i.MX ProcessorsのトピックRe: IMX8QM Board resetting while flashing

IMX8QM Board resetting while flashing

vinothkumars — Thu, 08 Apr 2021 14:58:47 GMT

Dear NXP,

I got reset issue while flashing. I don't know what is the issue. Will you please give some points

resetting ...
Board: iMX8QM MEK
Boot: USB
DRAM:
SCSI: Net: Fastboot: Normal

PS L:\25-03-T2> .\uuu.exe -b emmc .\u-boot-imx8qm-mek-uuu.imx
uuu (Universal Update Utility) for nxp imx chips -- libuuu_1.4.107-0-g9201dde

Success 0 Failure 0

PS L:\25-03-T2> ================100%=================] SDPS: boot -f .\u-boot-imx8qm-mek-uuu.imx

While flashing board hanged here.

Re: IMX8QM Board resetting while flashing

igorpadykov — Sat, 10 Apr 2021 00:44:33 GMT

Hi Vinothkumar

seems this issue is related to

https://community.nxp.com/t5/i-MX-Processors/DDR-Stress-Test-failed-for-IMX8QM-Custom-Board/m-p/1259324#M172312

Best regards
igor

Re: IMX8QM Board resetting while flashing

vinothkumars — Sat, 10 Apr 2021 14:01:44 GMT

Thank you @igorpadykov for the reply.

I able to do DDR stress in one of the custom board.

I done the following for DDR initialization in IMX8QM board,

Copy the .cfg content to scfw board directory
Build and copy the scfw binary to uboot firmware
Build bootloader.

Please find the complete log. I got the u-boot panic,

Board: iMX8QM MEK .........................START
Boot: USB
announce_dram_init DRAM:
show_dram_config
++ RAM Configuration .......

DRAM:
imx8_iomux_setup_multiple_pads ..............
imx8_iomux_setup_pad ..................
imx8_iomux_setup_pad ..................
imx8_iomux_setup_pad ..................
imx8_iomux_setup_multiple_pads ..............
imx8_iomux_setup_pad ..................
imx8_iomux_setup_pad ..................
SCSI: Net: Fastboot: Normal................END

do_sync ..........
panic -------Resetting CPU ...

panic_finish ..............
++++++++++++++++++++++++ resetting ...

Will you please give me some ideas why u-boot panic is happening ?

Re: IMX8QM Board resetting while flashing

igorpadykov — Mon, 12 Apr 2021 00:51:05 GMT

just for test one can try to build without OPTee as described in sect.5.6.10 OP-TEE enablement

i.MX Yocto Project User’s Guide

Best regards
igor

Re: IMX8QM Board resetting while flashing

vinothkumars — Mon, 12 Apr 2021 08:56:51 GMT

Thank you @igorpadykov for the reply.

This is the USB C issue. I disable in config after that it's flashing.