overlay_upda...e_references(9)

📦 version 7.3.1, in nixpkgs unstable

💅 overlay_update_local_node_references — Kernel API Manual (9)

okay so bestie, welcome to the overlay_update_local_node_references page 💖 this one lives in the Kernel API Manual, section 9, and it's lowkey a little baddie that fixes up your device tree overlay phandles so nothing clashes. let me walk you through it 🫶

✨ NAME ✨

overlay_update_local_node_references — Adjust the overlay references 💅

🌸 SYNOPSIS 🌸

int overlay_update_local_node_references (void *fdto , int tree_node ,
       int fixup_node , uint32_t delta );

🎀 ARGUMENTS 🎀

  • fdto — the device tree overlay blob, literally the whole vibe container 🦋
  • tree_node — node offset of the node we're gonna operate on, like the main character's address ✨
  • fixup_node — node offset of the matching local fixups node, its ride-or-die counterpart 💜
  • delta — the offset to shift the phandles by, aka how much we're nudging things 👑

🦋 DESCRIPTION 🦋

so overlay_update_local_nodes_references updates the phandles that point to a node inside the device tree overlay, and it does it by adding a constant delta to them. no cap, that's the whole move ✨

this is mainly used as part of a device tree application process — you know, the part where you want the device tree overlay's phandles to not conflict with the ones from the base device tree before merging them. it's giving pre-merge damage control and honestly? iconic 🙈💅

🌈 RETURN 🌈

  • 0 on success — slay 💖
  • Negative error code on failure — not slay 😭

⭐ SEE ALSO ⭐

Kernel file ./scripts/dtc/libfdt/fdt_overlay.c — go read the source, iykyk 🧚

okay that's the whole page bestie, go forth and update those references 💅✨ and yeah — this one's served fresh from ./scripts/dtc/libfdt, dated October 2026, filed under overlay_upda...e_references(9) 🎀🫶

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