sdhc(4)

sdhc4

Sd host controller

Usage

sdhc* at acpi? sdhc* at fdt? sdhc* at pci? sdmmc* at sdhc?

Overview

The sdhc driver provides support for SD controllers following the SD Host Controller Standard Simplified Specification.

The sdmmc(4) subsystem performs SD/MMC transactions to communicate with whatever MMC, SD, SDHC, or SDIO devices are inserted into the SD slot.

Releases

42 releases since OpenBSD 4.0; the text changed 5 times.

  1. 4.0–4.1
  2. 4.2–4.4
  3. 4.5–5.3
  4. 5.4–5.8
  5. 5.9–6.7
  6. 6.8–8.0

History

The sdhc driver first appeared in OpenBSD 4.0.

Authors

The sdhc 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.