What is device tree compiler?

A device tree (DT) is a data structure of named nodes and properties that describe non-discoverable hardware. Operating systems, such as the Linux kernel used in Android, use DTs to support a wide range of hardware configurations used by Android-powered devices.

What is DTB and DTS?

DTB files are just a binary representation of DTS file (just like serializing an XML) which helps the kernel to the devices available on the architecture and their configuration. This helps to have a kernel source less dependent on the hard configuration.

What is DTC compiler?

dtc (Device Tree Compiler) – converts between the human editable device tree source “dts” format and the compact device tree blob “dtb” representation usable by the kernel or assembler source. dtc is also a dtb decompiler. The linux version of dtc is located in scripts/dtc/ in the kernel source directory.

What is Dtsi file?

dtsi files are device tree source include files. They describe hardware that is common to several platforms which include these files on their *. dts files. *. dts files are device tree source files.

What is meant by device tree?

Device tree is a way of describing hardware and configuration information for boards. The device tree is a data structure for dynamically describing hardware using a Device Tree Source (DTS) data structure language, instead of hard coding every detail of a board’s hardware into the operating system.

What is a DTB?

The DTB is a database that represents the hardware components on a given board. It is derived from the IBM OpenFirmware specifications and has been chosen as the default mechanism to pass low-level hardware information from the bootloader to the kernel.

How do device trees work?

A device tree is a tree structure used to describe the physical hardware in a system. Each node in the tree describes the characteristics of the device being represented. For example, a PCI host may be able to probe and detect attached devices; and so a device tree node describing PCI devices may not be required.

What is DTS and Dtsi?

DTS and DTSI files refer to each other using include statements. This allows the reuse of pre-existing device tree nodes. A board-00 DTS file includes the relevant board DTSI file, which includes the relevant chip-specific DTSI file, which in turn includes the relevant SoC DTSI file. Example: Platform Common DTSI.

What is a device tree?

Device tree. In computing, a device tree (also written devicetree) is a data structure describing the hardware components of a particular computer so that the operating system’s kernel can use and manage those components, including the CPU or CPUs, the memory, the buses and the peripherals.

What is the use of flattened device tree?

The format of the data in the.dtb blob file is commonly referred to as a Flattened Device Tree (FDT). The Linux operating system uses the device tree data to find and register the devices in the system.

What is DTS file in Linux?

Linux Device Tree source. A dts file extension is related to the Device Tree Specification, a data format used to describe hardware.

What is a device tree blob?

The device tree blob is “compiled” by a special compiler that produces the binary in the proper form for U-Boot and Linux to understand. The dtc compiler usually is provided with your embedded Linux distribution, or it can be found at http://jdl.com/software.