I do not know why but Radxa’s engineers decided to use “rk3308k.dtsi” as the base for ROCK Pi S device tree while I do believe it was meant for a different variant of the SoC (RK3308K).
I mentioned it last year:
Since the first Armbian release for ROCK Pi S the base DTS has been switched to “rk3308.dtsi” with 70/85/115 ºC trip/crit points.
Here are the sbc-bench results without throttling: http://ix.io/1XKY
All in all it was never meant to be a performance SoC being severely limited by memory interface:
- 16-bit RAM bus
- 589MHz(*2) DDR clock in Rockchip’s DDR loader
Nonetheless IMHO it is doing well and has a great benefit of using ~0.4W idle while being connected to the network and ~0.2W without it.