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CONFIG_MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER

General informations

The Linux kernel configuration item CONFIG_MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER:

Help text

This option is selected by drivers running on big endian hosts and performing I/O to a SDHCI controller through a bus that implements a hardware byte swapper using a 32-bit datum. This endian mapping mode is called "data invariance" and has the effect of scrambling the addresses and formats of data accessed in sizes other than the datum size.

This is the case for the Freescale eSDHC and Nintendo Wii SDHCI.

Hardware

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