Flash emmc on imx8mn with lpddr4

[bryan_hong]

hi

First, I have set SW1101 to `1000`

then, I execute below.

uuu -b emmc_all imx-boot-imx8mnevk-sd.bin-flash_evk imx-image-multimedia-imx8mnevk.tar.zst
uuu (Universal Update Utility) for nxp imx chips -- libuuu_1.5.21-0-g1f42172

Success 0 Failure 1


5:12 1/ 1 [HID(W):LIBUSB_ERROR_TIMEOUT ] SDPS: boot -scanterm -f imx-boot-imx8mnevk-sd.bin-flash_evk -scanlimited 0x800000

and serial port show below

U-Boot SPL 2023.04-lf_v2023.04+gaf7d004eaf (Jun 06 2023 - 14:59:40 +0000)
read error from device: 94f630 register: x!DDRINFO: start DRAM init
DDRINFO: DRAM rate 3200MTS
Training FAILED

plz comment for this.

thanks

Bryan

[bryan_hong]

I have attached evk board I using

[Zhiming_Liu]

Your steps are correct, which system you are using?

[bryan_hong]

it's android!!!

[Zhiming_Liu]

I mean Linux PC or Windows PC

[bryan_hong]

I can use both all .

[Zhiming_Liu]

I can flash with same steps.

There is two reasons about this error:

1. Your USB cable issue

2. EVK hardware issue.

[bryan_hong]

I have 2or3 ea boards and will test them.
get back soon

[bryan_hong]

I have 2ea evk 8m nano,

All did not work flashing emmc.

What should I do?

[Zhiming_Liu · Accepted solution]

You can try other board, like 8mp, 8mm.

[Zhiming_Liu]

Hi @bryan_hong 

Please share the board photo.

Best Regards

Zhiming