[Verse 1] Your hardware's fixed, the device tree's set in stone But what if you need changes when the system's grown A new sensor here, a driver there to load Without rebuilding everything, there's gotta be a road [Chorus] Overlay, overlay, patch it on the fly Dynamic modifications reaching for the sky Fragment by fragment, we build what we need Device tree overlays plant the changing seed O-V-E-R-L-A-Y, that's the way we modify [Verse 2] Start with fragment syntax, target what you want Reference by phandle or the path you'll haunt Compatible strings tell us what device Properties and child nodes, everything's precise [Chorus] Overlay, overlay, patch it on the fly Dynamic modifications reaching for the sky Fragment by fragment, we build what we need Device tree overlays plant the changing seed O-V-E-R-L-A-Y, that's the way we modify [Bridge] Enable at runtime with a simple write Configfs makes it easy, bringing nodes to light Cape manager handles all the complex parts Board detection triggers when the magic starts [Verse 3] Testing new hardware without recompiling Hot-swappable modules keep your system styling Version conflicts handled with a graceful fall Overlay priorities answer every call [Chorus] Overlay, overlay, patch it on the fly Dynamic modifications reaching for the sky Fragment by fragment, we build what we need Device tree overlays plant the changing seed O-V-E-R-L-A-Y, that's the way we modify [Outro] From BeagleBone capes to Raspberry Pi hats Dynamic device trees where flexibility's at No more static limits holding back your dreams Overlay magic powers up your embedded schemes
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