MMC(4)

📦 version 15.1, in freebsd 14.5, freebsd 15.1, nixpkgs unstable

💖 NAME 💖

Okay bestie, welcome to MMC(4) — this is the page for mmc, the MultiMediaCard and SD Card bus driver. It’s giving “quietly runs the card bus” main character energy. 💅✨

🌸 SYNOPSIS 🌸

device mmc

That’s literally it. Iconic. 🎀

🦋 DESCRIPTION 🦋

So the mmc driver implements the MMC and SD Card bus. No cap.

It supports all MMC and SD bridges in the system. All SD or MMC cards in the system attach to an instance of mmc. Bestie, they all pull up to the same bus.

The mmc bus typically has only one slot, and only memory cards. That’s the usual vibe.

MultiMediaCards exist only in memory. SD Cards exist as memory, I/O, or combination cards. So SD Cards are out here with range. 🔥

🔥 SEE ALSO 🔥

  • mmcsd(4), sdhci(4)
  • SD Specifications, Part 1, Physical Layer, Simplified Specification.
  • The MultiMediaCard System Specification.

Go read those if you want the full lore. iykyk 📚💜

💀 BUGS 💀

🚨 SDIO cards currently do not work. Like, currently not working. Not the vibe. 😭

xoxo, your Debian girlie 🫶 — this MMC(4) page is dated June 10, 2021, and it came from Debian. Bye bestie! 💖🎀

📦 where this page comes from