EVMK2H Configuration for using both DDR3A and DDR3B to ARM Linux

Claes Nordmark

Prodigy 10 points

What do I need to modify in order to use both DDR3A and DDR3B for linux on the keystone 2?

I guess I need to manipulate dts and u-boot?

It has stock config so 2 GB intern and 2GB extern so-dimm.

over 11 years ago

0 Rex Chang over 11 years ago

TI__Guru 50170 points

Hi, Claes,

It is not recommanded to access DDR3B from Linux. DDr3B does not have DMA coherency and becomes expensive to be accessed, and TI is moving away from it by removing 3B in next generation product. If you still want to access it, please refers to the exploring chapter of the User's Guide, http://processors.wiki.ti.com/index.php/MCSDK_UG_Chapter_Exploring#LPAE. It will be similar to ddr3a in the text.

Processors

Processors forum

EVMK2H Configuration for using both DDR3A and DDR3B to ARM Linux