TDA4VM: How to use 4-byte address mode on QSPI.

Reuben

Part Number: TDA4VM

Hello,

I modified SBL to read binaries from the MT25QU512ABB flash through QSPI.

It can read sysfw.bin(0x40000), app(0xA0000), atf_optee.appimage(0xe0000) and tikernelimage_linux.appimage(0x6c0000) but can't read tidtb_linux.appimage(0x16c0000) and lateapp(0x1700000).

I'm assuming it can access upto 16MB because of "3-byte address mode". (2^24 = 16MB).

I found out OSPI_open_v0() in OSPI_v0.c sets "4-bytes address mode" when dtrEnable is "true".

However, Board_flashOpen() function has failed because it was not read ID through QSPI when when I set dtrEnable "true".

I'm working with the SDK6.2 and the J721EX evm.

Please let me know how to use "4-byte address mode".

Regards,

Reuben.

over 5 years ago

0 Karan Saxena over 5 years ago

TI__Guru* 77854 points

Hi Reuben,

Is this in context with MCUSW boot app?

Regards,

Karan

0 Reuben over 5 years ago in reply to Karan Saxena

Intellectual 471 points

Hi Karan,

I'm working with boot_app_mcu_rtos in MCUSW.

However, my problem occurs on SBL(tiboot3.bin) before boot_app_mcu_rtos runs.

There is ospi_quad_test.c in pdk.

(psdk_rtos_auto_j7_06_02_00_21/pdk/packages/ti/board/diag/norflash/src/ospi_quad_test.c)

This file has a function to open the nor flash driver for MT25QU512ABB.

I referred to how this function sets configurations.

Do you have another demo for MT25QU512ABB with 4-byte address mode?

Regards

Reuben.

0 Karan Saxena over 5 years ago in reply to Reuben

TI__Guru* 77854 points

Hi Reuben,

I don't think we have any RTOS demo with that configuration. I can check with the driver owner on this.

Regards,

Karan

0 Karan Saxena over 5 years ago in reply to Karan Saxena

TI__Guru* 77854 points

Hi Reuben,

Apologies for a late response. I checked with the driver owner - The driver should be able to support both 3-byte or 4-byte address mode.

So can you please help reproduce the problem so that I can check with the driver owner and come with a fix?

Regards,

Karan

0 Reuben over 5 years ago in reply to Karan Saxena

Intellectual 471 points

Hi Karan,

Thank you for your replay.

I will try something more if the driver owner said that.

I'll close this thread.

Regards,

Reuben

0 Karan Saxena over 5 years ago in reply to Reuben

TI__Guru* 77854 points

Hi Reuben,

Please let me know if the issue persists and I can try reproducing the issue locally and help.

Regards,

Karan

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TDA4VM: How to use 4-byte address mode on QSPI.