1.\" $OpenBSD: sdhc.4,v 1.6 2016/01/11 22:08:46 kettenis Exp $ 2.\" 3.\" Theo de Raadt, 2006. Public Domain. 4.\" 5.Dd $Mdocdate: January 11 2016 $ 6.Dt SDHC 4 7.Os 8.Sh NAME 9.Nm sdhc 10.Nd SD Host Controller 11.Sh SYNOPSIS 12.Cd "sdhc* at pci?" 13.Cd "sdhc* at acpi?" 14.Cd "sdmmc* at sdhc?" 15.Sh DESCRIPTION 16The 17.Nm 18driver provides support for SD controllers following the 19SD Host Controller Standard Simplified Specification. 20.Pp 21The 22.Xr sdmmc 4 23subsystem performs SD/MMC transactions to communicate with 24whatever MMC, SD, SDHC, or SDIO devices are inserted into the SD slot. 25.Sh SEE ALSO 26.Xr intro 4 , 27.Xr sdmmc 4 28.Sh HISTORY 29The 30.Nm 31driver first appeared in 32.Ox 4.0 . 33.Sh AUTHORS 34.An -nosplit 35The 36.Nm 37driver was written by 38.An Uwe Stuehler Aq Mt uwe@openbsd.org . 39