Linux Kernel Power Management for Embedded Systems

A practical guide to understanding Linux kernel power management architecture for embedded systems.Linux Kernel Power Management for Embedded Systems provides a comprehensive introduction to how the Linux kernel manages power in modern embedded platforms.Power efficiency is a critical requirement for embedded devices, including mobile systems, IoT platforms, and automotive systems. The Linux kernel includes multiple power management frameworks designed to control CPU activity, device states, clocks, and power domains. However, understanding how these subsystems interact can be challenging for engineers working with embedded Linux.This book explains the architecture and internal mechanisms of Linux kernel power management with a focus on practical understanding. It introduces the core frameworks used in embedded systems and describes how they cooperate to reduce power consumption while maintaining system responsiveness.Topics covered include:Fundamentals of power consumption in embedded systemsLinux kernel power management architectureClock framework and regulator frameworkCPU frequency scaling (CPUFreq) and thermal managementCPU hotplug and CPU idle power statesRuntime power management and device power controlSystem suspend mechanismsARM System Control and Management Interface (SCMI)Through clear explanations of kernel frameworks and subsystem interactions, this book helps embedded engineers and kernel developers understand how Linux implements power management and how these mechanisms are applied in real embedded systems.Who this book is forEmbedded Linux engineersKernel developersSoC and platform engineersEngineers working on power optimization in embedded systems Read more