of_scan_flat_dt(9)

🌸 NAME 🌸

of_scan_flat_dt — bestie, this one scans the flattened tree blob and hits up your callback on each node 💅 (we're in the Kernel API Manual, in case the vibe check needed a label ✨)

🎀 SYNOPSIS 🎀

int of_scan_flat_dt (int (*it)(unsigned long node, const char *uname,
int depth, void *data) , void *data );

🦋 ARGUMENTS 🦋

• it — the callback function, aka the little guy that gets called for every node 🫶
• data — the context data pointer, your emotional support pointer, passed right along 😌

💖 DESCRIPTION 💖

Okay so real talk: this function is for scanning the flattened device-tree ✨. It exists so you can yank the memory information out at boot, before we're even allowed to unflatten the tree 😭 like the tree's still flat, the info's still in there, and of_scan_flat_dt is the one who goes and gets it. Main character energy, no cap 👑.

It literally calls your callback on each node it finds. That's it. That's the whole gig. Slay 💅.

🌈 SEE ALSO 🌈

Kernel file ./drivers/of/fdt.c and its whole friend group 🫶 — go say hi:

• unflatten_dt_nodes(9)
• __unflatten_device_tree(9)
• of_fdt_unflatten_tree(9)
• early_init_fdt_scan_reserved_mem(9)
• early_init_fdt_reserve_self(9)
• of_scan_flat_dt_subnodes(9)
• of_get_flat_dt_subnode_by_name(9)
• of_fdt_is_compatible(9)
• of_flat_dt_is_compatible(9)
• of_flat_dt_match_machine(9)
• early_init_dt_check_for_initrd(9)
• early_init_dt_check_for_elfcorehdr(9)
• early_init_dt_check_for_usable_mem_range(9)
• early_init_dt_check_kho(9)
• unflatten_device_tree(9)
• unflatten_and_copy_device_tree(9)

okay that's the whole page, bestie, ily, go scan some trees 🌳✨ — this masterpiece lives in ./drivers/of, dated October 2026, and it's signed off with a kiss 💋 🎀 periodt 💖