We have the the Layerscape LS1028ARDB reference board and have successfully loaded the Ubuntu-based Linux image per the LS1028A BSP User Guide, Rev. 0.3, 04/2019. When we try to query the real-time clock, we get the following error:
root@NXP-1:~# hwclock -r
[12259.192870] rtc-pcf2127-i2c 4-0051: pcf2127_rtc_read_time: read error
[12259.199734] rtc-pcf2127-i2c 4-0051: pcf2127_rtc_read_time: read error
[12259.206779] rtc-pcf2127-i2c 4-0051: pcf2127_rtc_read_time: read error
hwclock: ioctl(RTC_RD_TIME) to /dev/rtc0 to read the time failed: No such device or address
root@NXP-1:~#
The result is the same on both units we have tested so far.We expected get either an error about lack a battery / lack of time in the RTC, or a successful read. The "no such device errror" seems like a hardware or driver problem. Please advise on how to fix. Thank you.
