TMS320C6678: GEL DDR3 memory test fail

Daniel Cheng1

Genius 4330 points

Part Number: TMS320C6678

Hi Expert,

My customer use different DDR3 chip with C6678EVM and modify the evmc6678l.gel.

Change the settings on 3.3 Partial Automatic Leveling and 3.4 Basic Controller and DRAM Configuration.

But the DDR3 test is fail.

Could you provide the document how to debug or change DDR setting?

Thanks

Daniel

over 3 years ago

0 lding over 3 years ago

TI__Guru* 95265 points

Hi,

There are several docs can be found on TNSW20C6678 page:

https://www.ti.com/lit/an/sprabl2e/sprabl2e.pdf

https://www.ti.com/lit/an/spracl8/spracl8.pdf

https://www.ti.com/lit/an/sprabi1c/sprabi1c.pdf

Regards, Eric

0 Daniel Cheng1 over 3 years ago in reply to lding

Genius 4330 points

Hi Eric

Is there example code for DDR/Flash?

Thanks

Daniel

0 lding over 3 years ago in reply to Daniel Cheng1

TI__Guru* 95265 points

Daniel,

Please clarify what code you are looking for? We typically do DDR3 initialization with CCS GEL in no-boot mode. Or, we use IBL to initialize the DDR3 when we boot from a media.

Regards, Eric

0 Daniel Cheng1 over 3 years ago in reply to lding

Genius 4330 points

Hi Eric

Could you give me some documents for GEL and IBL?

Thanks

Daniel

0 lding over 3 years ago in reply to Daniel Cheng1

TI__Guru* 95265 points

Hi,

For IBL, http://software-dl.ti.com/processor-sdk-rtos/esd/docs/06_03_00_106/rtos/index_Foundational_Components.html#c66x.

For GEL, this is no document explaining it. Just like the GEL you modified from evmc6678l.gel for TI 6678EVM.

Regards, Eric

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TMS320C6678: GEL DDR3 memory test fail