drivers/mmc/core/Kconfig

   1 #
   2 # MMC core configuration
   3 #
   4
   5 config MMC_UNSAFE_RESUME
   6         bool "Assume MMC/SD cards are non-removable (DANGEROUS)"
   7         help
   8           If you say Y here, the MMC layer will assume that all cards
   9           stayed in their respective slots during the suspend. The
  10           normal behaviour is to remove them at suspend and
  11           redetecting them at resume. Breaking this assumption will
  12           in most cases result in data corruption.
  13
  14           This option is usually just for embedded systems which use
  15           a MMC/SD card for rootfs. Most people should say N here.
  16
  17           This option sets a default which can be overridden by the
  18           module parameter "removable=0" or "removable=1".
  19
  20 config MMC_CLKGATE
  21         bool "MMC host clock gating"
  22         help
  23           This will attempt to aggressively gate the clock to the MMC card.
  24           This is done to save power due to gating off the logic and bus
  25           noise when the MMC card is not in use. Your host driver has to
  26           support handling this in order for it to be of any use.
  27
  28           If unsure, say N.
  29
  30 config MMC_EMBEDDED_SDIO
  31         boolean "MMC embedded SDIO device support (EXPERIMENTAL)"
  32         help
  33           If you say Y here, support will be added for embedded SDIO
  34           devices which do not contain the necessary enumeration
  35           support in hardware to be properly detected.
  36
  37 config MMC_PARANOID_SD_INIT
  38         bool "Enable paranoid SD card initialization (EXPERIMENTAL)"
  39         help
  40           If you say Y here, the MMC layer will be extra paranoid
  41           about re-trying SD init requests. This can be a useful
  42           work-around for buggy controllers and hardware. Enable
  43           if you are experiencing issues with SD detection.