On 23/03/2020 20:43:39+0800, xiaolinkui wrote: > If the rtc driver is compiled into a module, hctosys can't > read the rtc clock during system startup. > The dmesg log will have the following information: > > [ 2.286512] hctosys: unable to open rtc device (rtc0) > > So the rtc driver configuration we need cannot be set to m. > Wow, you are not even trying, the solution is to not use hctosys. -- Alexandre Belloni, Bootlin Embedded Linux and Kernel engineering https://bootlin.com