mmc: sdhci: Add ADMA2 64-bit addressing support for V4 mode
ADMA2 64-bit addressing support is divided into V3 mode and V4 mode. So there are two kinds of descriptors for ADMA2 64-bit addressing i.e. 96-bit Descriptor for V3 mode, and 128-bit Descriptor for V4 mode. 128-bit Descriptor is aligned to 8-byte. For V4 mode, ADMA2 64-bit addressing is enabled via Host Control 2 register. Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> [Ulf: Fixed conflict while applying] Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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