iMX linux 5.4 does not boot on iMX6SL with DDR3

[rspolyak]

We are migrating iMX6SL based board to iMX kernel 5.4. Just after u-boot starts the kernel, kernel stuck at early boot. By enabling early print logs, we have found that kernel fails in setup_arch() function in setup.c file.
This is the commit after which we are starting seeing this issue. Prior to mentioned commit, kernel boots fine.

commit 4d546d4a1e15addd03ab1d48a315abbb7d07f4e2
Author: Anson Huang <Anson.Huang@nxp.com>
Date:   Thu Apr 18 12:54:29 2019 +0800

    ARM: imx: add suspend/resume with FastMix OFF support
    
    This patch adds suspend/resume with FastMix OFF support.
    
    Signed-off-by: Anson Huang <Anson.Huang@nxp.com>

Above commit has many power management related changes so it is not clear what exactly could cause an error. That's why I would really appreciate any help from NXP community.

One more detail: our board is using DDR3 memory and we suspect that this can be an issue because there are some references in kernel code which make as think that iMX6SL default memory is assumed to be LPDDR.
For example, this commit .

[igorpadykov · Accepted solution]

Hi rspolyak

seems i.MX6SoloLite is not supported on 5.4 kernels as described on official nxp web page below

column "Supported Platforms" :

https://www.nxp.com/design/software/embedded-software/i-mx-software/embedded-linux-for-i-mx-applicat...

Best regards
igor

[rspolyak]

Thanks @igorpadykov for quick response.

Do you know when Sololite support is planning to be added?

[igorpadykov]

>Do you know when Sololite support is planning to be added?

https://www.nxp.com/products/product-information/product-longevity:PRDCT_LONGEVITY_HM?tid=vanproduct...

Best regards
igor

[rspolyak]

thanks, so based on this table Sololite will be supported until 2022.
What does this mean in terms of linux kernel support?

[igorpadykov]

>What does this mean in terms of linux kernel support?

you should start preparation for migration to more new processors beforehand.

Best regards
igor