How to Initialize PMIC for QorIQ LS1043A

[pro-supportengi]

• How do customer’s initialize/program the PMIC for their
  custom board? 
• Where are the details for programming the PMIC for the very first time documented?
• The PMIC after FAB is empty is this correct? 
• Are there jumpers on the reference design, or how is the
  PMIC programmed for the very first time? 
• Also, does NXP provide 1043ARDB PMIC program files for the reference
  design?
• Lastly, where is the PMIC Linux driver, or the name of the driver, for the
  LS1043ARDB reference board SDK 0.5v and any documentation for the driver?

[alexander_yakov]

I assume you are talking about PMIC "34VR500", this PMIC is used on our LS1043ARDB board.

The device is not empty - it is factory pre-programmed and available in several voltage configurations (34VR500V1, 34VR500V2, 34VR500V3, 34VR500V4, 34VR500V5). On our LS1043ARDB board we use 34VR500V4.

Please look device datasheet, Table 8 "Startup Configuration" for the list of values of pre-programmed voltages.

The device starts with default configuration, and may be further controlled via I2C port in case if necessary.

As far as I can see from the board schematic, the device output voltages are the same as factory default for 34VR500V4, so - no changes are necessary.

Link to 34VR500 device datasheet:

http://cache.nxp.com/files/analog/doc/data_sheet/MC34VR500.pdf?fpsp=1&WT_TYPE=Data%20Sheets&WT_VENDO...

Have a great day,
Alexander

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[pro-supportengi]

Hi Alexander,

How does a customer program the PMIC, is it through a PMIC driver or firmware and where can I find the code specifically for the LS1043ARDB PMIC?

Thx,

Tracy

[aliismail]

Tracy,

Did you ever find out how to configure the PMIC with a driver?