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authorTimothy Pearson <tpearson@raptorengineering.com>2017-08-23 14:45:25 -0500
committerTimothy Pearson <tpearson@raptorengineering.com>2017-08-23 14:45:25 -0500
commitfcbb27b0ec6dcbc5a5108cb8fb19eae64593d204 (patch)
tree22962a4387943edc841c72a4e636a068c66d58fd /drivers/mmc/card/Kconfig
downloadast2050-linux-kernel-fcbb27b0ec6dcbc5a5108cb8fb19eae64593d204.zip
ast2050-linux-kernel-fcbb27b0ec6dcbc5a5108cb8fb19eae64593d204.tar.gz
Initial import of modified Linux 2.6.28 tree
Original upstream URL: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git | branch linux-2.6.28.y
Diffstat (limited to 'drivers/mmc/card/Kconfig')
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1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/mmc/card/Kconfig b/drivers/mmc/card/Kconfig
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+#
+# MMC/SD card drivers
+#
+
+comment "MMC/SD/SDIO Card Drivers"
+
+config MMC_BLOCK
+ tristate "MMC block device driver"
+ depends on BLOCK
+ default y
+ help
+ Say Y here to enable the MMC block device driver support.
+ This provides a block device driver, which you can use to
+ 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"
+ 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.
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