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mmc: core: new discard feature support at eMMC v4.5
authorKyungmin Park <kyungmin.park@samsung.com>
Tue, 18 Oct 2011 00:34:04 +0000 (09:34 +0900)
committerChris Ball <cjb@laptop.org>
Wed, 26 Oct 2011 20:32:27 +0000 (16:32 -0400)
MMC v4.5 supports the DISCARD feature (CMD38).  It's different from
trim and there's no check bit.  Currently it's only supported at v4.5.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

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