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DRA821U: Custom board cannot boot from OSPI even we can write/read back OSPI memory

Part Number: DRA821U
Other Parts Discussed in Thread: DRA821

Tool/software:

Hi there,

Our custom DRA821 board cannot boot from OSPI memory but can boot from DFU and eMMC. In U-Boot, we can verify U-Boot files are correctly written into OSPI memory as shown below. We use the same boot mode configuration as listed in DRA821 EVM manual www.ti.com/.../spruiw7a.pdf.

Do you have any suggestions on how to identify the root cause and solve this problem?

Thanks,

Charles

=> md 0x80000000 100
80000000: 00000000 00000000 10000000 00000000  ................
80000010: 00000000 00000000 01000000 00000000  ................
80000020: 00000000 00000000 00000000 10000000  ................
80000030: 00000000 00000000 00000000 00000000  ................
80000040: 00000000 00000000 00040000 00000000  ................
80000050: 00000000 00010000 00000000 00000000  ................
80000060: 00000000 00100000 00000000 00000000  ................
80000070: 00000000 00000000 00000000 00000000  ................
80000080: 00000000 00000000 00000000 00000000  ................
80000090: 00004000 00000000 00000000 00000000  .@..............
800000a0: 00000000 00001000 00000000 00000000  ................
800000b0: 00000000 00000000 00000000 00000000  ................
800000c0: 00000000 00000000 00000000 00000000  ................
800000d0: 00000000 00000000 00000000 00000000  ................
800000e0: 00000000 00000000 00000000 00000000  ................
800000f0: 00000000 00000000 00000000 00000000  ................
 
=> sf probe
k3-navss-ringacc ringacc@2b800000: Ring Accelerator probed rings:286, gp-rings[96,32] sci-dev-id:235
k3-navss-ringacc ringacc@2b800000: dma-ring-reset-quirk: disabled
jedec_spi_nor flash@0: non-uniform erase sector maps are not supported yet.
SF: Detected s28hs512t with page size 256 Bytes, erase size 256 KiB, total 64 MiB
=> sf read 0x80000000 0 100
device 0 offset 0x0, size 0x100
SF: 256 bytes @ 0x0 Read: OK
 
 
=> md 0x80000000 100
80000000: ef048230 58048230 010203a0 5f140202  0...0..X......._
80000010: 86c73b9e e34f4fca 63a4be02 d2442307  .;...OO....c.#D.
80000020: 3006e956 2a09060d f7864886 0d01010d  V..0...*.H......
80000030: 81300005 300b319d 55030609 02130604  ..0..1.0...U....
80000040: 0b315355 03060930 0c080455 31585402  US1.0...U....TX1
80000050: 060d300f 07045503 6144060c 73616c6c  .0...U....Dallas
80000060: 25302731 04550306 541e0c0a 73617865  1'0%..U....Texas
80000070: 736e4920 6d757274 73746e65 636e4920   Instruments Inc
80000080: 6f70726f 65746172 30133164 55030611  orporated1.0...U
80000090: 0a0c0b04 636f7250 6f737365 13317372  ....Processors1.
800000a0: 03061130 0c030455 2049540a 70707553  0...U....TI Supp
800000b0: 3174726f 061b301d 48862a09 010df786  ort1.0...*.H....
800000c0: 0e160109 70707573 4074726f 632e6974  ....support@ti.c
800000d0: 1e306d6f 35320d17 30313230 38303931  om0...2502101908
800000e0: 175a3831 3035320d 31323133 31383039  18Z..25031219081
800000f0: 81305a38 300b319d 55030609 02130604  8Z0..1.0...U....