IMX8MM PMIC_ON_REQ

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IMX8MM PMIC_ON_REQ

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santhosh2
Contributor IV

Is there any way to toggle the  PMIC_ON_REQ using software in IMX8MM

 

Regards

Santhosh

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1,179 Views
Yuri
NXP Employee
NXP Employee

@santhosh2 
Hello,

  
  The PMIC_ON_REQ signal can be controlled by the LPCR[TOP] and
LPCR[DP_EN] bits, say, when the 'poweroff' command is issued in Linux.

   For power on only ONOFF pin can be used.

Regards,
Yuri.

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1,174 Views
santhosh2
Contributor IV

Hello Yuri,

I have tried this method, But the PMIC_ON_REQ pin toggles only when the switch is pressed as mentioned in the data sheet.

PMIC_ON_REQ.png

Since I want to Control this PMIC_ON_REQ via software to reset the entire PMIC without using the switch, Is there any other way?

Regards

Santhosh

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1,164 Views
Yuri
NXP Employee
NXP Employee

@santhosh2 

  Also, LPCR[DP_EN]  should be set.

 

~Yuri.

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1,155 Views
santhosh2
Contributor IV

hello yuri,

I tried it is not working for me, Any other things needs to be done

Regards

santhosh

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1,141 Views
Yuri
NXP Employee
NXP Employee

@santhosh2 
Hello,

   is Linux command "poweroff" working on Your board?

Regards,
Yuri.

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1,128 Views
santhosh2
Contributor IV

Power off command is available, but when poweroff command fired, the system power's off but reboot doesn't happen, Please advice any next step to try?

 

poweroff1.pngpoweroff2.png

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1,119 Views
Yuri
NXP Employee
NXP Employee

@santhosh2 
Hello,

   let me know how LPCR[TOP] , LPCR[DP_EN] are written in Your tests.

Regards,
Yuri.

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