[Letux-kernel] 2GB vs. 4GB Pyra RAM tests

Michael Mrozek EvilDragon at openpandora.org
Thu Aug 17 18:26:21 CEST 2017


On Do, 2017-08-17 at 17:58 +0200, Matthijs van Duin wrote:

400MHz speed would be for DDR3-800.
That was brought up because the memory distributor mentioned that you
have different timings with different speeds.

He has no idea which speed we're using. I just summarized his reply
here :)

> On 17 August 2017 at 17:48, Tony Lindgren <tony at atomide.com> wrote:
> > We have omap_ddr_clk() return 531840000 in u-boot, so not 400 MHz.
> > But since the current timings work at 1.42V, I don't see why they
> > would need to be tweaked for 1.35V.
> 
> They shouldn't have to be. I'm not sure why 400 MHz was brought up in
> the first place, I assumed perhaps as experiment (although I'm not
> sure what exactly we would learn from it).
> 
-- 
Greetings,

Michael Mrozek

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