Print Page - Test DDR

Title: Test DDR
Post by: ph.fouquet on May 22, 2018, 05:40:39 PM

Hi,

I tested on my A20 Olinuxino micro rev E, the DDR3 performance.
I use the test describe at :

http://linux-sunxi.org/A10_DRAM_Controller_Calibration (http://linux-sunxi.org/A10_DRAM_Controller_Calibration)
http://linux-sunxi.org/A10_DRAM_Controller_Calibration_(impedance_configuration_example)#Searching_for_optimal_.22dram_emr1.22 (http://linux-sunxi.org/A10_DRAM_Controller_Calibration_(impedance_configuration_example)#Searching_for_optimal_.22dram_emr1.22)

But I never had some data that will proche of the test upper. My result of this test is completely red (no data can be calculate)

Somme body have use this type of test?
Am I do something wrong in the test protocole?

Thank for your response

Philippe

Title: Re: Test DDR
Post by: JohnS on May 22, 2018, 10:39:29 PM

Might make more sense to ask on a linux-sunxi place.

I expect Olimex already set the values to ones known to work, however.

John

Title: Re: Test DDR
Post by: ph.fouquet on May 23, 2018, 10:03:53 AM

Thank for you reply.
I will ask on sunxi-linux

Philippe

Olimex Support Forum

OLinuXino Android / Linux boards and System On Modules => A20 => Topic started by: ph.fouquet on May 22, 2018, 05:40:39 PM