I have a freescale imx6 target and a BSP based on sabrelite.
Additionally I have verified that the same thing happens on the sabrelite board with the released BSP.

If you compare the system clock by issuing the 'date' command and compare it to a clock kept by an RTC, the system clock
 loses about 4 seconds a day.

Has anyone seen this and know of a correction for the setup on the imx6, instead of just setting up a crontab to sync 
the clock to the rtc every hour?