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Based on kernel version 3.9. Page generated on 2013-05-02 22:53 EST.

1	What:           Attribute for calibrating ST-Ericsson AB8500 Real Time Clock
2	Date:           Oct 2011
3	KernelVersion:  3.0
4	Contact:        Mark Godfrey <mark.godfrey@stericsson.com>
5	Description:    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)
11	Users:          The /vendor/st-ericsson/base_utilities/core/rtc_calibration
12	                daemon uses this interface.
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