[Verse 1] When your system's running hot and the battery's drain is fast You need power management to make your energy last Check the thermal sensors, watch the temperature climb Dynamic frequency scaling keeps you running on time [Chorus] Scale it down, shut it off, wake it up on demand DVFS and sleep states working hand in hand P-states for performance, C-states for the rest Power management makes your system run its best [Verse 2] Clock domains can be gated when the work is finally done Peripheral shutdown saves the power one by one USB controllers sleeping, network cards at rest Only keep what's needed, let the system do its best [Chorus] Scale it down, shut it off, wake it up on demand DVFS and sleep states working hand in hand P-states for performance, C-states for the rest Power management makes your system run its best [Bridge] Interrupt service routines bring the hardware back to life GPIO pins and timers cut through sleep like a knife Wake-up events are queued up, ready when you need Race conditions managed with millisecond speed [Verse 3] Voltage islands isolated, power rails switched off clean Retention mode for memory, the leanest you've ever seen Thermal throttling kicks in when the heat becomes too much Governor policies balance every power-saving touch [Chorus] Scale it down, shut it off, wake it up on demand DVFS and sleep states working hand in hand P-states for performance, C-states for the rest Power management makes your system run its best [Outro] From active to idle to suspend and hibernate Every watt is precious, don't let energy dissipate Battery life extended, thermal limits never crossed Power management wisdom means no energy is lost
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