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Based on kernel version 4.13.3. Page generated on 2017-09-23 13:54 EST.

1	What:           /sys/class/rtc/rtc0/device/rtc_calibration
2	Date:           Oct 2011
3	KernelVersion:  3.0
4	Contact:        Mark Godfrey <mark.godfrey@stericsson.com>
5	Description:    Attribute for calibrating ST-Ericsson AB8500 Real Time Clock
6			The rtc_calibration attribute allows the userspace to
7	                calibrate the AB8500.s 32KHz Real Time Clock.
8	                Every 60 seconds the AB8500 will correct the RTC's value
9	                by adding to it the value of this attribute.
10	                The range of the attribute is -127 to +127 in units of
11	                30.5 micro-seconds (half-parts-per-million of the 32KHz clock)
12	Users:          The /vendor/st-ericsson/base_utilities/core/rtc_calibration
13	                daemon uses this interface.
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