Device tree

A device tree is like a road map for a computer. Imagine you're trying to navigate your way around a big city – if you didn't have a road map, you might get lost or waste a lot of time going down the wrong streets. Similarly, a device tree helps a computer figure out what hardware is attached to it.

When you turn on your computer, it needs to know what hardware is connected to it – things like the screen, the keyboard, the mouse, and the various chips and circuit boards inside. Without this information, the computer wouldn't know how to talk to these devices or how to use them.

The device tree is a file that tells the computer what hardware it's connected to. It's like a list of all the devices plugged into your computer – it tells the computer what they are, what they can do, and how to talk to them.

For example, if you have a USB mouse plugged into your computer, the device tree will tell the computer that there's a mouse connected, and what type of mouse it is. It will also tell the computer how to send signals to the mouse, so it knows when you're moving it or clicking its buttons.

In some ways, the device tree is like a blueprint for your computer. When the computer starts up, it reads the device tree and uses that information to figure out what hardware it has and how to use it. This helps the computer run smoothly and efficiently, and makes it easier for you to use all the devices connected to it.