Intel® SoC FPGA Embedded Development Suite User Guide

ID 683187
Date 8/07/2020
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11. Linux* Device Tree Generator

A device tree is a data structure that describes the underlying hardware to an operating system - primarily Linux*. By passing this data structure to the OS kernel, a single OS binary may be able to support many variations of hardware. This flexibility is particularly important when the hardware includes an FPGA.

The Linux* Device Tree Generator (DTG) tool is part of SoC EDS and is used to create Linux* device trees for the Cyclone® V SoC, Arria® V SoC, and Intel® Arria® 10 SoC systems that contain FPGA designs created using Platform Designer. The generated device tree describes the HPS peripherals, selected FPGA Soft IP, and peripherals that are board dependent. The Intel® Arria® 10 SoC Bootloader also has an associated Device Tree called Bootloader Device Tree that is created and managed by the BSP Editor tool.

Warning: The Linux* Device Tree Generator is obsolete and does not support Intel® Stratix® 10 SoC and newer devices. However, it is tested with and supports only the Linux* kernel version targeted by the associated GSRD. Intel® does not recommend that you use the Linux* Device Tree Generator if your design targets a different Linux* kernel version. Instead, Intel® recommends that you manage the Device Tree manually by using the Device Tree files provided by the kernel as a baseline, and by adding the FPGA IP and board information manually.

Refer to HOWTOCreateADeviceTree, which supports all kernels.