142 lines
4.1 KiB
Plaintext
142 lines
4.1 KiB
Plaintext
# Copyright (c) 2014-2015 Wind River Systems, Inc.
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# Copyright (c) 2016 Intel Corporation
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# SPDX-License-Identifier: Apache-2.0
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menu "Power Management"
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config HAS_PM
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bool
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help
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This option must be selected by SoCs that provide PM hooks, that is,
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calls to configure low-power states.
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config PM
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bool "System Power Management"
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depends on SYS_CLOCK_EXISTS && HAS_PM
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help
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This option enables the board to implement extra power management
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policies whenever the kernel becomes idle. The kernel informs the
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power management subsystem of the number of ticks until the next kernel
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timer is due to expire.
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if PM
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module = PM
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module-str = System Power Management
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source "subsys/logging/Kconfig.template.log_config"
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config PM_STATS
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bool "System Power Management Stats"
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depends on STATS
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help
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Enable System Power Management Stats.
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config PM_S2RAM
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bool "Suspend-to-RAM (S2RAM)"
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depends on ARCH_HAS_SUSPEND_TO_RAM
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help
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This option enables suspend-to-RAM (S2RAM).
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config PM_S2RAM_CUSTOM_MARKING
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bool "Use custom marking functions"
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depends on PM_S2RAM
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help
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By default a magic word in RAM is used to mark entering suspend-to-RAM. Enabling
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this option allows custom implementation of functions which handles the marking.
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config PM_NEED_ALL_DEVICES_IDLE
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bool "System Low Power Mode Needs All Devices Idle"
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depends on PM_DEVICE && !SMP
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help
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When this option is enabled, check that no devices are busy before
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entering into system low power mode.
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choice PM_POLICY
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prompt "Idle State Power Management Policy"
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default PM_POLICY_DEFAULT
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help
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Select the idle state power management policy.
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config PM_POLICY_DEFAULT
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bool "Default PM policy"
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help
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This option selects the default PM policy. Default policy is based
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on CPU residency times and other constraints imposed by the drivers or
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application.
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config PM_POLICY_CUSTOM
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bool "Custom PM Policy"
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help
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This options allows applications to override the default policy with
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a custom implementation.
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endchoice
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endif # PM
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config PM_DEVICE
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bool "Device Power Management"
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help
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This option enables the device power management interface. The
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interface consists of hook functions implemented by device drivers
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that get called by the power manager application when the system
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is going to suspend state or resuming from suspend state. This allows
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device drivers to do any necessary power management operations
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like turning off device clocks and peripherals. The device drivers
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may also save and restore states in these hook functions.
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if PM_DEVICE
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module = PM_DEVICE
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module-str = Device Power Management
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source "subsys/logging/Kconfig.template.log_config"
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config PM_DEVICE_POWER_DOMAIN
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bool "Power domain"
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depends on PM_DEVICE
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default y
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help
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Enable support for Power Domain. With power domain enabled,
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devices that depend on a domain will be notified when this
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domain is suspended or resumed.
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config PM_DEVICE_POWER_DOMAIN_DYNAMIC
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bool "Dynamically bind devices to a Power Pomain"
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depends on PM_DEVICE_POWER_DOMAIN && DEVICE_DEPS_DYNAMIC
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help
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Enable support for dynamically bind devices to a Power Domain.
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config PM_DEVICE_POWER_DOMAIN_DYNAMIC_NUM
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int "Number of devices that can dynamically be bind to a Power Domain"
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depends on PM_DEVICE_POWER_DOMAIN_DYNAMIC
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default 1
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help
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The number of devices that can dynamically be bind to a Power Domain.
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config PM_DEVICE_RUNTIME
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bool "Runtime Device Power Management"
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select EVENTS
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help
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Enable Runtime Power Management to save power. With device runtime PM
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enabled, devices can be suspended or resumed based on the device
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usage even while the CPU or system is running.
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config PM_DEVICE_RUNTIME_EXCLUSIVE
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depends on PM_DEVICE_RUNTIME
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bool "Use only on Runtime Power Management on system suspend / resume"
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default y
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help
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On system suspend / resume do not trigger the Device PM hooks but
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only rely on Runtime PM to manage the devices power states.
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config PM_DEVICE_SHELL
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bool "Device Power Management shell"
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depends on SHELL
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help
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Enable the device power management shell, for triggering device power
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management events through the shell interface.
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endif # PM_DEVICE
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endmenu
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