U-Boot SPL 2023.04-g8366064208 (May 20 2024 - 02:37:44 +0000)
SYSFW ABI: 3.1 (firmware rev 0x0009 '9.2.8--v09.02.08 (Kool Koala)')
SPL initial stack usage: 13408 bytes

Method of test:

Download and write image VIA etcher to a SD card and attempt boot.

Note using the same method to write the Debian or Yocto  image from TI boots as normal. 

For reference, messages from TI Debian boot:

U-Boot SPL 2023.04 (May 27 2024 - 20:11:30 +0000)
SYSFW ABI: 3.1 (firmware rev 0x0009 '9.2.8--v09.02.08 (Kool Koala)')
SPL initial stack usage: 13392 bytes
Trying to boot from MMC2
Authentication passed
Authentication passed
Authentication passed
Authentication passed
Authentication passed
Starting ATF on ARM64 core...

NOTICE:  BL31: v2.10.0(release):v2.10.0-367-g00f1ec6b8
NOTICE:  BL31: Built : 20:11:18, May 27 2024
I/TC:
I/TC: OP-TEE version: 4.1.0-51-g012cdca49 (gcc version 13.2.1 20231009 (Arm GNU Toolchain 13.2.rel1 (Build arm-13.7))) #1 Mon May 27 20:11:23 UTC 2024 aarch64
I/TC: WARNING: This OP-TEE configuration might be insecure!
I/TC: WARNING: Please check https://optee.readthedocs.io/en/latest/architecture/porting_guidelines.html
I/TC: Primary CPU initializing
I/TC: GIC redistributor base address not provided
I/TC: Assuming default GIC group status and modifier
I/TC: SYSFW ABI: 3.1 (firmware rev 0x0009 '9.2.8--v09.02.08 (Kool Koala)')
I/TC: HUK Initialized
I/TC: Activated SA2UL device
I/TC: Enabled firewalls for SA2UL TRNG device
I/TC: SA2UL TRNG initialized
I/TC: SA2UL Drivers initialized
I/TC: Primary CPU switching to normal world boot

same SD card, same hw / same switch settings on HW, ....