of_fdt_is_compatible(9)

💖 of_fdt_is_compatible(9) 💖

okay so bestie, welcome to the of_fdt_is_compatible(9) page — it lives in the Kernel API Manual and honestly it's giving tiny-but-mighty energy. it does exactly one thing and it does it well: it tells you whether a given node (from a given blob) has your compat string chilling in its compatible list. that's it. that's the whole personality. 🎀

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✨ NAME ✨

of_fdt_is_compatible — return true if the given node from the given blob has compat in its compatible list. no cap, that's literally the job 💅

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🌸 SYNOPSIS 🌸

int of_fdt_is_compatible (const void *blob , unsigned long node , const
char *compat );

like… it's a function. it takes three things. it returns an int. we love a low-drama signature 🫶

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🦋 ARGUMENTS 🦋

• blob — a device tree blob. yes, the whole blob. it's the vibe provider for everything else here 💖
• node — the node to test. this is the one we're putting under the microscope, slay 🔍
• compat — the compatible string to compare with the compatible list. this is your search term, your main character string 👑

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⭐ RETURN ⭐

it returns a non-zero value on match — and here's the cute part: smaller values are returned for more specific compatible values. so the number isn't just "yes", it's "yes and here's how specific it is". iykyk 🌈

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🧚 SEE ALSO 🧚

okay this list is lowkey a whole friend group, get comfy:

• Kernel file ./drivers/of/fdt.c — 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_get_flat_dt_subnode_by_name(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)

go read them. they're all iconic in their own way, fr fr 👑💜

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💀 reminder that this page is sourced from ./drivers/of — that's where all the flat-device-tree lore lives 🍓

and that's a wrap bestie!! this one's dated October 2026, sourced from ./drivers/of, and yes the page name is literally of_fdt_is_compatible(9) — drink some water, go read ./drivers/of/fdt.c, and slay your device tree 💅✨🎀