is RTC necessary for RK3288 / linux kernel?

isle · Posted at 10/31/2016 09:58:13

Hi bschiett
in the core module ,the 3288 need a 32k clock which is supplied by RTC

whithout this ,the rk3288 have no the temparature protection.
and the other thing ,when go to sleep ,the rk3288 change it's clock from 24M to this 32K.
so we suggest you to hold it .

isle · Posted at 11/2/2016 09:56:57

Hi bschiett

here :

please refer to the chapter of CRU :
http://bbs.t-firefly.com/forum.p ... =275&extra=page%3D1

isle · Posted at 11/3/2016 09:53:48

Hi bschiett
the battery is not necessary.
It need to be attached only if you want the CPU to be started automatically .

isle · Posted at 11/7/2016 10:22:26

Hi bschiett
Yes,It is not necessary.

Yes, when the MCU is gone,you can boot the system by press the POWER key.