Hi Tomasz, On Mon, Mar 3, 2014 at 5:02 PM, Tomasz Figa <tomasz.figa@xxxxxxxxx> wrote: > On a number of platforms, devices are part of controllable power > domains, which need to be enabled before such devices can be accessed > and may be powered down when the device is idle to save some power. > This means that on systems that support power domain control using > generic power domains subsystem, it is necessary to add device to its > power domain before binding a driver to it and remove it from its power > domain after its driver is unbound to make sure that an unused device > does not affect power domain state. > > Since this is not limited to particular busses and specific > archs/platforms, it is more convenient to do the above directly in > driver core, just as done with pinctrl default configuration. This patch > adds necessary code to really_probe() and __device_release_driver() to > achieve this and maintain consistent stack-like ordering of operations > happening when binding and unbinding a driver. > > Signed-off-by: Tomasz Figa <tomasz.figa@xxxxxxxxx> patches 01 and 02 Reviewed-by: Philipp Zabel <philipp.zabel@xxxxxxxxx> Tested-by: Philipp Zabel <philipp.zabel@xxxxxxxxx> on i.MX6 GK802. regards Philipp -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
