1What:           Attribute for calibrating ST-Ericsson AB8500 Real Time Clock
 2Date:           Oct 2011
 3KernelVersion:  3.0
 4Contact:        Mark Godfrey <mark.godfrey@stericsson.com>
 5Description:    The rtc_calibration attribute allows the userspace to
 6                calibrate the AB8500.s 32KHz Real Time Clock.
 7                Every 60 seconds the AB8500 will correct the RTC's value
 8                by adding to it the value of this attribute.
 9                The range of the attribute is -127 to +127 in units of
10                30.5 micro-seconds (half-parts-per-million of the 32KHz clock)
11Users:          The /vendor/st-ericsson/base_utilities/core/rtc_calibration
12                daemon uses this interface.