[Verse 1] Back in the day when embedded code was young Hardware descriptions were hardcoded and strung Platform data baked right into the kernel space Every board change meant recompiling the whole place Drivers couldn't adapt, couldn't flex or bend Maintenance nightmares that would never end [Chorus] Device trees describe the hardware scene Hardware description language clean D-T-S files tell the kernel what's there Properties and nodes everywhere No more hardcode, platform free Device trees are the master key [Verse 2] Picture your system as a family tree Components connected hierarchically Each node contains the hardware facts Memory ranges and interrupt pacts Compatible strings identify the part While properties define each hardware heart [Chorus] Device trees describe the hardware scene Hardware description language clean D-T-S files tell the kernel what's there Properties and nodes everywhere No more hardcode, platform free Device trees are the master key [Bridge] Bootloader passes the flattened tree To kernel space for all to see GPIO pins and clock domains I-two-C buses and memory planes One kernel binary rules them all Device trees handle each hardware call [Verse 3] When you need to port to different boards Device trees speak in common words Change the tree but keep the driver Hardware abstraction keeps code lighter Source becomes binary blob to load Describing every hardware node [Chorus] Device trees describe the hardware scene Hardware description language clean D-T-S files tell the kernel what's there Properties and nodes everywhere No more hardcode, platform free Device trees are the master key [Outro] From chaos to order, the embedded way Device trees guide us to a brighter day
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