Re: [linux-sunxi] Is there any way to reduce DRAM power usage on sun7i?

2014-10-31 Thread Siarhei Siamashka
On Tue, 28 Oct 2014 06:24:56 -0700 (PDT) Toroshin Dmitry wrote: > It seems that DRAM controller uses too much power. Well, it would be really nice if you could confirm this theory by doing actual power consumption measurements. This is best done in u-boot, because there we can work with or with

[linux-sunxi] Is there any way to reduce DRAM power usage on sun7i?

2014-10-28 Thread Toroshin Dmitry
It seems that DRAM controller uses too much power. While i was trying to fix mystically broken dram self-refresh mode in sunxi kernel on my tablet, i wrote this patch: http://pastebin.com/6My1nzqq It allows to skip entering self-refresh mode and disabling Pll5 and avoids crash on Wexler tab 7200