Physical memory address of DMFC

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Physical memory address of DMFC

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Kazuma_Sasaki
Senior Contributor I

From i.MX 6Solo/6DualLite Applications Processor Reference Manual, Rev. 4, 07/2018

 

38.4.8.1.1 FIFO allocation to channels
The physical memory is partitioned to 8 segments. For each channel the user has to
define the start address at a segment's boundary using the DMFC_ST_ADDR parameter

DMFC_ST_ADDR is defined below.

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I would like to know physical address of DMFC. How do I get it?

Is it defined as EBA0 and EBA1 in CPMEM?

Best Regards,

Kazuma Sasaki.

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igorpadykov
NXP Employee
NXP Employee

Hi Kazuma

DMFC is internal IPU fifo memory, it has not physical address.

IPU uses DMFC through segments, its parameters
DMFC_FIFO_SIZE, DMFC_ST_ADDR are described in
sect.37.4.8.1.1 FIFO allocation to channels i.MX6DQ Reference Manual
https://www.nxp.com/webapp/Download?colCode=IMX6DQRM 

>Is it defined as EBA0 and EBA1 in CPMEM?

no.

Best regards
igor
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igorpadykov
NXP Employee
NXP Employee

Hi Kazuma

DMFC is internal IPU fifo memory, it has not physical address.

IPU uses DMFC through segments, its parameters
DMFC_FIFO_SIZE, DMFC_ST_ADDR are described in
sect.37.4.8.1.1 FIFO allocation to channels i.MX6DQ Reference Manual
https://www.nxp.com/webapp/Download?colCode=IMX6DQRM 

>Is it defined as EBA0 and EBA1 in CPMEM?

no.

Best regards
igor
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

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Kazuma_Sasaki
Senior Contributor I

Hi igor,


I got it. I appreciate your support.

Best Regards,

Kazuma Sasaki.

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