J784S4XEVM: Get/Define OSPI memory frequency during boot

Bruce Rosier

Prodigy 30 points

Part Number: J784S4XEVM

Tool/software:

Hello all,

How can I obtain/define the OSPI memory frequency at startup ? (just before Linux) ?

Thank you in advance!

Bruce R

7 days ago

0 Doredla Sudheer Kumar 6 days ago

TI__Mastermind 41640 points

Hi,

Which boot flow your are using SBL or SPL?

Best Regards,
Sudheer

0 Bruce Rosier 6 days ago in reply to Doredla Sudheer Kumar

Prodigy 30 points

Hi,

I am using the SPL boot flow.

Regards,

Bruce

0 Tanmay Patil 5 days ago in reply to Bruce Rosier

TI__Mastermind 30260 points

Hi Bruce,

What do you want to keep the frequency as? We have only test controller frequency of 25MHz in DDR mode without phy tuning. With phy tuning, upto 166MHz is characterized.

You can change this in device-tree files for ospi controller and the flash part node.

Regards,
Tanmay

0 Bruce Rosier 3 days ago in reply to Tanmay Patil

Prodigy 30 points

Hi,

I'd like to set the OSPI frequency to 50 MHz. Is this possible?

Regards,

Bruce

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J784S4XEVM: Get/Define OSPI memory frequency during boot