AM620-Q1: TI can support this GigaDevice QSPI NAND on AM620-Q1?

Which of the following read commands did you meant to send?

Dear Kumar.

I think it is 0x13.

BTW, I sent the parse tool by email w/ TIDRIVER link, it can parse serial-nand-1.8V.sal and show the wave like above.

thanks a lot!

yong

Hi,

I will check with the values which you have put forward. Will also confirm with the ROM team if required to get more inputs.

I would also request to have all our conversation here rather over email to maintain consistency on our discussion.

Thanks for your patience.

Regards,

Vaibhav

Dear Vaibhav.

sure, we can get your support over E2E.

I really want to ask your great support to highlight the request from customer and give quick response if go or not to go. then customer can move on.

so may I ask if we can get response before 4/1/2025 IST?

Thanks a lot!

yong

Dear Vaibhav.

soft reminder. 

may I ask for the feedback?

thanks a lot!

yong

Hi Yong,

31/03/2025 was a holiday here in TI Bangalore, India.

I am actively looking at this query now.

Regards,

Vaibhav

Hi,

Can you let me know the value of the following two fields?

Regards,

Vaibhav

Hello Yong,

Any update on my question?

I would need the values for bootmode pins 7 and 8 respectively.

This way I can isolate which of the following is referenced.

Looking forward to your response.

Regards,

Vaibhav

Dear Vaibhav.

Yes, bit 7 and 8 are all 1.

thanks a lot!

yong

Hi Yong,

Thanks for your patience.

I appreciate you putting out this information.

This means that you want the flash to start in 1S-1S-1S mode hence the following will be effective:

On this note, for page reads 13h will be sent before the read command 0x0Bh is issued.

Can you please check with the flash vendor about the following question?

Q: Is the flash part GD5F1GQ5REY2GR set as BUF=1 or BUF=0? 

More context, so ROM is set to work for BUF=1.

BUF=1 is the Buffer Read Mode.

BUF=0 is the Continuous Read Mode.

Looking forward to your response.

Regards,

Vaibhav

Dear Vaibhav.

please check below response from flash vendor:

Q: Is the flash part GD5F1GQ5REY2GR set as BUF=1 or BUF=0? 

• GD5F1GQ5REY2GR only supports buffer read mode but not continuous read mode, hence BUF=1.

thanks a lot!

yong

Hi Yong,

Thanks for your response.

Yong Zhang said:

GD5F1GQ5REY2GR only supports buffer read mode but not continuous read mode, hence BUF=1.

This is ideal.

So to summarize, you see that the flow is stuck at ROM and is not past ROM right?

If that is the case, could you tell me if the following has been taken into consideration or not?

If it is a YES, then I would redirect this thread to an expert who can review your schematics

Looking forward to your response.

Regards,

Vaibhav

Dear Vaibhav.

1. customer used SK-AM62-LP for the verification test, they remove W35N01JWTBAG and mount GD5F1GQ5REY2GR.

2. HW connection like below as GD5F1GQ5REY2GR has only 4 data lines, D0~D3.

CS# -> OSPI0_CSn0

SO/SIO1     ->   OSPI0_D1

WP#/SIO2   ->  OSPI0_D2

VSS             -> Ground.

VCC            -> 1.8V

HOLD#/SIO3  -> OSPI0_D3

SCLK           ->   OSPI0_CLK

SI/SIO0        ->  OSPI0_D0

3. they reports that the problem is that, "at boot stage, the first command sent by AM6254 to read NAND parameter from address 01. But GigaDevice QSPI NAND need read from address 04". they have asked GigaDevice to upgrade its NAND flash to address 01. then boot up is ok.

Please let us know if the request is clear.

thanks a lot!

yong