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sdhci(4) [freebsd man page]

SDHCI(4)						   BSD Kernel Interfaces Manual 						  SDHCI(4)

NAME

     sdhci -- PCI SD Host Controller bridge driver

SYNOPSIS

     To compile this driver into the kernel, place the following lines in your kernel configuration file:

	   device mmc
	   device mmcsd
	   device sdhci

     Alternatively, to load the driver as a module at boot time, place the following lines in loader.conf(5):

	   mmc_load="YES"
	   mmcsd_load="YES"
	   sdhci_load="YES"

DESCRIPTION

     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 remov-
     ing.

HARDWARE

     The sdhci driver supports different specification compatible chips. The following chips have been verified to work:

     o	 ENE CB712
     o	 ENE CB714
     o	 RICOH R5C822
     o	 RICOH R5CE823
     o	 TI PCIXX21/XX11

SEE ALSO

     mmc(4), mmcsd(4)

     SD Specifications, Part 2, SD Host Controller, Simplified Specification.

AUTHORS

     Alexander Motin <mav@FreeBSD.org>

BUGS

     Many of existing SD controller chips have some nonstandard requirements, proprietary registers and hardware bugs, requiring additional han-
     dling.  ENE chips are handled to work fine, while some revisions of RICOH and TI controllers still do not see cards without some additional
     initialization.

BSD
								 February 9, 2012							       BSD

Check Out this Related Man Page

UCYCOM(4)						   BSD Kernel Interfaces Manual 						 UCYCOM(4)

NAME

     ucycom -- device driver for Cypress CY7C63743 and CY7C64013 USB to RS232 bridges

SYNOPSIS

     To compile this driver into the kernel, place the following line in your kernel configuration file:

	   device ucycom

     Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

	   ucycom_load="YES"

DESCRIPTION

     The ucycom driver provides support for the Cypress CY7C63743 and CY7C64013 bridge chips.  These chips were designed to provide a low-cost
     transition path to USB for existing RS232 devices, and have fairly limited capabilities.

     The ucycom driver behaves like a tty(4).

HARDWARE

     The ucycom driver currently supports the following devices which incorporate Cypress USB to RS232 bridge chips:

     o	 DeLorme Earthmate USB GPS receiver

SEE ALSO

     tty(4), usb(4)

HISTORY

     The ucycom driver first appeared in FreeBSD 5.3.

AUTHORS

     The ucycom driver and this manual page were written by Dag-Erling Smorgrav <des@FreeBSD.org>.

BSD
								 November 22, 2006							       BSD
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