platform_dev...ode_from_dev(9)

💅 platform_dev...ode_from_dev(9) — a Kernel API Manual moment ✨

okay so bestie, welcome to platform_dev...ode_from_dev(9) from the Kernel API Manual — yes the title is literally abbreviated with dots, that's just how it's filed, we don't ask questions, we stan anyway 🎀

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✨ NAME ✨

platform_device_set_of_node_from_dev — reuse the OF node of another device, no cap 🦋

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🌸 SYNOPSIS 🌸

void platform_device_set_of_node_from_dev (struct platform_device *pdev
, const struct device *dev2 );

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🎀 ARGUMENTS 🎀

• pdev — the platform device you're setting the node for, she's the main character here 👑
• dev2 — the device whose OF node you're reusing, borrowing her fit, iconic behaviour 💅

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💖 DESCRIPTION 💖

So what this does is it reuses the OF node of another device inside this platform device, and internally it keeps track of the reference counting the whole time — like, it's literally doing the bookkeeping for you, no notes 🫶

⚠️ major vibe check: this function must not be called for a platform device that already has a software node assigned as its primary firmware node. just… don't. fr fr 😭

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🌈 SEE ALSO 🌈

Kernel file ./drivers/base/platform.c and the whole friend group:

• platform_get_resource(9)
• devm_platform_get_and_ioremap_resource(9)
• devm_platform_ioremap_resource(9)
• devm_platform_ioremap_resource_byname(9)
• platform_get_irq_affinity(9)
• platform_get_irq_optional(9)
• platform_get_irq(9)
• platform_irq_count(9)
• devm_platform_get_irqs_affinity(9)
• platform_get_resource_byname(9)
• platform_get_irq_byname(9)
• platform_get_irq_byname_optional(9)
• platform_add_devices(9)
• platform_device_put(9)
• platform_device_alloc(9)
• platform_device_add_resources(9)
• platform_device_add_data(9)
• platform_device_set_of_node(9)
• platform_device_set_fwnode(9)
• platform_device_add(9)
• platform_device_del(9)
• platform_device_register(9)
• platform_device_unregister(9)
• platform_device_register_full(9)
• __platform_driver_register(9)
• platform_driver_unregister(9)
• __platform_driver_probe(9)
• __platform_create_bundle(9)
• __platform_register_drivers(9)
• platform_unregister_drivers(9)
• platform_match(9)
• platform_find_device_by_driver(9)

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and that's the whole page, bestie 🧚💜 it comes to us from ./drivers/base, dated October 2026, and it's filed under that same platform_dev...ode_from_dev(9) name at the top and the bottom, which is giving bookends, honestly 💅✨ go set some nodes, periodt 🔥