Software Layer
File System (Sector Based)
Card (Block Device Driver)
Core (eMMC Driver )
Host (Host Driver, Platform Dependent)
eMMC Card (Card)
The eMMC subsystem (./drivers/mmc) is organized into three layers:
• The card layer is the external interface. It is seen as a block device driver, depending
on the enablement of block layer support for the kernel and interfaces within the file
system.
• The core layer implements all eMMC-dependent functionality, such as main operations,
command management, host setting, management functions, and high-level
functions.
• The host layer implements the driver for most known platform controllers and is platform
dependent.
SDHCI Specification
https://www.sdcard.org/downloads/pls/partA2_300.pdf
Reference
https://www.sdcard.org/downloads/pls/partA2_300.pdf
http://www.ebv.com/fileadmin/design_solutions/php/download.php?path=fileadmin%2Fproducts%2FEBVuniversity%2F120912_Micron_e.MMC%2F120912_mic_emmc_Linux.pdf
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