Problem switching from i.MX6S to i.MX6DL

[steffendoster]

Hi,

I have a problem switching my board from i.MX6S to i.MX6DL.

I thought those processors should be the same except for the additional core on i.MX6DL. But there seem to be an important difference which I haven't found yet.

We took one of our Solo boards and replaced the processor with a DualLite in hope it will run out of the box with the old Solo-BSP (except for the additional core). As far as I can see, we haven't changed any additional hardware.

Well, it ran for a short time. But after some Seconds our LVDS-Display starts blinking. And after about 3 to 5 Minutes the device crashes completely and runs into a reboot.

We are running U-Boot, Mainline Linux 4.9 and Debian 9. It crashes not only in linux but also in U-Boot with the same symptoms

Is there something that has to be changed between the processors?

Do you need additional Informations?

[Yuri]

Hello,

  AN4397  (Common Hardware Design for i.MX 6Dual/6Quad and i.MX 6Solo/6DualLite)
describes differences between devices of i.MX6 series.

  In particular, i.MX6S does not support 64-bit memory.

http://cache.nxp.com/files/32bit/doc/app_note/AN4397.pdf

  IMX6DL may require more careful power and decouple considerations.
Please use recommendations of Hardware Development Guide for i.MX6.

http://cache.nxp.com/assets/documents/data/en/user-guides/IMX6DQ6SDLHDG.pdf 

Have a great day,
Yuri

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[steffendoster]

Well, our Hardware-Department already checked the attached documents and said that the decoupling even meet the requirements for a Quad.