A 32 bit RTC is housed inside PMIC. The RTC driver
uses SPMI interface to communicate with the RTC module.
RTC device is divided into two sub-peripherals:
1. RTC read-write peripheral having basic RTC registers.
2. Alarm peripheral for controlling alarm.
RTC peripherals are children of SPMI device and driver
receives it's configuration parameters (such as alarm
powerup feature to powerup phone using alarm interrupt)
from device tree.
Change-Id: I46a2ffc0f6c9c5ee174cf803de19e656da7ce088
Signed-off-by: Ashay Jaiswal <ashayj@codeaurora.org>
This allows to load the OF driver based informations from the device
tree. Systems without BIOS may need to perform some initialization.
PowerPC creates a PNP device from the OF information and performs this
kind of initialization in their private PCI quirk. This looks more
generic.
This patch also avoids registering the platform RTC driver on X86 if
we have a device tree blob. Otherwise we would setup the device based
on the hardcoded information in arch/x86 rather than the device tree
based one.
[ tglx: Changed "int of_have_populated_dt()" to bool as recommended by
Grant ]
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Cc: sodaville@linutronix.de
Cc: devicetree-discuss@lists.ozlabs.org
Cc: rtc-linux@googlegroups.com
Cc: Alessandro Zummo <a.zummo@towertech.it>
LKML-Reference: <1298405266-1624-12-git-send-email-bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
