EDMA destination address for AM335x

Hiroyasu Tazawa1

Hi, Everyone

I have a question about EDMA of AM335x.

My customer want to transfer to internal SRAM area.

but It can not transfer when destination address is 0x402F0400-0x402FFFFF.
It is success to transfer when destination address is 0x40300000-0x4030FFFF.

I saw Memory map of TRM
TRM says 0x402F0400-0x402FFFFF is SRAM internal and 0x40300000-0x4030FFFF is L3 OCMC0.

Destination address is limited ?
Is it described in TRM or data sheet ?

Best Regards
Hiroyasu

over 8 years ago

0 Biser Gatchev-XID over 8 years ago

TI__Guru**** 393215 points

Hi,

The Internal SRAM can be configured as ARM cache. Please check whether this is the case.

0 Hiroyasu Tazawa1 over 8 years ago in reply to Biser Gatchev-XID

Guru 12350 points

Hi, Biser

Thank you for your reply !
Did you tell me EDMA can not access internal SRAM if this area is configured as ARM cache ?
If not use as cache, Can EDMA access this area ?

Best Regards
Hiroyasu

0 Biser Gatchev-XID over 8 years ago in reply to Hiroyasu Tazawa1

TI__Guru**** 393215 points

Actually it's unaccessible. See e2e.ti.com/.../1057707

0 Hiroyasu Tazawa1 over 8 years ago in reply to Biser Gatchev-XID

Guru 12350 points

Hi, Biser

Thank you !
I got it.

Best Regards
Hiroyasu

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EDMA destination address for AM335x