Kconfig revision 88ae600d58a8d3160144af480133a988404b8d59 
1#
2# MMC/SD card drivers
3#
4
5comment "MMC/SD Card Drivers"
6
7config MMC_BLOCK
8	tristate "MMC block device driver"
9	depends on BLOCK
10	default y
11	help
12	  Say Y here to enable the MMC block device driver support.
13	  This provides a block device driver, which you can use to
14	  mount the filesystem. Almost everyone wishing MMC support
15	  should say Y or M here.
16
17config MMC_BLOCK_BOUNCE
18	bool "Use bounce buffer for simple hosts"
19	depends on MMC_BLOCK
20	default y
21	help
22	  SD/MMC is a high latency protocol where it is crucial to
23	  send large requests in order to get high performance. Many
24	  controllers, however, are restricted to continuous memory
25	  (i.e. they can't do scatter-gather), something the kernel
26	  rarely can provide.
27
28	  Say Y here to help these restricted hosts by bouncing
29	  requests back and forth from a large buffer. You will get
30	  a big performance gain at the cost of up to 64 KiB of
31	  physical memory.
32
33	  If unsure, say Y here.
34
35config SDIO_UART
36	tristate "SDIO UART/GPS class support"
37	depends on MMC
38	help
39	  SDIO function driver for SDIO cards that implements the UART
40	  class, as well as the GPS class which appears like a UART.
41
42config MMC_TEST
43	tristate "MMC host test driver"
44	default n
45	help
46	  Development driver that performs a series of reads and writes
47	  to a memory card in order to expose certain well known bugs
48	  in host controllers. The tests are executed by writing to the
49	  "test" file in sysfs under each card. Note that whatever is
50	  on your card will be overwritten by these tests.
51
52	  This driver is only of interest to those developing or
53	  testing a host driver. Most people should say N here.
54