Re: [U-Boot] Very slow mtest on i.MX6UL over dual-die DDR3 (two chip selects)

Hi Fabio,

On Thu, 18 May 2017 17:52, Fabio Estevam wrote:

I got very slow performance with MX6UL when U-Boot is loaded via serial download mode.

That's it, actually! I was booting the target via USB, booting from the NAND shows normal performance.

This gets fixed by setting the SMP bit: https://patchwork.ozlabs.org/patch/747074/

I don't have that patch. I guess a similar code exists somewhere that is not entered when booting from USB.

Many thanks for your help! -- Héctor Palacios