add-glamo-mci-slower-clocking-dynamic-switching.patch

This patch gives glamo-mci a concept of a platform-defined
dynamic clock slowing callback.  It means that platform code
can associate some completely external state to decide if
we run the SD clock at normal rate or a rate divided by a
module parameter "sd_slow_ratio", which you can set on
kernel commandline like this:

glamo_mci.sd_slow_ratio=8

you can also change it at runtime by

echo 8 > /sys/module/glamo_mci/parameters/sd_slow_ratio

If no platform callback is defined, then no slow mode
is used.  If it is defined, then the default division
action is / 8, eg, 16MHz normal -> 2MHz slow mode.

Signed-off-by: Andy Green <andy@openmoko.com>

0 files changed, 0 insertions, 0 deletions