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91 lines
2.7 KiB
91 lines
2.7 KiB
What: /sys/class/rtc/ |
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Date: March 2006 |
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KernelVersion: 2.6.17 |
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Contact: [email protected] |
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Description: |
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The rtc/ class subdirectory belongs to the RTC subsystem. |
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What: /sys/class/rtc/rtcX/ |
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Date: March 2006 |
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KernelVersion: 2.6.17 |
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Contact: [email protected] |
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Description: |
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The /sys/class/rtc/rtc{0,1,2,3,...} directories correspond |
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to each RTC device. |
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What: /sys/class/rtc/rtcX/date |
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Date: March 2006 |
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KernelVersion: 2.6.17 |
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Contact: [email protected] |
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Description: |
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(RO) RTC-provided date in YYYY-MM-DD format |
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What: /sys/class/rtc/rtcX/hctosys |
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Date: September 2009 |
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KernelVersion: 2.6.32 |
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Contact: [email protected] |
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Description: |
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(RO) 1 if the RTC provided the system time at boot via the |
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CONFIG_RTC_HCTOSYS kernel option, 0 otherwise |
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What: /sys/class/rtc/rtcX/max_user_freq |
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Date: October 2007 |
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KernelVersion: 2.6.24 |
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Contact: [email protected] |
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Description: |
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(RW) The maximum interrupt rate an unprivileged user may request |
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from this RTC. |
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What: /sys/class/rtc/rtcX/name |
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Date: March 2006 |
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KernelVersion: 2.6.17 |
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Contact: [email protected] |
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Description: |
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(RO) The name of the RTC corresponding to this sysfs directory |
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What: /sys/class/rtc/rtcX/range |
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Date: January 2018 |
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KernelVersion: 4.16 |
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Contact: [email protected] |
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Description: |
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Valid time range for the RTC, as seconds from epoch, formatted |
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as [min, max] |
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What: /sys/class/rtc/rtcX/since_epoch |
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Date: March 2006 |
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KernelVersion: 2.6.17 |
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Contact: [email protected] |
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Description: |
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(RO) RTC-provided time as the number of seconds since the epoch |
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What: /sys/class/rtc/rtcX/time |
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Date: March 2006 |
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KernelVersion: 2.6.17 |
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Contact: [email protected] |
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Description: |
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(RO) RTC-provided time in 24-hour notation (hh:mm:ss) |
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What: /sys/class/rtc/rtcX/offset |
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Date: February 2016 |
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KernelVersion: 4.6 |
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Contact: [email protected] |
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Description: |
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(RW) The amount which the rtc clock has been adjusted in |
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firmware. Visible only if the driver supports clock offset |
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adjustment. The unit is parts per billion, i.e. The number of |
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clock ticks which are added to or removed from the rtc's base |
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clock per billion ticks. A positive value makes a day pass more |
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slowly, longer, and a negative value makes a day pass more |
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quickly. |
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What: /sys/class/rtc/rtcX/wakealarm |
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Date: February 2007 |
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KernelVersion: 2.6.20 |
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Contact: [email protected] |
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Description: |
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(RW) The time at which the clock will generate a system wakeup |
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event. This is a one shot wakeup event, so must be reset after |
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wake if a daily wakeup is required. Format is seconds since the |
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epoch by default, or if there's a leading +, seconds in the |
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future, or if there is a leading +=, seconds ahead of the |
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current alarm.
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