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