mmc_spi host driver

[linux-2.6-block.git] / drivers / mmc / host / Kconfig

diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index e23082fe88d0ddebac4921b54631fb75bed935e0..68fb052afd3ee12b548bb46298534325f988d2f6 100644 (file)
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -100,3 +100,16 @@ config MMC_TIFM_SD
           To compile this driver as a module, choose M here: the
          module will be called tifm_sd.
 
+config MMC_SPI
+       tristate "MMC/SD over SPI (EXPERIMENTAL)"
+       depends on MMC && SPI_MASTER && !HIGHMEM && EXPERIMENTAL
+       select CRC7
+       select CRC_ITU_T
+       help
+         Some systems accss MMC/SD cards using a SPI controller instead of
+         using a "native" MMC/SD controller.  This has a disadvantage of
+         being relatively high overhead, but a compensating advantage of
+         working on many systems without dedicated MMC/SD controllers.
+
+         If unsure, or if your system has no SPI master driver, say N.
+