1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index e23082fe88d0..68fb052afd3e 100644
--- 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.
+