rt5670_sel_asrc_clk_src(9)

📦 version 7.3.1, in nixpkgs unstable

💅 rt5670_sel_asrc_clk_src — the Kernel API Manual, bestie edition ✨

okay so this is a page straight outta the Kernel API Manual, and it's all about rt5670_sel_asrc_clk_src 🎀 buckle up, it's actually so good.

🌸 NAME 🌸

rt5670_sel_asrc_clk_src — literally the function that selects the ASRC clock source for a whole set of filters 🦋

✨ SYNOPSIS ✨

int rt5670_sel_asrc_clk_src (struct snd_soc_component *component ,
unsigned int filter_mask , unsigned int clk_src );

that's the whole vibe, no cap 💅

🎀 ARGUMENTS 🎀

  • component — the SoC audio component device. iconic. necessary. main character 🫶
  • filter_mask — a mask of filters 💫 yes, a mask, of the filter variety.
  • clk_src — the clock source ⏰ the whole point, honestly.

🔥 DESCRIPTION 🔥

okay so picture this: the ASRC function exists for asynchronous MCLK and LRCK 😭 asynchronous clocks, we've all been there.

also — and this part matters — since the RT5670 can only support standard 32fs or 64fs i2s format, ASRC should be enabled to support special i2s clock formats such as Intel's 100fs (100 * sampling rate) 🌈 like, that's the whole reason it's here.

what ASRC does is track the i2s clock and generate a corresponding system clock for the codec 🕰️✨ cute little clock matchmaker.

and this function? it provides an API to select the clock source for a set of filters specified by the mask 🎯 and the codec driver will turn on ASRC for those filters if ASRC is selected as their clock source. conditional queen 👑

👑 SEE ALSO 👑

ngl, if you're touching ASRC and MCLK/LRCK at the same time, keep this one bookmarked. it's giving essential. 💖

and that's the page, bestie 🧚 from the lovely folks at ./sound/soc/codecs, dated October 2026, in the Kernel API Manual — this has been rt5670_sel_asrc_clk_src(9), slay, periodt, go read your clocks 💜🦋🌸

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