AM6442: Whether AM6442 support use cypress MCP (Multi-chip package) OSPI flash boot?

Tao Han

Part Number: AM6442

Tool/software:

Hi Experts:

We are debugging customer board used S28HS02GT cypress 2G bits OSPI at AM6442 board.

We using SDK10.1 and through SPL boot AM6442, the bootmode is same at EVM board set as XSPI mode. (https://software-dl.ti.com/mcu-plus-sdk/esd/AM64X/10_01_00_32/exports/docs/api_guide_am64x/EVM_SETUP_PAGE.html#autotoc_md38 )

BOOTMODE [ 0 : 7 ] (SW2) = 1100 1110

BOOTMODE [ 8 : 15 ] (SW3) = 0100 0000

Just burn tiboot3.bin to AM6442 board but can not successful boot up. Below is the wave we compare with EVM board.

left side is customer board OSPI data0 line input, right side is EVM board is EVM board XSPI boot wave.

stage1/stage2/stage3 believe customer board is same as EVM board. but from stage 4 customer board do not load more tiboot3.bin image to SRAM.

the tiboot3.bin we has verified through DFU and it can enable LPDDR4 successful. customer AM64 use DFU can enter uboot mode.

sf read burned OSPI flash image, compare with EVM sf read 0x82000000 0 0x1000 the data is same. We believe u-boot burn to OSPI image is right.

Only different is EVM board is single die OSPI. customer used 2-die OSPI flash.

Could you please confirm whether AM64x support 2-Die OSPI flash?

Best Regards!

Han Tao

About OSPI boot FAQ we has compared with cypress engineer.

S28HS02GT is same as EVM board used S28H512 device. default mode is 1S-1S-1S and all OSPI command match our FAQ request.

Different is 2Gbits is 2-Die MCP package.

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1483336/faq-processor-sdk-am64x-macronix-ospi-nor-flash-integration-guide/5695950

e2e.ti.com/.../faq-tda4vm-is-there-a-guide-to-choosing-the-right-ospi-flash-parts-that-are-supported-on-jacinto-7

6 months ago

0 Tao Han 6 months ago

TI__Expert 6415 points

Hi Experts:

We has tried add debug at ti-u-boot-2024.04+git/arch/arm/mach-k3/am642_init.c add debug loop.

Those SPL at EVM board we insure R5 core will stop at line 187. but use DFU burn it to customer S28HS02GT OSPI flash.

use JTAG connect AM6442 PC stopped at internal 0x41xxxxxx address, it means that AM64x do not run to the SPL entry point. We think the problem is ROM support this MCP flash.

Please share your suggest about it.

Best Regards!

Han Tao

0 Vaibhav Kumar 6 months ago in reply to Tao Han

TI__Mastermind 44766 points

Hi,

Tao Han said:
use JTAG connect AM6442 PC stopped at internal 0x41xxxxxx address

This means it is stuck at ROM.

Has the customer read through this part from TRM section?

Since the flash size in bytes for the customer is 2Gb or 256 MB, so, in this case the following applies.

Does the following meet with the Flash part chosen?

Regards,

Vaibhav

0 Vaibhav Kumar 6 months ago

TI__Mastermind 44766 points

Tao Han said:
BOOTMODE [ 0 : 7 ] (SW2) = 1100 1110

BOOTMODE [ 8 : 15 ] (SW3) = 0100 0000

Can you also clarify if in the following: lets say SW2: 1100 1110 is it interpreted as bits 0 1 2 3 4 5 6 7 or as 7 6 5 4 3 2 1 0?

0 Tao Han 6 months ago in reply to Vaibhav Kumar

TI__Expert 6415 points

Vaibhav:

This is same as EVM board setting. You can find at below links.

software-dl.ti.com/.../EVM_SETUP_PAGE.html

Best Regards!

han tao

0 Vaibhav Kumar 6 months ago in reply to Tao Han

TI__Mastermind 44766 points

Hi Tao,

Thanks for mentioning.

I will check and respond when I have follow up updates to this thread.

Regards,

Vaibhav

+1 Tao Han 5 months ago in reply to Vaibhav Kumar

TI__Expert 6415 points

HI team:

Customer change to same OSPI flash as EVM board, now it can successful boot up.

Close this item believe 2Gb flash future have time need try it at EVM board again.

Best Regards!

Han Tao

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AM6442: Whether AM6442 support use cypress MCP (Multi-chip package) OSPI flash boot?