On 06/13/2011 03:05 PM, Somebody in the thread at some point said:
== Thomas Abraham<thomas-ab> ==
=== Highlights ===
Completed the power measurement with and without memory regions patches, but did not find any savings in power consumed.
Did further testing at hardware level (with only u-boot executing, no linux) and found a issue with memory controller settings. After fixing the issue, there is about 60mA of savings when all the banks of the 4 DDR3 modules connected to one memory controller are kept in precharge power-down mode versus when read/write activity are active on them.
That's really cool.
It might be an idea to measure and report the power in Watts. 60mA on 1.5V DDR3 rail is very different than if you are measuring at the 5VDC in.
-Andy