On Wed, Feb 12, 2014 at 2:20 AM, Michael Mrozek EvilDragon@openpandora.org wrote:
Okay, as we might be able to get other SoCs (Allwinner / Qualcomm) as well, I wanted to test out how much power consumption the OMAP5 has.
Not an easy task with our devboard... I did some quick measurements:
Without even being powered up, the devboard uses 0,21W... so I guess the EVM is not really optimized...? Nikolaus, any idea where these 0,21W come from? (maybe the serial USB connector?)
Well, as soon as I switch the EVM on, it eats up 2,25W (which is quite a lot!)
How is this measured, and at which point?
...
Do we know if we are even using power saving features of the SoC yet? (it doesn't sound like we do, as it seems weird to me that booting needs as much power as sitting around idling).
It doesn't look like it has full idle powersaving to me too, but on load it should be close to what we'll get I guess. The problem is we don't know how much various peripherals that we don't need draw on that board..
Grazvydas