diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-class-rtc-rtc0-device-rtc_calibration')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-rtc-rtc0-device-rtc_calibration | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-rtc-rtc0-device-rtc_calibration b/Documentation/ABI/testing/sysfs-class-rtc-rtc0-device-rtc_calibration index 4cf1e72222d9..ee8ed6494a01 100644 --- a/Documentation/ABI/testing/sysfs-class-rtc-rtc0-device-rtc_calibration +++ b/Documentation/ABI/testing/sysfs-class-rtc-rtc0-device-rtc_calibration @@ -1,11 +1,13 @@ -What: Attribute for calibrating ST-Ericsson AB8500 Real Time Clock +What: /sys/class/rtc/rtc0/device/rtc_calibration Date: Oct 2011 KernelVersion: 3.0 Contact: Mark Godfrey <mark.godfrey@stericsson.com> -Description: The rtc_calibration attribute allows the userspace to +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 |