https://community.nxp.com/t5/i-MX-Processors/Hwclock-for-RTC1-gets-Clock-tick-timeout-error/m-p/1563588#M198294 <P>I am working on the IMX 8M plus board with Linux running on it.</P><P>While investigating the /dev/rtc entries for&nbsp; with the pcf85263.c driver, observed the hwclock is not working for /dev/rtc1. RTC1 is an i2c based rtc clock.</P><P>I am getting the below clock time tick error</P><P><SPAN># /sbin/hwclock --verbose --show -f /dev/rtc1</SPAN><BR /><SPAN>hwclock from util-linux 2.36.2</SPAN><BR /><SPAN>System Time: 1666881296.325971</SPAN><BR /><SPAN>Using the rtc interface to the clock.</SPAN><BR /><SPAN>Last drift adjustment done at 1666881131 seconds after 1969</SPAN><BR /><SPAN>Last calibration done at 1666881131 seconds after 1969</SPAN><BR /><SPAN>Hardware clock is on local time</SPAN><BR /><SPAN>Assuming hardware clock is kept in local time.</SPAN><BR /><SPAN>Waiting for clock tick...</SPAN><BR /><SPAN>hwclock: select() to /dev/rtc1 to wait for clock tick timed out</SPAN><BR /><SPAN>...synchronization failed.</SPAN></P> Fri, 02 Dec 2022 15:27:02 GMT sneha_mohan 2022-12-02T15:27:02Z https://community.nxp.com/t5/i-MX-Processors/Hwclock-for-RTC1-gets-Clock-tick-timeout-error/m-p/1563588#M198294 <P>I am working on the IMX 8M plus board with Linux running on it.</P><P>While investigating the /dev/rtc entries for&nbsp; with the pcf85263.c driver, observed the hwclock is not working for /dev/rtc1. RTC1 is an i2c based rtc clock.</P><P>I am getting the below clock time tick error</P><P><SPAN># /sbin/hwclock --verbose --show -f /dev/rtc1</SPAN><BR /><SPAN>hwclock from util-linux 2.36.2</SPAN><BR /><SPAN>System Time: 1666881296.325971</SPAN><BR /><SPAN>Using the rtc interface to the clock.</SPAN><BR /><SPAN>Last drift adjustment done at 1666881131 seconds after 1969</SPAN><BR /><SPAN>Last calibration done at 1666881131 seconds after 1969</SPAN><BR /><SPAN>Hardware clock is on local time</SPAN><BR /><SPAN>Assuming hardware clock is kept in local time.</SPAN><BR /><SPAN>Waiting for clock tick...</SPAN><BR /><SPAN>hwclock: select() to /dev/rtc1 to wait for clock tick timed out</SPAN><BR /><SPAN>...synchronization failed.</SPAN></P> Fri, 02 Dec 2022 15:27:02 GMT https://community.nxp.com/t5/i-MX-Processors/Hwclock-for-RTC1-gets-Clock-tick-timeout-error/m-p/1563588#M198294 sneha_mohan 2022-12-02T15:27:02Z https://community.nxp.com/t5/i-MX-Processors/Hwclock-for-RTC1-gets-Clock-tick-timeout-error/m-p/1565564#M198428 <P>Please check and debug your RTC1 driver.</P> Wed, 07 Dec 2022 03:48:26 GMT https://community.nxp.com/t5/i-MX-Processors/Hwclock-for-RTC1-gets-Clock-tick-timeout-error/m-p/1565564#M198428 Zhiming_Liu 2022-12-07T03:48:26Z