RTC for 4.6 #2

Drivers:
 - abx80x: handle both XT and RC oscillators, XT failure bit and autocalibration
 - m41t80: avoid out of range year values
 - rv8803: workaround an i2c HW issue
rtc: abx80x: handle the oscillator failure bit

Handle the Oscillator Failure ('OF') bit from Oscillator Status register
(0x1D). This bit is cleared on set_time function and is read each time the
date/time is read, but only in case of XT Oscillator selection.
In RC mode, this bit is always set.

Signed-off-by: Mylène Josserand <mylene.josserand@free-electrons.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
1 file changed