On Mon, Aug 24, 2020 at 1:10 AM Mark Kettenis <mark.kette...@xs4all.nl>
wrote:

> > From: Archimedes Gaviola <archimedes.gavi...@gmail.com>
> > Date: Mon, 24 Aug 2020 01:04:23 +0800
> >
> > On Sun, Aug 23, 2020 at 10:50 PM Mark Kettenis <mark.kette...@xs4all.nl>
> > wrote:
> >
> >  > From: Archimedes Gaviola <archimedes.gavi...@gmail.com>
> >  > Date: Sun, 23 Aug 2020 22:36:49 +0800
> >  >
> >  > Hi,
> >  >
> >  > Good day!
> >  >
> >  > How to enable DS3231 real-time clock in Raspberry Pi 4B? In Raspberry
> >  Pi 3B
> >  > these 2 lines below in the config.txt works.
> >  >
> >  > dtparam=i2c_arm=on
> >  > dtoverlay=i2c-rtc,ds3231
> >  >
> >  > and resolve the dmesg messages below.
> >  >
> >  > WARNING: clock lost 8 days
> >  > WARNING: CHECK AND RESET THE DATE!
> >  >
> >  > This system is not always connected to the Internet.
> >
> >  I think only the dtoverlay line is needed.  But yes, this works as
> >  long as the i2c-rtc overlay file is present in the overlays
> >  subdirectory of the firmware partition of your boot medium.
> >
> >  Many of the other chip types supported by the i2c-rtc overlay are
> >  supported by OpenBSD as well.  Feel free to send me any modules with
> >  unsupported chips, and I'll make them work.
> >
> >  Cheers,
> >
> >  Mark
> >
> >  Hi Mark,
> >
> > Thanks for your prompt response! I tried it now by pulling-out dtbo file
> here
> >
> >
> https://github.com/raspberrypi/firmware/blob/master/boot/overlays/i2c-rtc.dtbo
> >
> >
> > and put it in the overlays directory and then update the system time and
> date
> > to current using NTP via $ rdate ntp.pool.org and then reboot. The
> system
> > will still show up
> >
> > WARNING: clock lost 8 days
> > WARNING: CHECK AND RESET THE DATE!
>
> Without showing the complete dmesg we can't help you.
>
>
Hi Mark,

Please see attached dmesg.

Thanks and best regards,
Archimedes
openbsd67rpi4b# dmesg
OpenBSD 6.7-current (GENERIC.MP) #775: Wed Aug 19 00:17:01 MDT 2020
    dera...@arm64.openbsd.org:/usr/src/sys/arch/arm64/compile/GENERIC.MP
real mem  = 1996668928 (1904MB)
avail mem = 1903022080 (1814MB)
random: good seed from bootblocks
mainbus0 at root: ACPI
psci0 at mainbus0: PSCI 1.1, SMCCC 1.2
cpu0 at mainbus0 mpidr 0: ARM Cortex-A72 r0p3
cpu0: 48KB 64b/line 3-way L1 PIPT I-cache, 32KB 64b/line 2-way L1 D-cache
cpu0: 1024KB 64b/line 16-way L2 cache
cpu1 at mainbus0 mpidr 1: ARM Cortex-A72 r0p3
cpu1: 48KB 64b/line 3-way L1 PIPT I-cache, 32KB 64b/line 2-way L1 D-cache
cpu1: 1024KB 64b/line 16-way L2 cache
cpu2 at mainbus0 mpidr 2: ARM Cortex-A72 r0p3
cpu2: 48KB 64b/line 3-way L1 PIPT I-cache, 32KB 64b/line 2-way L1 D-cache
cpu2: 1024KB 64b/line 16-way L2 cache
cpu3 at mainbus0 mpidr 3: ARM Cortex-A72 r0p3
cpu3: 48KB 64b/line 3-way L1 PIPT I-cache, 32KB 64b/line 2-way L1 D-cache
cpu3: 1024KB 64b/line 16-way L2 cache
efi0 at mainbus0: UEFI 2.7
efi0: https://github.com/pftf/RPi4 rev 0x10000
smbios0 at efi0: SMBIOS 3.3.0
smbios0: vendor https://github.com/pftf/RPi4 version "UEFI Firmware v1.19" date 
08/13/2020
smbios0: Raspberry Pi Foundation Raspberry Pi 4 Model B
apm0 at mainbus0
ampintc0 at mainbus0 nirq 256, ncpu 4 ipi: 0, 1: "interrupt-controller"
agtimer0 at mainbus0: tick rate 54000 KHz
acpi0 at mainbus0: ACPI 6.3
acpi0: sleep states
acpi0: tables DSDT FACP CSRT DBG2 GTDT APIC PPTT BGRT
acpi0: wakeup devices
"BCM2849" at acpi0 not configured
"BCM2835" at acpi0 not configured
"BCM2854" at acpi0 not configured
"ACPI0004" at acpi0 not configured
xhci0 at acpi0 XHC0 addr 0x600000000/0x1000 irq 175, xHCI 1.0
usb0 at xhci0: USB revision 3.0
uhub0 at usb0 configuration 1 interface 0 "Generic xHCI root hub" rev 3.00/1.00 
addr 1
"ACPI0007" at acpi0 not configured
"ACPI0007" at acpi0 not configured
"ACPI0007" at acpi0 not configured
"ACPI0007" at acpi0 not configured
"ACPI0004" at acpi0 not configured
"BCM2848" at acpi0 not configured
"BCM2850" at acpi0 not configured
"BCM2856" at acpi0 not configured
"BCM2845" at acpi0 not configured
"BCM2841" at acpi0 not configured
"BCM2841" at acpi0 not configured
"BCM2838" at acpi0 not configured
"BCM2839" at acpi0 not configured
"BCM2844" at acpi0 not configured
pluart0 at acpi0 URT0 addr 0xfe201000/0x1000 irq 153
"BCM2836" at acpi0 not configured
"BCM2EA6" at acpi0 not configured
"MSFT8000" at acpi0 not configured
"BCM2847" at acpi0 not configured
"BCM2855" at acpi0 not configured
bse0 at acpi0 ETH0 addr 0xfd580000/0x10000 irq 189: address dc:a6:32:36:b6:70
brgphy0 at bse0 phy 1: BCM54210E 10/100/1000baseT PHY, rev. 2
simplefb0 at mainbus0: 1280x800, 32bpp
wsdisplay0 at simplefb0 mux 1: console (std, vt100 emulation)
wsdisplay0: screen 1-5 added (std, vt100 emulation)
uhub1 at uhub0 port 1 configuration 1 interface 0 "VIA Labs USB2.0 Hub" rev 
2.10/4.20 addr 2
umass0 at uhub1 port 1 configuration 1 interface 0 "Generic Mass Storage" rev 
2.00/1.01 addr 3
umass0: using SCSI over Bulk-Only
scsibus0 at umass0: 2 targets, initiator 0
sd0 at scsibus0 targ 1 lun 0: <Generic, Flash Disk, 8.07> removable
sd0: 14765MB, 512 bytes/sector, 30238720 sectors
uhidev0 at uhub1 port 4 configuration 1 interface 0 "A4Tech USB Keyboard" rev 
2.00/1.05 addr 4
uhidev0: iclass 3/1
ukbd0 at uhidev0: 8 variable keys, 6 key codes
wskbd0 at ukbd0: console keyboard, using wsdisplay0
uhidev1 at uhub1 port 4 configuration 1 interface 1 "A4Tech USB Keyboard" rev 
2.00/1.05 addr 4
uhidev1: iclass 3/0, 1 report id
uhid0 at uhidev1 reportid 1: input=4, output=0, feature=0
vscsi0 at root
scsibus1 at vscsi0: 256 targets
softraid0 at root
scsibus2 at softraid0: 256 targets
bootfile: sd0a:/bsd
boot device: sd0
root on sd0a (8dc5c30ddf297edf.a) swap on sd0b dump on sd0b
WARNING: clock lost 8 days
WARNING: CHECK AND RESET THE DATE!

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