devm_of_clk_add_hw_provider(9)

📦 version 7.3.1, in nixpkgs unstable

💅 devm_of_clk_add_hw_provider(9) — like, the whole glow-up guide

okay so bestie, we're in the Kernel API Manual (that's the manual name, mwah) and today's main character is devm_of_clk_add_hw_provider(9). Buckle up, it's giving "clock provider registration but make it managed" 💖

✨ NAME ✨

devm_of_clk_add_hw_provider — managed clk provider node registration 🎀

🌸 SYNOPSIS 🌸

int devm_of_clk_add_hw_provider (struct device *dev , struct clk_hw
*(*get)(struct of_phandle_args *clkspec, void *data) , void *data );

yes it's a whole mouthful, no I will not be apologising 💀

🦋 ARGUMENTS 🦋

  • dev — the Device that's acting as the clock provider. it's the one used for the DT node and for the lifetime, so like... it's kind of the whole personality here 🫶
  • get — the callback for decoding clk_hw. your little decoder ring 🔥
  • data — context pointer for the get callback. it's giving "bring your own vibes" 🙈

💜 DESCRIPTION 💜

So what's the tea ☕: this registers a clock provider for the given device's node.

And here's the plot twist — if the device has no DT node, or if the device node is missing its clock provider info (#clock-cells), then the parent device's node gets scanned for that info instead. And if the parent node does have #clock-cells, that's the one used in registration. iconic inheritance behaviour, honestly 👑

And the best part? The provider is automatically released at device exit. no manual cleanup, no messy breakup, devm said "i gotchu" ✨

🌈 RETURN 🌈

0 on success, or an errno on failure. simple as that, bestie 💅

🎀 SEE ALSO 🎀

like a whole friend group, fr fr. the kernel file is ./drivers/clk/clk.c and here's everybody:

ngl that's a long list but every single one of them is a real one, no cap. go read them, i'll wait 💖

and that's the page!! 🧚 from ./drivers/clk, dated October 2026, and the header's name is devm_of_clk_add_hw_provider(9) in case you forgot already 😭 love u, go register some clocks responsibly, periodt 💅💖

📦 where this page comes from