5 comment "MMC/SD Card Drivers"
8 tristate "MMC block device driver"
11 Say Y here to enable the MMC block device driver support.
12 This provides a block device driver, which you can use to
13 mount the filesystem. Almost everyone wishing MMC support
14 should say Y or M here.
16 config MMC_BLOCK_BOUNCE
17 bool "Use bounce buffer for simple hosts"
21 SD/MMC is a high latency protocol where it is crucial to
22 send large requests in order to get high performance. Many
23 controllers, however, are restricted to continuous memory
24 (i.e. they can't do scatter-gather), something the kernel
27 Say Y here to help these restricted hosts by bouncing
28 requests back and forth from a large buffer. You will get
29 a big performance gain at the cost of up to 64 KiB of
32 If unsure, say Y here.