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-rw-r--r-- | user/bsps/bsps-arm.rst | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/user/bsps/bsps-arm.rst b/user/bsps/bsps-arm.rst index 70a6162..f261db1 100644 --- a/user/bsps/bsps-arm.rst +++ b/user/bsps/bsps-arm.rst @@ -130,6 +130,14 @@ system controls: A value of zero for the time or count disables the interrupt coalescing in the corresponding direction. +MMC/SDCard Driver +----------------- + +The MMC/SDCard driver (uSDHC module) is provided by the `libbsd`. It is +initialized according to the device tree. Pin re-configuration according to +the serial clock frequency is not supported. Data transfers are extremely +slow. This is probably due to the missing DMA support. + Caveats ------- |