Linux kernel regulator subsystem (startup process)
The Linux regulator subsystem is a framework for managing power that allows the kernel to control and monitor power in the system. This subsystem provides a standardized interface that enables device drivers to request and control power to optimize system power consumption.
In the Linux kernel, each power supply is represented as a regulator object. These objects contain information such as the name of the power supply, voltage, current, and power supply status. Drivers can request and control power by calling the regulator API.
The Linux regulator subsystem also provides some special regulator types, such as fixed regulator and linear regulator. A fixed regulator is a fixed voltage power supply whose voltage is not adjustable. The linear regulator is an adjustable voltage power supply, which can adjust the output voltage as needed.
In the Linux kernel, the implementation of the regulator subsystem is composed of a core framework and a series of drivers. Drivers are responsible for interacting with the hardware, and the core framework is responsible for managing and scheduling these drivers.
In general, the Linux regulator subsystem is a very important power management framework, which can help developers optimize system power consumption, thereby improving system performance and stability.
提示：上一篇简单讲述内核设备树中电源的注册和引用，本篇讲讲内核电源驱动。