topic Re: LS1088A DDR Size Problem in Layerscape

LS1088A DDR Size Problem

TahaBenderli — Tue, 26 Oct 2021 12:01:32 GMT

Hello,

we are having a DDR4 size problem on LS1088a platform. We have 4GB DDR4 on the board. When u-boot starts it is confirmed that board has 4GB DDR4. But when we checked on kernel with cat /proc/meminfo or free commands, it shows that RAM is 2GB. Do you have any idea why are we having mismatch DDR size in u-boot and kernel ?

Attached photos you can see the differences.

Re: LS1088A DDR Size Problem

mcbridematt — Wed, 27 Oct 2021 00:52:35 GMT

The 2GB is being reserved for the DPAA2 MC memory. The best solution is to delete the "mcmemsize" variable from your U-Boot configuration which will reduce the total reservation down to 512MB.

Re: LS1088A DDR Size Problem

TahaBenderli — Wed, 27 Oct 2021 08:10:22 GMT

Thanks. I changed the value of the mcmemsize but it seems solution is deleting it. Now DDR size is 3.6 Gbytes.