sdhci_cdns_tune_blkgap(9)

✨ sdhci_cdns_tune_blkgap(9) ✨

okay so bestie, you've stumbled into the Kernel API Manual and this one is literally from the sdhci_cdns_tune_blkgap(9) page 💅 come sit with me, it's short and sweet and honestly kind of iconic.

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🎀 NAME 🎀

sdhci_cdns_tune_blkgap — tune the multi-block read gap 🦋

no cap, that's the whole vibe. it tunes a gap. in a multi-block read. we love a function that knows what it wants.

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🌸 SYNOPSIS 🌸

int sdhci_cdns_tune_blkgap (struct mmc_host *mmc );

yep, that's it, that's the whole signature — copy it exactly, spaces and all, don't @ me 🙈

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💖 ARGUMENTS 💖

• mmc — the MMC host 👑 that's literally all it says and honestly? fair. it's the host, she's the main character, we move.

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✨ DESCRIPTION ✨

so here's the tea 🍵: this function tunes the delay used in multi-block read. the way that it does this is by trying to send a multi-block read command with an incremented gap — and it keeps going unless it succeeds. like, it will literally keep bumping that gap up until the read goes through 😭 persistent queen behavior fr fr.

no extra lore, no secret tricks, that's the entire plot 🫶

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🔥 RETURN 🔥

returns an error code 💀 (so like, check it, bestie — don't just assume everything slayed)

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⭐ SEE ALSO ⭐

• Kernel file ./drivers/mmc/host/sdhci-cadence.c 👀 go read the source, iykyk

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💜 tiny note to self: the argument is literally documented as "MMC host" and nothing else. i'm not gonna invent lore that isn't there. we respect the manpage in this house 🎀

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okay that's the page!! 🌈 this gem lives under ./drivers/mmc/host, and the date on it is October 2026 — so mark your calendars bestie, future vibes only 🧚🍓 periodt 💅