TDA4VM: Program is not started after power up process

Hibino Tsutomu

Part Number: TDA4VM

Hello team

　We make a custom board based on J721EX SDK board. After power up sequence(Figure 5-3. Power-Up Sequencing refer to tda4vm document) our software is not launch up.

But injection of Reset signal(MCU_ Resetz) , software is start to launch. It is different to SDK board. What causes do you think?

Many thanks,

Tsutomu Hibino

over 3 years ago

0 Karan Saxena over 3 years ago

TI__Guru* 78125 points

Tsutomu Hibino

What boot flow are you using? Are you using SBL or SPL/u-boot?

Regards

Karan

0 Hibino Tsutomu over 3 years ago in reply to Karan Saxena

Prodigy 100 points

We are using SPL/u-boot.

I found that closed issue in this site which certain boards are happen in our development bench.

That means we have seen it which is closed phenomenon.

As a conclusion of this case, is the issue LPDDR layout(hardware)?

LPDDR frequency setting at 4266MTS, is sometime failed, but the setting frequency 3733MTS is fine.

e2e.ti.com/.../tda4vm-spl-failed-to-boot-from-all-boot-devices

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U-Boot SPL 2021.01-g53e79d0e89 (Sep 02 2021 - 18:20:00 +0000)
Model: Texas Instruments K3 J721E SoC
Board: J721EX-PM2-SOM rev E7
SYSFW ABI: 3.1 (firmware rev 0x0015 '21.5.0--v2021.05 (Terrific Llam')
Trying to boot from MMC2
spl_load_image_fat: error reading image tispl.bin, err - -6
spl_load_image_ext: ext4fs mount err - 0
SPL: failed to boot from all boot devices
### ERROR ### Please RESET the board ###