the lowest possible run-level will be selected, which may not be desirable. This is not a problem if you directly run you application at boot, which can hold off power levels using pm_stay() (via boardctl). This option will initialize all run levels as if pm_stay/pm_staytimeout() were to be called once for each. if set to -1, that means pm_stay(), so that your application needs to call pm_relax() (via boardctl()) for every run-level you wish to allow to enter. if set to timeout (unit: ms), that means pm_staytimeout(ms). pm_relax() will be auto called after timeout. if PM_GOVERNOR_ACTIVITY config PM_GOVERNOR_SLICEMS int "PM time slice (msec)" default 100 ---help--- The power management module collects activity counts in time slices. At the end of the time slice, the count accumulated during that interval is applied to an averaging algorithm to determine the activity level. CONFIG_PM_GOVERNOR_SLICEMS provides the duration of that time slice in milliseconds. Default: 100 Milliseconds config PM_GOVERNOR_MEMORY int "PM memory (msec)" default 2 range 1 6 ---help--- The averaging algorithm is simply: Y = (An*X + SUM(Ai*Yi))/SUM(Aj), where i = 1..n-1 and j= 1..n, n is the length of the "memory", Ai is the weight applied to each value, and X is the current activity. These weights may be negative and a limited to the range of int16_t. CONFIG_PM_GOVERNOR_MEMORY provides the memory for the algorithm. Default: 2 CONFIG_PM_GOVERNOR_COEFn provides weight for each sample. Default: 1 Setting CONFIG_PM_GOVERNOR_MEMORY=1 disables all smoothing. config PM_GOVERNOR_COEFN int "PM coefficient" default 1 ---help--- See help associated with CONFIG_PM_GOVERNOR_MEMORY. config PM_GOVERNOR_COEF1 int "PM coefficient 1" default 1 ---help--- See help associated with CONFIG_PM_GOVERNOR_MEMORY. config PM_GOVERNOR_COEF2 int "PM coefficient 2" default 1 ---help--- See help associated with CONFIG_PM_GOVERNOR_MEMORY Ignored if CONFIG_PM_GOVERNOR_MEMORY <= 2 config PM_GOVERNOR_COEF3 int "PM coefficient 3" default 1 ---help--- See help associated with CONFIG_PM_GOVERNOR_MEMORY Ignored if CONFIG_PM_GOVERNOR_MEMORY <= 3 config PM_GOVERNOR_COEF4 int "PM coefficient 4" default 1 ---help--- See help associated with CONFIG_PM_GOVERNOR_MEMORY Ignored if CONFIG_PM_GOVERNOR_MEMORY <= 4 config PM_GOVERNOR_COEF5 int "PM coefficient 5" default 1 ---help--- See help associated with CONFIG_PM_GOVERNOR_MEMORY Ignored if CONFIG_PM_GOVERNOR_MEMORY <= 5 config PM_GOVERNOR_IDLEENTER_THRESH int "PM IDLE enter threshold" default 1 ---help--- State changes then occur when the weight activity account crosses threshold values for certain periods of time (time slice count). CONFIG_PM_xxxENTER_THRESH is the threshold value for entering state xxx. CONFIG_PM_xxxENTER_COUNT is the count for entering state xxx. Resuming to normal state, on the other hand, is usually immediate and controlled by wakeup conditions established by the platform. Default: <=1: Essentially no activity config PM_GOVERNOR_IDLEEXIT_THRESH int "PM IDLE exit threshold" default 2 ---help--- State changes then occur when the weight activity account crosses threshold values for certain periods of time (time slice count). CONFIG_PM_xxxENTER_THRESH is the threshold value for entering state xxx. CONFIG_PM_xxxENTER_COUNT is the count for entering state xxx. Resuming to normal state, on the other hand, is usually immediate and controlled by wakeup conditions established by the platform. Default: >=2: Active config PM_GOVERNOR_IDLEENTER_COUNT int "PM IDLE enter count" default 30 ---help--- State changes then occur when the weight activity account crosses threshold values for certain periods of time (time slice count). CONFIG_PM_xxxENTER_THRESH is the threshold value for entering state xxx. CONFIG_PM_xxxENTER_COUNT is the count for entering state xxx. Resuming to normal state, on the other hand, is usually immediate and controlled by wakeup conditions established by the platform. Default: Thirty IDLE slices to enter IDLE mode from normal config PM_GOVERNOR_STANDBYENTER_THRESH int "PM STANDBY enter threshold" default 1 ---help--- State changes then occur when the weight activity account crosses threshold values for certain periods of time (time slice count). CONFIG_PM_xxxENTER_THRESH is the threshold value for entering state xxx. CONFIG_PM_xxxENTER_COUNT is the count for entering state xxx. Resuming to normal state, on the other hand, is usually immediate and controlled by wakeup conditions established by the platform. Default: <=1: Essentially no activity config PM_GOVERNOR_STANDBYEXIT_THRESH int "PM STANDBY exit threshold" default 2 ---help--- State changes then occur when the weight activity account crosses threshold values for certain periods of time (time slice count). CONFIG_PM_xxxENTER_THRESH is the threshold value for entering state xxx. CONFIG_PM_xxxENTER_COUNT is the count for entering state xxx. Resuming to normal state, on the other hand, is usually immediate and controlled by wakeup conditions established by the platform. Default: >=2: Active config PM_GOVERNOR_STANDBYENTER_COUNT int "PM STANDBY enter count" default 50 ---help--- State changes then occur when the weight activity account crosses threshold values for certain periods of time (time slice count). CONFIG_PM_xxxENTER_THRESH is the threshold value for entering state xxx. CONFIG_PM_xxxENTER_COUNT is the count for entering state xxx. Resuming to normal state, on the other hand, is usually immediate and controlled by wakeup conditions established by the platform. Default: Fifty IDLE slices to enter STANDBY mode from IDLE config PM_GOVERNOR_SLEEPENTER_THRESH int "PM SLEEP enter threshold" default 1 ---help--- State changes then occur when the weight activity account crosses threshold values for certain periods of time (time slice count). CONFIG_PM_xxxENTER_THRESH is the threshold value for entering state xxx. CONFIG_PM_xxxENTER_COUNT is the count for entering state xxx. Resuming to normal state, on the other hand, is usually immediate and controlled by wakeup conditions established by the platform. Default: <=1: Essentially no activity config PM_GOVERNOR_SLEEPEXIT_THRESH int "PM SLEEP exit threshold" default 2 ---help--- State changes then occur when the weight activity account crosses threshold values for certain periods of time (time slice count). CONFIG_PM_xxxENTER_THRESH is the threshold value for entering state xxx. CONFIG_PM_xxxENTER_COUNT is the count for entering state xxx. Resuming to normal state, on the other hand, is usually immediate and controlled by wakeup conditions established by the platform. Default: >=2: Active config PM_GOVERNOR_SLEEPENTER_COUNT int "PM SLEEP enter count" default 70 ---help--- State changes then occur when the weight activity account crosses threshold values for certain periods of time (time slice count). CONFIG_PM_xxxENTER_THRESH is the threshold value for entering state xxx. CONFIG_PM_xxxENTER_COUNT is the count for entering state xxx. Resuming to normal state, on the other hand, is usually immediate and controlled by wakeup conditions established by the platform. Default: Fifty IDLE slices to enter SLEEP mode from STANDBY endif # PM_GOVERNOR_ACTIVITY endmenu endif # PM