Drivers/rtc/hctosys.c unable to open rtc device rtc0 raspberry

*rtc/hctosys.c Problem during kernel boot @ John Whitmore ` John Stultz 0 siblings, 1 reply; 14+ messages in thread From: John Whitmore @ UTC (permalink / raw) To: linux-kernel; +Cc: www.doorway.ru I'm having a problem with a DS SPI based RTC chip and rtc/hctosys.c on the kernel of the RaspberryPi.  · root@rockpi-4b:~# dmesg | grep rtc [ ] hctosys: unable to open rtc device (rtc0) [ ] rkrtc rkrtc: registered as rtc0 [ ] [drm] Cannot find any crtc or sizes [ ] [drm] Cannot find any crtc or sizes. You can see that rkrtc is still registered as rtc0 and ds isn't registered at all.  · Flyspray, a Bug Tracking System written in PHP. This harmless message is due to an incomplete implementation of FS# CONFIG_RTC_DRV_CMOS is still set to 'm', but FS# requested that it be set to 'y', along with RTC_CLASS and RTC_LIB. Without building in RTC_DRV_CMOS, this is actually not very useful, as the kernel fails to read the hardware clock (this .

# Real Time Clock # CONFIG_RTC_LIB=y CONFIG_RTC_CLASS=y CONFIG_RTC_HCTOSYS=y CONFIG_RTC_HCTOSYS_DEVICE="rtc" # CONFIG_RTC_DEBUG is not set # # RTC interfaces # CONFIG_RTC_INTF_SYSFS=y CONFIG_RTC_INTF_PROC=y CONFIG_RTC_INTF_DEV=y # CONFIG_RTC_INTF_DEV_UIE_EMUL is not set # # RTC drivers # CONFIG_RTC_DRV_CMOS=y CONFIG_RTC_DRV_X=m CONFIG_RTC. config RTC_HCTOSYS_DEVICE string "RTC used to set the system time" depends on RTC_HCTOSYS = y default "rtc0" help The RTC device that will be used to (re)initialize the system clock, usually rtc0. Initialization is done when the system starts up, and when it resumes from a low power state. * rtc/hctosys.c Problem during kernel boot @ John Whitmore ` John Stultz 0 siblings, 1 reply; 14+ messages in thread From: John Whitmore @ UTC (permalink / raw) To: linux-kernel; +Cc: www.doorway.ru I'm having a problem with a DS SPI based RTC chip and rtc/hctosys.c on the kernel of the.

29 авг. г. this device operates at V (from 3 to 5V) and does not need a kernel: [ ] hctosys: unable to open rtc device (rtc0) Fri Oct 13 февр. г. A Raspberry Pi is off the shelf not equipped with a real time clock. an entry stating "hctosys: unable to open rtc device (rtc0)". 3 апр. г. [ ] rtc-ds probe of failed with error [ ] drivers/rtc/hctosys.c: unable to open rtc device (rtc0).