On Wed, Nov 04, 2009 at 08:20:46PM +0530, Gadiyar, Anand wrote: > I meant: for the same driver (say EHCI in this case) on two different > boards, if one of them needs a particular regulator (say the 1v8 from TWL4030) > and the other needs none at all (but needs the regulator API in general for > other devices on the board), then what would happen?
Like I say, if the kernel is built with regulator support then a fixed voltage regulator should be defined representing the supply if it is provided by a fixed voltage regulator - if the supply is essential to the correct operation of the device this will reflect the actual hardware. If the supply is genuinely optional and need not be connected for correct operation of the device then the consumer driver should gracefully handle failure to acquire the regulator, for example by disabling functionality that depends on the additional supply, but this is relatively unusual. -- 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
