El Mon, Aug 08, 2016 at 04:52:07PM +0800 Peter Chen ha dit: > We have an well-known problem that the device needs to do some power > sequence before it can be recognized by related host, the typical > example like hard-wired mmc devices and usb devices. > > This power sequence is hard to be described at device tree and handled by > related host driver, so we have created a common power sequence > library to cover this requirement. The core code has supplied > some common helpers for host driver, and individual power sequence > libraries handle kinds of power sequence for devices. > > pwrseq_generic is intended for general purpose of power sequence, which > handles gpios and clocks currently, and can cover regulator and pinctrl > in future. The host driver calls pwrseq_alloc_generic to create > an generic pwrseq instance. > > Signed-off-by: Peter Chen <[email protected]> > Tested-by Joshua Clayton <[email protected]>
Reviewed-by: Matthias Kaehlcke <[email protected]> Tested-by: Matthias Kaehlcke <[email protected]>
