devm_of_phy_get_by_index(9)

💖 devm_of_phy_get_by_index(9) 💖

okay so welcome to the Kernel API Manual, bestie — buckle up, this one's short but she's mighty 🦋

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✨ NAME ✨

devm_of_phy_get_by_index — lookup and obtain a reference to a phy by index 🎀

like, you point at a phy by its number and it hands you a ref. that's the whole vibe check.

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🌸 SYNOPSIS 🌸

struct phy * devm_of_phy_get_by_index (struct device *dev , struct device_node *np , int index );

yep, that's the whole signature — three args, one struct phy * coming back at you 💅

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🫶 ARGUMENTS 🫶

• dev — the device that requests this phy. she's the one asking, so she gets associated with the result ✨
• np — the node containing the phy. this is where we go looking for it 🔍
• index — index of the phy. literally just which one you want, by number 🔢

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💀 DESCRIPTION 💀

so here's what actually happens, fr fr:

it gets the phy using _of_phy_get, then it gets a refcount to it, then it associates a device with it using devres. that's three whole steps, she's working 💅

and the iconic part? on driver detach, the release function is invoked on the devres data, and then the devres data is freed. automatic cleanup, no leaks, no manual phy_put panic at 3am — that's the devm main character energy right there 👑

no cap, the "devm" in the name is doing a LOT of heavy lifting here. it's giving "I'll handle it for you, bestie" 🫶

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🔥 SEE ALSO 🔥

kernel file ./drivers/phy/phy-core.c, and literally the whole phy friend group:

phy_create_lookup(9), phy_remove_lookup(9), phy_init(9), phy_exit(9), phy_power_on(9), phy_power_off(9), phy_calibrate(9), phy_notify_connect(9), phy_notify_disconnect(9), phy_notify_state(9), phy_configure(9), phy_validate(9), _of_phy_get(9), of_phy_get(9), of_phy_put(9), phy_put(9), devm_phy_put(9), of_phy_simple_xlate(9), phy_get(9), devm_phy_get(9), devm_phy_optional_get(9), devm_of_phy_get(9), devm_of_phy_optional_get(9), phy_create(9), devm_phy_create(9), phy_destroy(9), devm_phy_destroy(9), __of_phy_provider_register(9), __devm_of_phy_provider_register(9), of_phy_provider_unregister(9), devm_of_phy_provider_unregister(9), phy_release(9)

go read them all, i'll wait 💜

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alright babe, that's the page 🌈 — brought to you from ./drivers/phy, dated October 2026, straight out of the Kernel API Manual. mwah 💋 go get that phy 🧚‍♀️✨