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commit d1edce71135cc6d98c0a4b5729774542b676e769 Author: sophgo-forum-service <forum_service@sophgo.com> Date: Fri Mar 15 16:07:33 2024 +0800 [fix] recommend using ssh method to clone repo. [fix] fix sensor driver repo branch name.
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15 lines
763 B
Plaintext
What: /sys/class/rtc/rtc0/device/rtc_calibration
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Date: Oct 2011
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KernelVersion: 3.0
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Contact: Mark Godfrey <mark.godfrey@stericsson.com>
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Description: Attribute for calibrating ST-Ericsson AB8500 Real Time Clock
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The rtc_calibration attribute allows the userspace to
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calibrate the AB8500.s 32KHz Real Time Clock.
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Every 60 seconds the AB8500 will correct the RTC's value
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by adding to it the value of this attribute.
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The range of the attribute is -127 to +127 in units of
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30.5 micro-seconds (half-parts-per-million of the 32KHz clock)
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Users: The /vendor/st-ericsson/base_utilities/core/rtc_calibration
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daemon uses this interface.
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