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mmc: sdhci-esdhc-imx: add DDR mode support for mx6
authorDong Aisheng <b29396@freescale.com>
Fri, 18 Oct 2013 11:48:46 +0000 (19:48 +0800)
committerChris Ball <chris@printf.net>
Mon, 21 Oct 2013 19:58:10 +0000 (15:58 -0400)
commitde5bdbffd89dea0e3de76f99b0b036422bb93686
tree25ba1c08549c4e8c44171184d31e81f9af82d37dtree | snapshot (tar.gz zip)
parent114f2bf6a158cd84c1a7280cf6233904c8bce430commit | diff
mmc: sdhci-esdhc-imx: add DDR mode support for mx6

When DDR mode is enabled, the initial pre_div should be 2.
And the pre_div value should be changed accordingly
from
...
02h) Base clock divided by 4
01h) Base clock divided by 2
00h) Base clock divided by 1
to
..
02h) Base clock divided by 8
01h) Base clock divided by 4
00h) Base clock divided by 2

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
drivers/mmc/host/sdhci-esdhc-imx.c diff | blob | blame | history