Hi
I am designing a system with i.MX6 Solo processor with MMPF0200.
My system needs the Processor to turn ON automatically when the power is applied ( No Button press).
In below community, if we need to turn ON automatically, we should control the POR_B.
https://community.freescale.com/message/358993#358993
So, I thought the attached circuit.
Is it correct?
If the circuit is correct, what is the recommend connections of PMIC_ON_REQ ?
Please clarify,
Sincerely
Solved! Go to Solution.
Hi ko-hey
I think it is correct, also would recommend to connect
PMIC RESETBMCU to processor POR as done in Sabre SD
schematic. PMIC_ON_REQ may be left unconnected.
Best regards
igor
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Hello Shichin Huang,
Did you find by any chance a way to get rid of the "power on" button?
We're facing the same issue and we'd appreciate if you could share a solution to that.
Regards,
Ludovic
Hi Ludovic,
I use a reset IC to simulate the behavior of power button.
Sincerely,
Shichin
Ok, that's exactly what we were planning to do too as a last resort.
It's such a shame for an embedded device to require an action from a human in order to power-up.
Hi ko-hey
I think it is correct, also would recommend to connect
PMIC RESETBMCU to processor POR as done in Sabre SD
schematic. PMIC_ON_REQ may be left unconnected.
Best regards
igor
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Note: If this post answers your question, please click the Correct Answer button. Thank you!
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Hi igor,
But if disconnect PMIC_ON_REQ signal from i.MX6 to PMIC,
you cannot power off PMIC power when you normally shut down from OS.(ex: press power off icon of Linux.)
Do you have any idea about auto power on and also support PMIC off when system normally shut down from Linux?
Thanks!
Regards,
Shichin
Igor
Thanks!
I understood.
ko-hey