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SDHC(4) Device Drivers Manual SDHC(4)

sdhc
SD Host Controller

sdhc* at pci?
sdmmc* at sdhc?

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.

intro(4), sdmmc(4)

The sdhc driver first appeared in OpenBSD 4.0.

The sdhc driver was written by Uwe Stuehler <uwe@openbsd.org>.
July 16, 2013 OpenBSD-5.7