i.MX8Mmini EVK SNVS RTC can't backup

Danube — Fri, 10 May 2019 10:44:26 GMT

We test CPU SNVS RTC backup function. When we set "reboot" command.

We see CPU date in first login time.

BSP is Linux-4.14.78

We use 4.14.78 default demo image

Log file

NXP i.MX Release Distro 4.14-sumo imx8mmevk ttymxc1

imx8mmevk login: root
Last login: Fri May 10 10:22:35 UTC 2019 on tty7
[ 10.340923] audit: type=1006 audit(1557483758.779:3): pid=3700 uid=0 old-auid=4294967295 auid=0 tty=(none) old-ses=4294967295 ses=2 res=1
root@imx8mmevk:~# date
Fri May 10 10:22:41 UTC 2019

~~~ Wait about 1 min

root@imx8mmevk:~# date
Fri May 10 10:23:42 UTC 2019

NXP i.MX Release Distro 4.14-sumo imx8mmevk ttymxc1

imx8mmevk login: root
Last login: Fri May 10 10:22:35 UTC 2019 on tty7
[ 10.118980] audit: type=1006 audit(1557483758.671:3): pid=3703 uid=0 old-auid=4294967295 auid=0 tty=(none) old-ses=4294967295 ses=2 res=1
root@imx8mmevk:~# date
Fri May 10 10:22:39 UTC 2019

Re: i.MX8Mmini EVK SNVS RTC can't backup

weidong_sun — Mon, 13 May 2019 06:24:11 GMT

Hello Apollo,

Operate RTC hardware, you should use "hwclock" command to update time in RTC.

Try it, please!
Have a nice day!

BR,

Weidong

topic Re: i.MX8Mmini EVK SNVS RTC can't backup in i.MX Processors

i.MX8Mmini EVK SNVS RTC can't backup

Re: i.MX8Mmini EVK SNVS RTC can't backup