config RT_USING_PM
    bool "Using Power Management device drivers"
    default n
    help
      Enable the system-level power management framework which coordinates
      suspend/resume, tickless idle, and device low-power states. Required when
      implementing sleep modes beyond simple tick suppression.

    if RT_USING_PM
        config PM_TICKLESS_THRESHOLD_TIME
            int "PM tickless threashold time"
            default 2
            help
              Minimum idle duration (in milliseconds) before the PM core enters
              tickless mode. Tune based on wake-up latency vs power savings.

        config PM_USING_CUSTOM_CONFIG
            bool "PM using custom pm config"
            default n
            help
              Allow BSPs to provide custom PM policy hooks instead of the stock
              configuration.

        config PM_ENABLE_DEBUG
            bool "PM Enable Debug"
            default n
            help
              Print suspend/resume decisions and timing for debugging purposes.

        config PM_ENABLE_SUSPEND_SLEEP_MODE
            bool "PM Device suspend change sleep mode"
            default n
            help
              Permit PM to change system sleep mode dynamically when devices
              suspend; requires board support.

        config PM_ENABLE_THRESHOLD_SLEEP_MODE
            bool "PM using threshold time change sleep mode"
            default n
            help
              Automatically select light/deep/standby sleep based on idle time
              thresholds configured below.

        if PM_ENABLE_THRESHOLD_SLEEP_MODE
            config PM_LIGHT_THRESHOLD_TIME
                int "PM light mode threashold time"
                default 5
                help
                  Idle time in milliseconds required before entering light sleep.

            config PM_DEEP_THRESHOLD_TIME
                int "PM deep mode threashold time"
                default 20
                help
                  Idle duration required before requesting deep sleep.

            config PM_STANDBY_THRESHOLD_TIME
                int "PM standby mode threashold time"
                default 100
                help
                  Idle time before transitioning into standby (longest latency)
                  mode. Increase if standby exit is expensive.
        endif
    endif