Getting Started With Zephyr: Devicetrees
This blog post provides an introduction to the "Devicetree", another unique concept in The Zephyr Project. We learn about the basic syntax of a device tree and how its structure and hierarchy mirror hardware, from the SoC to the final board. We also see how hardware described in a devicetree can be referenced and controlled in the source code of a Zephyr-based application.
Summary
This blog post introduces Zephyr's Device Tree system, explaining the basic DTS syntax and how the tree mirrors hardware from SoC to board. Readers will learn how devices described in a devicetree are exposed to and referenced by Zephyr applications.
Key Takeaways
- Understand core devicetree syntax: nodes, properties, labels, and phandles.
- Map hardware hierarchy to DTS structure from SoC through board-level nodes.
- Reference devices in Zephyr code using DT macros and generated bindings.
- Apply device tree overlays and board DTS to modify hardware descriptions safely.
Who Should Read This
Firmware engineers and embedded developers (beginner-to-intermediate) performing board bring-up, writing drivers, or learning how Zephyr represents and exposes hardware in code.
Still RelevantBeginner
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