Nishanth Menon wrote:
Tony Lindgren had written, on 01/13/2010 03:00 PM, the following:
* Tony Lindgren <tony@xxxxxxxxxxx> [100113 12:38]:
* Tony Lindgren <tony@xxxxxxxxxxx> [100113 12:36]:
You might want to check what happens in omap off-idle mode in these cases
and see if enabling OMAP_PIN_OFF_INPUT_PULLDOWN makes any difference in
power consumption in off state. That probably does not matter unless the
floating lines cause the eMMC to do something on it's own :)
Or OMAP_PIN_OFF_OUTPUT_LOW actually.
One more time.. Most likely OMAP_PIN_OFF_INPUT_PULLDOWN is safer
in general as the OMAP_PIN_OFF_OUTPUT_LOW does not work for all
pins. According to the TRM, OMAP_PIN_OFF_OUTPUT_LOW only works
for pins where at least one of the mux modes supports output
mode.
is'nt vaux/vmmc/whatever voltage to eMMC shutoff for the device on the
board in off mode? I wonder why the behavior is seen. The only thing
that I am worried is that the board potentially will draw more current
as the lines are driven low.
OMAP is not OFF just the eMMC. Current is sucked out of the data lines
through the eMMC to the regulator which is off.
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