Hi Daniel,
Can you help us elaborate on your boot sequence? How are you booting your different cores?
Ans:These parts followed AN13750 as below

The message that you are showing, is it with SD boot? Or with QSPI boot?
Ans: It's QSPI boot. (0x0 flashing ivt_blob.bin, 0x100000 flashing fip.bin, 0x200000 flash m7_0_app)
I only modify u-boot and atf as my first topic but not sure how can I enable HSE with multiplecore boot environment correctly.
Thansk.
Allen