About Table 9-11 Re-enabling the power in i.MX 7Dual Applications Processor Reference Manual

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About Table 9-11 Re-enabling the power in i.MX 7Dual Applications Processor Reference Manual

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goto11
Contributor III

Hello,

Step 7 has a description of DDR Remove the core reset.
I thought this control would control the DDRC_CORE_RST Field.
However, at the URL below, I found that there is a PATCH that controls DDRC_CORE_RST Field and DDRC_PRST Field.
Do I have to reflect the processing described in PATCH in the source code?

http://u-boot.10912.n7.nabble.com/PATCH-ARM-imx-ddr-Add-missing-PHY-reset-td414340.html

best regards
Goto

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joanxie
NXP TechSupport
NXP TechSupport

table 9-11 is for Power Removal, the patch is for Re-enabling the power, if you need to re-enable the power, you need to use the patch

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joanxie
NXP TechSupport
NXP TechSupport

where is step7? could you share with me?"I thought this control would control the DDRC_CORE_RST Field." what "this control" do you mean?

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goto11
Contributor III

This is the leftmost Step column in Table 9-11.
I thought that the following Description can be processed by setting DDRC_CORE_RST Field.

Excerpt from Step 7 Description
Remove the core reset core_ddrc_rstn = 1’b1
aresetn_n = 1’b1

best regards
Goto

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joanxie
NXP TechSupport
NXP TechSupport

table 9-11 is for Power Removal, the patch is for Re-enabling the power, if you need to re-enable the power, you need to use the patch

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