Several my past colleagues in Vietnam contributed to the development of this chip, so excited.
Image recognition Engine with SH is the greatest advantage of this chip over other ARM-based chips, i think.
I think a comparison of power used by an infotainment system versus power used by the drive train is in order here. I suspect that it's like expecting your electric bill to change because you unplug your cell phone charger when not charging your phone...
I think the expectation the automobile makers have is that the infotainment systems they provide need to be at least as good as consumers are used on mobile devices.
As to power saving, the existence of runtime electricity generation and batteries does not reduce the power saving from big-little. I am sure the argument runs that if big-little was not used those infotainment systems would consume more power, run hotter in seat backs and the dashboard, and be an unnecessary drag on the primary fuel system.
The power savings from "big little" may not be significant in case if automobiles, where you have a runtime power generation and a huge battery. My question is do automotive apps even need an 8 core app processor? Seems like an overkill to me.
We are not told this explicitly by Renesas, but big-little will have the same advantage that it does in hand-held devices - more power efficient execution of functions compared with non big-little systems.
This is because a lower processing load can be performed on a little core with the big partner switched off. The big core wakes up only when needed for a greater processing load, at which point the small core switches off.