mount the filesystem. Almost everyone wishing MMC support
should say Y or M here.
+config MMC_BLOCK_BOUNCE
+ bool "Use bounce buffer for simple hosts"
+ depends on MMC_BLOCK
+ default y
+ help
+ SD/MMC is a high latency protocol where it is crucial to
+ send large requests in order to get high performance. Many
+ controllers, however, are restricted to continuous memory
+ (i.e. they can't do scatter-gather), something the kernel
+ rarely can provide.
+
+ Say Y here to help these restricted hosts by bouncing
+ requests back and forth from a large buffer. You will get
+ a big performance gain at the cost of up to 64 KiB of
+ physical memory.
+
+ If unsure, say Y here.
+
+config SDIO_UART
+ tristate "SDIO UART/GPS class support"
+ depends on MMC
+ help
+ SDIO function driver for SDIO cards that implements the UART
+ class, as well as the GPS class which appears like a UART.
+
+config MMC_TEST
+ tristate "MMC host test driver"
+ default n
+ help
+ Development driver that performs a series of reads and writes
+ to a memory card in order to expose certain well known bugs
+ in host controllers. The tests are executed by writing to the
+ "test" file in sysfs under each card. Note that whatever is
+ on your card will be overwritten by these tests.
+
+ This driver is only of interest to those developing or
+ testing a host driver. Most people should say N here.