Is OP-TEE supported on Luckfox Pico with Buildroot?

[mutantQ]

The SDK includes TEE components (media/security/rk_tee_user/) and references OP-TEE in U-Boot configs, but I cannot get a working boot with OP-TEE enabled on Luckfox Pico Pi W (eMMC).

Attempted:

• Enabling CONFIG_SPL_OPTEE, CONFIG_OPTEE_CLIENT, CONFIG_OPTEE_V2
• Using CONFIG_TRUST_INI="RV1106TOS.ini" and RV1106TOS_TB.ini
• Thunder Boot configs (result in boot failure - seems incompatible with Luckfox boards)

Questions:

1. Is OP-TEE officially supported on Luckfox Pico with Buildroot Linux?
2. If yes, what is the correct configuration? Is there a working BoardConfig example?
3. Does rv1106_spl_v1.02.bin support TEE, or only TB SPL variants?
4. Are the Thunder Boot (_TB) binaries compatible with Luckfox boards, or only EVB boards?

[ma3332]

I have the same question, I try to buildroot with TEE in Luckfox Mini B but still cannot finish