aio_chip_set_pll(9)

📦 version 7.3.1, in nixpkgs unstable

💖 aio_chip_set_pll(9) 💖

okay so this is a page from the Kernel API Manual, and bestie, it's a short one but it's a baddie. we're setting the frequency on the audio PLL. that's it, that's the vibe. let's get into it ✨

🎀 NAME 🎀

aio_chip_set_pll — set frequency to audio PLL 💅

✨ SYNOPSIS ✨

int aio_chip_set_pll (struct uniphier_aio_chip *chip , int pll_id ,
unsigned int freq );

literally the whole signature, no notes, she ate 🫶

🌸 ARGUMENTS 🌸

  • chip — the AIO chip pointer 👑 like, the main character struct itself
  • pll_id — PLL 🔥 which one we're talking to
  • freq — frequency in Hz, and ngl 0 is ignored 🙈 (yeah, zero just gets skipped, don't come for her)

🦋 DESCRIPTION 🦋

Sets the frequency of the audio PLL. periodt 💜

the cute part: this function can be called anytime — no gatekeeping, no special window, call it whenever. but ⚠️ it takes time till the PLL is locked. so like, don't expect it to be instantly locked and ready, she needs a minute to settle. lowkey important, don't ignore that part fr fr 😭

⭐ RETURN ⭐

  • Zero if successful 🎉
  • otherwise a negative value on error 💀

so yeah, check your return value, bestie, it's giving "trust but verify" 🌈

🔥 SEE ALSO 🔥

Kernel file ./sound/soc/uniphier/aio-core.c 💖 plus the whole friend group:

like a whole group chat of audio functions, iykyk 💅

reminder bestie: freq of 0 gets ignored, and the PLL lock isn't instant — those are the two things you'll actually trip over 🍓

and that's the page!! brought to you by the source/version <rainbow>./sound/soc/uniphier</rainbow>, dated <bold>October 2026</bold> 📅💜 mwah, go lock that PLL, you got this 🧚✨

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