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https://www.kernel.org/doc/html/latest/admin-guide/rtc.html
Real Time Clock (RTC) Drivers for Linux¶. When Linux developers talk about a “Real Time Clock”, they usually mean something that tracks wall clock time and is battery backed so that it works even with system power off.
https://bootlin.com/blog/linux-kernel-support-for-microcrystal-rtcs/
The RV-1805 RTC is similar to the Abracon 1805 one, for which a driver already existed in the Linux kernel. Therefore, the support for the RV-1805 RTC was added in the same driver, rtc-abx80x.c. The patch which adds the support of this RTC is already upstream since v4.5 (see Free-Electrons contributions to linux 4.5).
https://www.linux.com/tutorials/wake-linux-rtc-alarm-clock/
Nov 30, 2012 · This how-to is for kernel versions 2.6.22 and later; run uname -r to see your kernel version. Your Linux kernel should already have everything you need, unless you or your distribution maintainer have removed RTC support. So check your kernel configuration file, like this example: $ grep -i rtc /boot/config-3.2.0-23-generic CONFIG_HPET_EMULATE ...
http://www.linuxmisc.com/15-linux-kernel/b32fe3d04c88eacf.htm
Kernel Real Time Clock (RTC) Support for I2C Devices I have been unable to find an answer for this in the LKML archives, so I am hoping someone on this list might perhaps have some insight or pointers
https://www.digi.com/resources/documentation/digidocs/90001546/reference/bsp/cc6/r_real_time_clock.htm
Apr 25, 2017 · For the DA9063 RTC, Dialog DA9063 RTC (CONFIG_RTC_DRV_DA9063), which is enabled as built-in on the default ConnectCore 6 SBC kernel configuration file. For the SNVS RTC, Freescale SNVS RTC support (CONFIG_RTC_DRV_SNVS), which is also enabled as built-in on the default kernel configuration file. Platform driver mapping
https://www.mjmwired.net/kernel/Documentation/rtc.txt
Based on kernel version 4.16.1.Page generated on 2018-04-09 11:53 EST.. 1 ===== 2 Real Time Clock (RTC) Drivers for Linux 3 ===== 4 5 When Linux developers talk about a "Real Time Clock", they usually mean 6 something that tracks wall clock time and is battery backed so that it …
https://www.digi.com/resources/documentation/digidocs/embedded/dey/2.4/cc6/bsp_r_rtc_cc6cc6qp
The Real-Time Clock (RTC) is a hardware component that tracks wall clock time and is battery backed so it works even with system power off. Such clocks will normally not track the local time zone or daylight saving time but will instead be set to Coordinated Universal Time.
https://forum.proxmox.com/threads/rtc-not-in-kernel.5081/
Nov 13, 2010 · If you get "module rtc not found", then your distro (or you) answered either Y or N to the CONFIG_RTC question when configuring. To find out which, skip down a bit. If you get "module already loaded" or no output at all, then you have RTC support in your kernel already (CONFIG_RTC was set to M, and the module is now loaded). Continue with vmware.
https://community.nxp.com/thread/337638
Jun 04, 2015 · rootfs built with yocto master-next, image based on fsl-image-multimedia and linux kernel is 3.10.31 BETA. I activated the RTC support in linux kernel (Device Drivers → Real Time Clock → Freescale SNVS RTC support), and now, I have a "rtc and "rtc0" in /dev. My issue:-I use a ntp server to set system clock-"hwclock -w" to set the RTCReviews: 13
https://developer.toradex.com/knowledge-base/how-to-use-the-real-time-clock-in-linux
Jun 11, 2018 · Real Time Clock in Linux. Two clocks are important in Linux: a ‘hardware clock’, also known as RTC, CMOS or BIOS clock. This is the battery backed clock that keeps time even when the system is shut down. The second clock is called the ‘system clock’ or 'kernel clock' and is maintained by the operating system. At boot time, the hardware ...
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