On Tuesday 24 February 2009, Adrian Hunter wrote: > David Brownell wrote: > > From: David Brownell <[email protected]> > > > > Resolve longstanding issue noted by Adrian Hunter: confusion > > between settting VSEL=0 (which is 1.8V on MMC1) and poweroff. > > > > Also, leave VSEL alone if we're just powering the regulator off. > > > > Signed-off-by: David Brownell <[email protected]> > > --- > > Looks fine to me, but I wonder if you know why the regulator is > turned on (DEV_GRP) and then the voltage is selected (DEDICATED).
History, I'd guess. I seem to remember some sequencing constraint, but couldn't find it when last I sought it out in the reference manual. > Wouldn't it make more sense the other way around? I had the same thought. Eventually I'd like this code to mostly wither away ... using the regulator framework for the hsmmc driver will eliminate most of the remaining bits of twl4030-specific code. So I'd just leave it be for the moment. > Doesn't the new regulator framework do it that way? No; setting voltage and enabling are distinct operations. -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
