From: David Brownell <dbrownell@users.sourceforge.net>
Date: Tue, 17 Feb 2009 22:49:01 +0000 (-0800)
Subject: omap_hsmmc: only MMC1 allows HCTL.SDVS != 1.8V
X-Git-Tag: v2.6.29-rc6~41^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=eb25082657be3e7639e349fc926afdcbb0a4dc65;p=pandora-kernel.git

omap_hsmmc: only MMC1 allows HCTL.SDVS != 1.8V

Based on a patch from Tony Lindgren ... after initialization,
never change HCTL.SDVS except for MMC1.  The other controller
instances only support 1.8V in that field, although they can
suport other card/SDIO/eMMC/... voltages with level shifting
solutions such as external transceivers.

MMC2 behavior sanity tested on Overo/WLAN, OMAP3430 SDP, and
custom hardware.  MMC1 also sanity tested on those platforms
plus Beagle.  This also fixes a bug preventing MMC2 (and also
presumably MMC3) from powering down when requested.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
---

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