From: Sascha Hauer <s.hauer@pengutronix.de>
Date: Mon, 21 Jan 2013 11:02:28 +0000 (+0800)
Subject: mmc: sdhci-esdhc-imx: support 8bit mode
X-Git-Tag: v3.9-rc1~78^2~37
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=af51079e68d4759e458b0592df5d1fab373c43ae;p=pandora-kernel.git

mmc: sdhci-esdhc-imx: support 8bit mode

The i.MX esdhc has a nonstandard bit layout for the SDHCI_HOST_CONTROL
register. To support 8bit bus width on i.MX populate the platform_bus_width
callback. This is tested on an i.MX25, but should according to the datasheets
work on the other i.MX using this hardware aswell. The i.MX6, while having
a SDHCI_SPEC_300 controller, still uses the same nonstandard register layout.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
---

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