Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) What:           /sys/class/rtc/rtc0/device/rtc_calibration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) Date:           Oct 2011
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) KernelVersion:  3.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) Contact:        Mark Godfrey <mark.godfrey@stericsson.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) Description:    Attribute for calibrating ST-Ericsson AB8500 Real Time Clock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 		The rtc_calibration attribute allows the userspace to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)                 calibrate the AB8500.s 32KHz Real Time Clock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)                 Every 60 seconds the AB8500 will correct the RTC's value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)                 by adding to it the value of this attribute.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)                 The range of the attribute is -127 to +127 in units of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)                 30.5 micro-seconds (half-parts-per-million of the 32KHz clock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) Users:          The /vendor/st-ericsson/base_utilities/core/rtc_calibration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)                 daemon uses this interface.