mmc_retune_enable(9)

🌸 mmc_retune_enable(9) — from the Linux Kernel API Manual, bestie ✨

Okay so real talk, this one lives in the kernel docs and it's short but it matters, so let's not be chaotic about it.

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💖 NAME 💖

mmc_retune_enable — enter a transfer mode that requires retuning

Like, that's the whole job. It flips you into a mode where retuning is a thing that has to happen. Periodt.

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✨ SYNOPSIS ✨

void mmc_retune_enable (struct mmc_host *host );

Not me pointing out that there's no return value — it's void, she gives nothing back, she just does it. Iconic behavior honestly. 💅

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🎀 ARGUMENTS 🎀

• host — the host which should retune now. Like, this is your main character argument, the one you actually have to hand over. 🫶

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🦋 SEE ALSO 🦋

So here's the little friend group this function runs with — the kernel file it lives in is:

Kernel file ./drivers/mmc/core/host.c

and the whole squad of related calls is:

• mmc_retune_disable(9)
• mmc_of_parse(9)
• mmc_of_parse_voltage(9)
• mmc_first_nonreserved_index(9)
• mmc_alloc_host(9)
• mmc_add_host(9)
• mmc_remove_host(9)
• mmc_free_host(9)

iykyk, if you're poking at one of these you're probably gonna poke at the rest. 💀🌷

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lowkey reminder: this page is from ./drivers/mmc/core and it's dated October 2026, and yes the header up top is mmc_retune_enable(9) — mmc_retune_enable(9), Kernel API Manual, that's her full government name. 🧚‍♀️

Hope that ate, bestie — go retune something. 💜🔥