From: Seungwon Jeon <tgih.jun@samsung.com>
Date: Fri, 30 Aug 2013 15:13:03 +0000 (+0900)
Subject: mmc: dw_mmc: exynos: adjust the clock rate with speed mode
X-Git-Tag: v3.13-rc1~50^2~95
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c6d9deda64d426a25aafeb179962c9cf3c834e2f;p=pandora-kernel.git

mmc: dw_mmc: exynos: adjust the clock rate with speed mode

Exynos's host has divider logic before 'cclk_in' to controller core.
It means that actual clock rate of ciu clock comes from this divider
value. So, source clock should be adjusted along with 'ciu_div' which
indicates the host's divider ratio. Setting clock rate basically fits
the required speed. Specially, 'cclk_in' should have double rate of
target speed in case of DDR 8-bit mode.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Tested-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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