On Thursday 13 September 2012 13:45:39 Tomi Valkeinen wrote: > * PGP Signed by an unknown key > > On Wed, 2012-09-12 at 18:57 +0900, Alexandre Courbot wrote: > > > Some device drivers (panel backlights especially) need to follow precise > > sequences for powering on and off, involving gpios, regulators, PWMs > > with a precise powering order and delays to respect between each steps. > > These sequences are board-specific, and do not belong to a particular > > driver - therefore they have been performed by board-specific hook > > functions to far. > > > The sequences are not board-specific, they are device (backlight, etc.) > specific. The sequences have been handled in board-specific hook > functions so far because there hasn't been proper drivers for the > devices. > > If I were to take the same panel (and backlight) you have and install it > on my board, I would need the same power sequence. You could also have power sequences that control a set of GPIOs for an external interface (and would then be more board-specific), but you are right that for most of the case power seqs apply to devices and this statement is misleading. I will fix that in the commit message and wherever this might appear. Alex. -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
