of_get_flat_...node_by_name(9)

✨ of_get_flat_...node_by_name(9) — Kernel API Manual ✨

okay bestie, welcome to the of_get_flat_...node_by_name(9) page 💅 (yes the title is doing the absolute most with those dots, but we move). This is the Kernel API Manual, and honestly? It's a little one, but it's a useful one. Let's get into it 🫶

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🌸 NAME 🌸

of_get_flat_dt_subnode_by_name — grab the subnode by the name you give it 🎀

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✨ SYNOPSIS ✨

int of_get_flat_dt_subnode_by_name (unsigned long node , const char
*uname );

so it takes two things and it gives you back an int, that's the whole vibe ✨

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🦋 ARGUMENTS 🦋

• node — the parent node 💖 like, the one you're browsing from, the main character of this operation
• uname — the name of the subnode 🔍 and psst, this line is also where they tuck the return info: it returns the offset of the subnode, or -FDT_ERR_NOTFOUND if there is none 😭 no subnode bestie, no offset

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👑 SEE ALSO 👑

the kernel file lives at ./drivers/of/fdt.c and here's the 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(9)
• of_scan_flat_dt_subnodes(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)

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okay that's the page!! short and sweet, just like this function 🍓

little sign-off from me to you: this one came from ./drivers/of, dated October 2026, and it's filed under of_get_flat_...node_by_name(9) — periodt. go read some device tree code now, ily 💜🧚