Hey, When I boot my A83T I get the following bootlog [1]. After some debugging, I found out that the function call: clk_hw_get_num_parents() returns 2. After a look in the devicetree I found out that this value should be 1, since we only have one parent clock [3]. Setting the variable num_parents to 1 fixes the problem, but this is no soultion. Regards, Philipp [1]: https://pastebin.com/5c7hxjsS [2]: http://lxr.bootlin.com/linux/v4.15/source/drivers/rtc/rtc-ac100.c# L180 [3]: http://lxr.bootlin.com/linux/v4.15/source/arch/arm/boot/dts/sun8i- a83t-bananapi-m3.dts#L159