tree 4c20938c8d78343fd3c97af3959800e1cbdc1c59
parent 05f5854da7072620ece2784a4149794bbcb38e00
author Haijun.Zhang <Haijun.Zhang@freescale.com> 1389333138 +0800
committer York Sun <yorksun@freescale.com> 1390409794 -0800

esdhc: Detecting 8 bit width before mmc initialization

The upper 4 data signals of esdhc are shared with spi flash.
So detect if the upper 4 pins are assigned to esdhc before
enable sdhc 8 bit width.

Signed-off-by: Haijun Zhang <haijun.zhang@freescale.com>
Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
Reviewed-by: York Sun <yorksun@freescale.com>