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