(Q2) Required queries about IMX6 ultra lite processor and its Errata. Need help for clarification

[ramesh6663]

PMIC STBY_REQ Quires:
We used the PMIC 3001 (MC32PF3001A7EP) for our design. Since PMIC does not have PMIC_STBY_REQ dedicated pin. So, we have connected the Processor PMIC_STBY_REQ pin through MOSFET to make XTALI (T16) low.

Please see below snap shot from our schematic design.

1. Is this circuit really required only to make processor to be stand by mode?

2. How to make PMIC PF3001 in standby mode ? If there is any solution please provide us.

Thanks in advance

Thanks & Regards,

Rameshkumar

[igorpadykov]

Hi Ramesh

>1. Is this circuit really required only to make processor to be stand by mode?

No. It is optional circuit.

>2. How to make PMIC PF3001 in standby mode ? If there is any solution please provide us.Thanks in advance

Since there is no STANDBY pin in PMIC 3001, seems only way is to change voltages through I2C.
Please refer to below example:
http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/commit/drivers/regulator/pfuze100-regula...

Best regards
igor
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