dfll_register_clk(9)

📦 version 7.3.1, in nixpkgs unstable

💅 dfll_register_clk(9) — like, the Kernel API Manual entry, bestie

okay so this is section 9 of the Kernel API Manual, and the star of the show is dfll_register_clk — say it with me, it's giving "the DFLL finally gets introduced to the clock framework" energy ✨

🌸 NAME 🌸

dfll_register_clk — registers the DFLL's output clock with the clock framework. that's it, that's the whole job, and she does it flawlessly 🎀

🦋 SYNOPSIS 🦋

int dfll_register_clk (struct tegra_dfll *td );

💖 ARGUMENTS 💖

  • td — the DFLL instance. your one and only param, your main character 🫶

🔥 DESCRIPTION 🔥

okay so picture this: you've got the DFLL, right? and you've got the Linux clock framework. and these two? they have not met yet. not on your watch.

dfll_register_clk registers the DFLL's output clock with the Linux clock framework, and — this is the iconic part — it also registers the DFLL driver as an OF clock provider. no cap, that's the whole glow-up 🌈

it returns 0 upon success. and if things go sideways? you're getting -EINVAL or -ENOMEM upon failure. those are the only two failure flavors, bestie, memorize them 💀

⭐ SEE ALSO ⭐

so many siblings, so little time. all of these live in the Kernel file ./drivers/clk/tegra/clk-dfll.c 👑

🧚 and if dfll_register_clk is your fave, the matching breakup anthem is dfll_unregister_clk(9). iykyk 💅

and that's the page, bestie! this one's from ./drivers/clk/tegra, dated October 2026 — periodt, go register some clocks 💜 🍓

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