RTC Issue: PCF85263

rizwanm — Sat, 27 Jul 2019 08:16:31 GMT

Hi,

I am using RTC PCF85263 in our imx6 Quad custom board.

I am always getting the below error.

Oscillator stop detected, date/time is not reliable.
Oscillator stop detected, date/time is not reliable.
rtc core: registered rtc-pcf85263 as rtc0
PCF85263 RTC (irqpin=None irq=0)
Oscillator stop detected, date/time is not reliable.
hctosys: unable to read the hardware clock
Oscillator stop detected, date/time is not reliable.

This error will comes when we write the date and try to read the same. Below the steps followed

1. Set current date using "date -s" command

2. hwclock -w

3. hwclock

Could you please help for the same.

Best Regards,
Rizwan M

Re: RTC Issue: PCF85263

igorpadykov — Mon, 29 Jul 2019 23:13:47 GMT

Hi Rizwan

one can try to debug it using AN4553 Using Open Source Debugging Tools for

Linux on i.MX Processors
https://www.nxp.com/docs/en/application-note/AN4553.pdf

i2c communication can be tested with sdk baremetal test (1.1.0_iMX6_Platform_SDK.zip)

SMP Enable in IMX6

Best regards
igor
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RTC Issue: PCF85263

Re: RTC Issue: PCF85263