sdmmc(4)

sdmmc4

Sd bus

Usage

# arm64 sdmmc* at amlmmc? sdmmc* at bcmsdhost? sdmmc* at dwmmc? sdmmc* at imxesdhc? sdmmc* at sximmc?

# armv7 sdmmc* at bcmsdhost? sdmmc* at dwmmc? sdmmc* at imxesdhc? sdmmc* at mvpxa? sdmmc* at ommmc? sdmmc* at sximmc?

# octeon sdmmc* at octmmc?

# riscv64 sdmmc* at cdsdhc? sdmmc* at dwmmc?

# sparc64 sdmmc* at wbsd?

# all architectures sdmmc* at rtsx? sdmmc* at sdhc?

Overview

The sdmmc subsystem provides machine-independent bus support and drivers for SD/MMC devices.

Standard SD/SDHC memory devices will show up as a fake SCSI disk, using scsibus(4) and sd(4).

Releases

42 releases since OpenBSD 4.0; the text changed 9 times.

  1. 4.0–4.1
  2. 4.2–4.4
  3. 4.5
  4. 4.6–5.2
  5. 5.3
  6. 5.4
  7. 5.5
  8. 5.6–6.0
  9. 6.1–7.0
  10. 7.1–8.0

History

The sdmmc driver first appeared in OpenBSD 4.0.

Authors

The sdmmc driver was written by Uwe Stuehler ⟨[email protected]⟩.

From man 8.0-current-20261101 in OpenBSD 8.0-current (2026-11-01). Parsed by carta from the page's mdoc source.