wm8960_configure_pll(9)

💖 wm8960_configure_pll(9) — Kernel API Manual, but make it make sense 💖

okay bestie, so this is wm8960_configure_pll from the Kernel API Manual, and before you ask — yes, it's about the PLL out frequency, and yes, it's a vibe. buckle up 🎀

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✨ NAME ✨

wm8960_configure_pll — literally just checks if there is a PLL out frequency available 👑

and the PLL out frequency must be chosen such that these three things are true, no cap:

• sysclk = lrclk * dac_divs
• freq_out = sysclk * sysclk_divs
• 10 * sysclk = bclk * bclk_divs

that's the whole deal. that's the assignment. 🫶

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🌸 SYNOPSIS 🌸

int wm8960_configure_pll (struct snd_soc_component *component , int
freq_in , int *sysclk_idx , int *dac_idx , int *bclk_idx );

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🦋 ARGUMENTS 🦋

• component — the component structure 🧚 just the component structure, she's doing her thing
• freq_in — the input frequency, used to derive freq out via the PLL ✨
• sysclk_idx — the sysclk_divs index for the found sysclk 💜
• dac_idx — the dac_divs index for the found lrclk 🎀
• bclk_idx — the bclk_divs index for the found bclk 🌈

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💅 DESCRIPTION 💅

so here's the tea ☕ — if we cannot find an exact match for the (sysclk, lrclk, bclk) triplet, we relax the bclk such that bclk is chosen as the closest available frequency greater than the expected bclk. it's giving "close enough is still iconic" energy. not exact? still slaying, just slightly to the right 📐✨

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⭐ RETURN ⭐

• < 0 — in case no PLL frequency out available was found 😭 that's a no from her
• >= 0 — in case we could derive bclk, lrclk, sysclk from the PLL out using the (sysclk_idx, dac_idx, bclk_idx) dividers 🎉 periodt, that's the win

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🔥 SEE ALSO 🔥

• the Kernel file ./sound/soc/codecs/wm8960.c 👀
• wm8960_configure_sysclk(9) — her sister function, go say hi 💖

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aaand that's the page bestie, no notes 💅 so this whole thing lives in ./sound/soc/codecs, dated October 2026, and yeah — that's the version and the date, we love a timestamped slay. bye pookie, go configure that PLL 🌸🦋✨