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PMIC TWL6032 shutdown

nirmal kumar3
Prodigy 215 points
Other Parts Discussed in Thread: TWL6032

Hi All,


Our project requires integrating OMAP4460 with PMIC TWL6032 .

Problem :

Writing at u-boot to the following register.

Slave address :0x48h Register address:0x25 Value :0x1.  reboots the system

Expected result:

PMIC has to shutdown

Actual Result:

System reboots.

Could anyone help in resolving this issue ,since this command works on the reference board.

  • 0
    TI__Expert 6090 points

    Nirmal, this bit is to reset the PMIC so the behavior you seeing is correct. Please refer to the register map of the device to for the description of the device.

     

     

  • 0 in reply to Puneet Sehgal
    Prodigy 215 points

    puneet,

    I am  indeed referring to the register map( SWCU095B – November 2011 – Revised August 2012) for configuring the device .

    And this is what i found under PHOENIX_DEV_ON Register :

    Writing 1 starts an ACT2OFF or SLP2OFF transition. This bit is cleared
    automatically.

    The silicon revision i read from PMIC(TWL6032) matches with the document i have.

    Does it have anything to do with EEPROM of your chip or is there an updated document?

    Thanks,
    Nirmal