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sdhci - PCI SD Host Controller bridge driver
The sdhci driver supports PCI devices with class 8 and subclass 5
according to SD Host Controller Specification. Driver supports up to six
high speed 4bit MMC/SD slots per controller. Driver attaches mmc bus to
the respective slot on card insertion and detaches it on card removing.
SD Specifications, Part 2, SD Host Controller, Simplified Specification.
Alexander Motin 〈mav@FreeBSD.org〉.