Linux/AM5728: Changing DDR clock frequency

Siva1

Part Number: AM5728

Tool/software: Linux

I would like to know if it is possible to change the ddr clock frequency on AM5728 GP EVM from linux. This is purely for testing purposes.

Thanks,

Sivaram

0 Biser Gatchev-XID over 7 years ago

Do you mean changing it at runtime, or booting with a different DDR clock?

0 Siva1 over 7 years ago in reply to Biser Gatchev-XID

Not in run time, we need to test DDR at different clock frequencies.

0 JJD over 7 years ago in reply to Siva1

When changing DDR speeds, be sure to consider other DDR configuration changes, which will be identified using the EMIF tool

www.ti.com/.../sprac36b.pdf

Examples on changing the DDR PLL can be found here
processors.wiki.ti.com/.../AM570x_Speed_Grades

Regards,
James

Processors forum