OSPI Flash Initialization Failure on TE0955-01

[blee]

Hi,
I am experiencing an issue with initializing the OSPI Flash on our Versal-based board
(using the Trenz board TE0955-01 & downloaded file : TE0955-te0955-rd-vivado_2024.2-build_1_20250707150046.zip)

1. Hardware Environment:
   SoC: AMD Versal
   Flash Memory: ISSI 256Mb Octal flash (single die) & ISSI 1Gb Octal Flash (256Mb x 4-die stacked)
   Software: U-Boot / Linux

2. Problem Description:
256Mbit has no issue.
but When executing sf probe in U-Boot with 1Gb Octal Flash, the initialization fails with the following log:
Versal> sf probe 0 0 0
Failed RX dll tuning
DDR tuning failed with error -22
Failed to initialize SPI flash at 0:0 (error 0)

All features of 256M/1G are same except Single Die or Stack Die.
Of course, I added device information correctly into "spi-nor-ids.c or issi.c" also

I am looking forward to your technical guidance on resolving this issue.

Thanks.

[mch]

Hi,

Could you please let me know which carrier board you are using? I tested a new TE0955 module using your tested reference design. It worked perfectly. You can see the results here:

Versal> sf probe 0 0 0
SF: Detected mt35xu02g with page size 256 Bytes, erase size 128 KiB, total 256 MiB

Best regards,
Mohsen Chamanbaz

[mch]

Hi,

I noticed that you are using an ISSI OSPI memory chip, even though our TE0955 module uses a Micron OSPI memory chip. We have never tested the ISSI OSPI memory chip in our design. Did you solder the OSPI chip onto the module yourself?

Best regards,
Mohsen Chamanbaz

[blee]

Hi,
I mounted the socket and changed the device to ISSI.
The carrier board name is "AMB0010-01"

I added the Device information at "spi-nor-ids.c" 
        { INFO("is25wx256",  0x9d5b19, 0, 128 * 1024, 256,
                        SECT_4K | USE_FSR | SPI_NOR_OCTAL_READ | SPI_NOR_4B_OPCODES |
                        SPI_NOR_HAS_TB | SPI_NOR_OCTAL_DTR_READ | SPI_NOR_OCTAL_DTR_PP) },
        { INFO("is25wx01g",  0x9d5b1b, 0, 128 * 1024, 1024,
                        SECT_4K | USE_FSR | SPI_NOR_OCTAL_READ | SPI_NOR_4B_OPCODES |
                        SPI_NOR_HAS_TB | SPI_NOR_OCTAL_DTR_READ | SPI_NOR_OCTAL_DTR_PP) },

Thanks

[M Kirberg]

Hi,

sorry we cannot really help here.

This can be everything from bad soldering to driver and devicetree settings.

br