From: Daniel Drake Date: Sun, 25 Nov 2012 18:02:54 +0000 (-0500) Subject: mmc: dt: add no-1-8-v device tree flag X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~96^2~19 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8ed765aac31b473e1881986d9fe2b6386f49f933;p=pandora-kernel.git mmc: dt: add no-1-8-v device tree flag The OLPC XO-1.75 laptop includes a SDHCI controller which is 1.8v capable, and it truthfully reports so in its capabilities. This alternate voltage is used for driving new "UHS-I" SD cards at their full speed. However, what the controller doesn't know is that the motherboard physically doesn't have a 1.8v supply available, so attempting to switch to the 1.8v level will result in a situation that cannot be recovered from without physically replugging the SD card. Add a device tree flag that can be used on systems like these, and hook it up to the equivalent SDHCI quirk. Signed-off-by: Daniel Drake Reviewed-by: Philip Rakity Signed-off-by: Chris Ball --- Reading git-diff-tree failed