fsl_ssi_config_enable(9)

💅 fsl_ssi_config_enable(9) — like, the Kernel API Manual page you've been waiting for 🎀

Okay so bestie, picture this: you're deep in the kernel sound subsystem, the manual is called Kernel API Manual, and the star of the show is fsl_ssi_config_enable. Buckle up, we're going in 💖

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✨ NAME ✨

fsl_ssi_config_enable — it sets the SCR, SIER, STCR and SRCR registers using the cached values chillin' in regvals. That's the whole vibe 🫶

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🌸 SYNOPSIS 🌸

void fsl_ssi_config_enable (struct fsl_ssi *ssi , bool tx );

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🦋 ARGUMENTS 🦋

• ssi — the SSI context, aka the main character struct you're passing in 💫
• tx — the direction. yes ma'am, that's it, that's the flag 🌈

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⭐ NOTES ⭐

1. For offline_config SoCs, you enable all the necessary bits of both streams when the 1st stream starts — even if the opposite stream is literally never gonna start. no cap, that's just how it is 💀
2. It also clears the FIFO before setting regvals; and SOR is safe to set online. lowkey important, so remember it 👑

ngl the FIFO-clearing bit is easy to skip over — don't skip over it 🙈

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🔥 SEE ALSO 🔥

Peep the kernel file ./sound/soc/fsl/fsl_ssi.c and its whole friend group:

• FSLSSI_I2S_FORMATS(9)
• struct fsl_ssi(9)
• fsl_ssi_isr(9)
• fsl_ssi_config_disable(9)
• fsl_ssi_setup_regvals(9)
• fsl_ssi_set_bclk(9)
• fsl_ssi_hw_params(9)
• fsl_ssi_set_dai_fmt(9)
• fsl_ssi_set_dai_tdm_slot(9)
• fsl_ssi_trigger(9)
• fsl_ssi_hw_init(9)
• fsl_ssi_hw_clean(9)

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that's the whole page, bestie, you ate it up ✨

Cute lil sign-off: this lived in ./sound/soc/fsl, and it's dated October 2026 — the fsl_ssi_config_enable(9) era, iconic behavior only 💜🦋🌸