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First time power on sequence of i.MX7D-SABRE

Question asked by Takayuki Ishii on Sep 14, 2018
Latest reply on Sep 18, 2018 by Takayuki Ishii

Hello community,

 

In i.MX7D-SABRE, if 5VDC in and SW1 on, board will start up immediately.

We hope to keep OFF mode after SW1 on  and start boot up by pushed ONOFF button.

 

In Table 6-8. Power mode transitions of i.MX7 reference manual (IMX7DRM rev1),

It say that  "2. When button is pressed, 'state' goes ON,PMIC_ON_REQ goes '1'."

 

Does we can control by ONOFF button of first time power on sequence?

I already removed both R280 and R307 registers connect to PWRON pin of PMIC.

 

Best regards,

Ishii.

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