sta350_set_dai_sysclk(9)

💅 sta350_set_dai_sysclk(9) — configure MCLK ✨

okay so you're in the Kernel API Manual bestie, and this page is all about sta350_set_dai_sysclk — the little function that handles MCLK configuration for the STA350 codec. it's giving very niche, very iconic, very "iykyk" 🎀

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🌸 NAME 🌸

sta350_set_dai_sysclk — configure MCLK. that's it, that's the whole vibe 💖

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✨ SYNOPSIS ✨

int sta350_set_dai_sysclk (struct snd_soc_dai *codec_dai , int clk_id ,
unsigned int freq , int dir );

no cap, that's the exact signature — copy it character for character or the compiler will absolutely humble you 😭

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🦋 ARGUMENTS 🦋

• codec_dai — the codec DAI, bestie. the main character of this parameter list 👑
• clk_id — the clock ID. and honestly? it's ignored. not me passing whatever, it does not care 🙈
• freq — the MCLK input frequency, aka the number that actually matters here ⭐
• dir — the clock direction. also ignored, so don't stress about it 💀

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💜 DESCRIPTION 💜

so the whole point: the value of MCLK is what determines which sample rates the STA350 supports, based on the mcs_ratio_table. that's the core tea ☕✨

⚠️ and this part is important, bestie: this function must be called by the machine driver's 'startup' function. if you don't, the list of supported sample rates won't be available in time for ALSA. not a suggestion, not a maybe — it's a must 🫶

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🌈 SEE ALSO 🌈

• Kernel file ./sound/soc/codecs/sta350.c — the source, go read it, it ate 💅
• sta350_set_dai_fmt(9)
• sta350_hw_params(9)
• sta350_set_bias_level(9)

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and that's the page, bestie 🦋💖 it lives in ./sound/soc/codecs, dated October 2026 — periodt, go configure some MCLK ✨🎀🌈