tree 41fe063b77ace7724f90b516e3f9053a9ef89998
parent e41aa921e2b891e59517836b3eeb07cae898c81b
author Qixiang Xu <qixiang.xu@arm.com> 1516167081 +0800
committer Qixiang Xu <qixiang.xu@arm.com> 1516169669 +0800

emmc: add macros CMD21, BUS_WIDTH_DDR_4 and BUS_WIDTH_DDR_8

Add some macros according to JEDEC Standard Embedded Multi-Media
Card (eMMC) Electrical Standard (5.1)": Table 145 - Bus Mode
Selection.

Change-Id: Iaa45e0582653ef4290efd60d039f0bdc420eeb47
Signed-off-by: Qixiang Xu <qixiang.xu@arm.com>