No need for the boards to manually add memory, we can do this
automatically by reading back the memory size from the SDRAM
controller.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Roland Hieber <r.hieber@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

This replaces the reset_cpu() function which every SoC or board must
provide with registered handlers. This makes it possible to have multiple
reset functions for boards which have multiple ways to reset the machine.
Also boards which have no way at all to reset the machine no longer
have to provide a dummy reset_cpu() function.

The problem this solves is that some machines have external PMICs or
similar to reset the system which have to be preferred over the
internal SoC reset, because the PMIC can reset not only the SoC but also
the external devices.

To pick the right way to reset a machine each handler has a priority. The
default priority is 100 and all currently existing restart handlers are
registered with this priority. of_get_restart_priority() allows to retrieve
the priority from the device tree which makes it possible for boards to
give certain restart handlers a higher priority in order to use this one
instead of the default one.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

This turns the MXS gpio support into a driver.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

When a device tree is present the SoC internal devices come from
it, so do not register them as platform devices.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

And replace the ones needed with the SoC specific header.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

This converts the apbh driver into a real driver.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

This adds support for the i.MX23 and i.MX28 clock modules. This mostly is
a copy from the kernel.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Currently the watchdog is occupied for system reset. This usage collides with
the dedicated usage of a watchdog. This patch change the behaviour of at least
i.MX23/i.MX28 where the chipset supports a simple and powerful alternative
to reset the whole SoC (including the PMIC).

Signed-off-by: Juergen Beisert <jbe@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>