From: Alexander Shiyan <shc_work@mail.ru>
Date: Thu, 3 Apr 2014 21:50:00 +0000 (-0700)
Subject: rtc: mc13xxx: change RTC validation scheme
X-Git-Tag: v3.15-rc1~106^2~43
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=12de362108d5ec24cce1bbe520570dc8fdccca9c;p=pandora-kernel.git

rtc: mc13xxx: change RTC validation scheme

Datasheet says: "When the VSRTC voltage drops to the range of 0.9 - 0.8V,
the RTCPORB reset signal is generated and the contents of the RTC will
be reset.  <skip>.  To inform the processor that the contents of the RTC
are no longer valid due to the reset, a timer reset interrupt function
is implemented with the RTCRSTI bit." This patch makes the RTC valid by
default until RTCRST interrupt occurs.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Sascha Hauer <kernel@pengutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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