devm_clk_ge...onal_enabled(9)

📦 version 7.3.1, in nixpkgs unstable

🎀 devm_clk_ge...onal_enabled(9) 🎀

okay so we're deep in the Kernel API Manual bestie, and this one is a whole vibe — it's the "just grab me a clock and turn it on, and if there isn't one, honestly whatever" function. devm energy, optional energy, enabled energy. it's giving main character. 💅

✨ NAME ✨

devm_clk_get_optional_enabled — literally devm_clk_get_optional() + clk_prepare_enable() and nothing else, no cap 🫶

🌸 SYNOPSIS 🌸

struct clk * devm_clk_get_optional_enabled (struct device *dev , const
char *id );

💖 ARGUMENTS 💖

  • dev — the device that's being the clock "consumer" here, okay? it's the one doing the consuming 🍓
  • id — the clock consumer ID, aka how we know which clock this consumer means 👑

🦋 CONTEXT 🦋

May sleep. 😴 like fr fr, this one is allowed to nap, so don't go calling it from somewhere sleepy is forbidden.

🌈 RETURN 🌈

you get back a struct clk that corresponds to the clock producer, or a valid IS_ERR condition containing errno 😭

and the way it works: the implementation uses dev and id to figure out the clock consumer, and thereby the clock producer. iconic behavior honestly.

now here's the twist 👀 — if no such clk is found, it returns NULL, which serves as a dummy clk. and that's the only difference compared to devm_clk_get_enabled. literally the only one. periodt.

⭐ DESCRIPTION ⭐

the returned clk (if it's valid, which, vibe check first pls) is prepared and enabled. yes both. we went all the way. 🔥

and because it's a devm function, the clock will automatically be disabled, unprepared and freed when the device is unbound from the bus. no manual cleanup era needed, she cleans up after herself 🧚

👑 SEE ALSO 👑

Kernel file ./include/linux/clk.h

ok bestie that's the whole page, go forth and enable your clocks responsibly 💜

and finally, mwah, this lil page lives in ./include/linux and it's dated October 2026 — that's the whole footer era, consider yourself signed off 🫶✨🎀

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