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>

Since commit:

    2ccd451 ARM i.MX28: change default watchdog reset method

the external reset via the reset pin is broken. That commit overwrites the
HW_CLKCTRL_RESET register with only WDOG_POR_DISABLE set, which results in
disabling the external reset.

This patch uses read-modify-write to set the WDOG_POR_DISABLE, leaving the
WDOG_POR_DISABLE untouched.

Cc: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

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

The default setting for the imx28 watchdog is to do a power-off reset. If the
SoC is only powered via battery, then the watchdog powers the chip down, though.
According to the datasheet it should still be possible to execute a proper POR
with battery power, but testing showed otherwise.
When the watchdog power-off reset is disabled, a software reset is executed
instead. This works with and without battery power.

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
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>