> I have no idea if the SDHI driver disables the module clock when it is > idle, but shouldn't the card detect clock be running all the time when the > driver is bound to the device? Yes, it should. And for all instances with just one clock, this means this main clock must be running. So, en-/disable functions are all about suspend/resume and bind/unbind. (Huh, looks like the unbind part is missing, though. Need to look closer). My take is: either we implement the power saving and handle the cd clock seperately. Or we ignore the power saving for now and handle both clocks as virtually one, i.e. en-/disable them at the same time. Doesn't make sense?
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