imxrt1062 u-boot not running issue

[thomasyoun]

Hi~ all.

First of all, I'm a hardware engineer.

I am currently using IMXRT1062CVJ5A(New Board).

I uploaded a U-boot image to IS25WP128(NOR Flash) using FlexSPI(QSPI),

But IS2s16160(SDRAM) does not work and Flash does not work...

(Waveform measurement with : oscilloscope : Clock, CE, etc....)

By the way, the system clock of MCU(Imxrt1062) is normal operating at 24MHz...(used oscilloscop)...

Flash IC seems to be a problem, I remove the Falsh chip with the U-boot and soldered it to 1060EVB.

=> Normal operaion !!

In a New borad(IMXRT1062CVJ5A), voltage level and clock are all normal.

What more should I debug?

(The difference from the 1060 EVB reference circuit is that the part of the free link is removed.)

Thank you..

[thomasyoun]

Resolved. When set to Auto Boot, it worked normally. Thank you~ jayheng‌

[thomasyoun]

Regarding the boot issue,

I would like to verify the following in the reference manual: What should I do?

[jay_heng]

You can try this tool GitHub - JayHeng/NXP-MCUBootUtility: A one-stop boot utility tool based on Python2.7+wxPython4.0, it... 

[thomasyoun]

Hi~ jayheng,

Thank you for your reply.

All other SW pins were set to Low and only Boot Mode was changed to QSPI Flash(Only SW7-3 : High).
As a result of SCK measurement in flash memory with oscilloscope, the waveform appears briefly and then remains low.
For old boards, the SCK waveform is still visible.

Thank you!

[jay_heng]

I guess it is SDRAM initialization issue, the SDRAM chip is MT48LC16M16A2 on NXP RT1060-EVK, but you use IS2s16160, the DCD configuration should be different, so after ROM configured your IS2s16160 (not properly configured), it tried to copy application data from Flash to SDRAM, but failed, that's why the waveform appears briefly and then remains low on your board. please check DCD and better to do unit test for the SDRAM.

[jay_heng]

Hi Thomas Youn,

  How about BT_MODE and BOOT_CFG pin setting on your new board?

Best Regards,

Jay