On Thu, Mar 15, 2012 at 9:58 PM, Arnd Bergmann <arnd@xxxxxxxx> wrote: > [Per] >> The stedma40 filter function is not really specific for ux500. ux500 >> use stedma40 but it should be possible to replace this DMA.IP with >> some other DMA-controller. This is board specific configuration. You >> should not need to change the mmci-driver just because the dma-driver >> has changed, right? >> Or will the board-configuration now be placed in mmci-ux500? > > Right, the DMA configuration does not really belong in there, but > the voltage setup might (unless we convert that to the regulator > setup). The voltage to power the card is already using the regulator framework with the MMC-specific helpers in the MMCI driver. But I guess you're after modelling the levelshifter as a regulator? Basically the level shifter is a separate device has two voltage inputs A and B (from other regulators) that is controlled by a simple GPIO to select voltage A or B to drive the signals to the card. That could probably be modelled as a regulator with two volategs for sure, but then we should maybe create a more generic "struct level_shifter_regulator" (or whatever) for the concept as a whole. Let's page Mark about what to do with levelshifters and whether they are regulators of sorts in his book. Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
