topic Re: PF3001 regulators in i.MX Processors

PF3001 regulators

riteshpatel — Fri, 25 Mar 2016 13:43:01 GMT

Hi,

I am using PF3001 PMIC in my design to power iMX6UL processor.

PF3001 is available with pre-programmed OTP configuration to support iMX6UL. Programming option is 7 (i.MX 6UL with DDR3L) and part # is MC32PF3001A7EP. As PF3001 Datasheet page # 3.

As per power startup sequence shown for programming option A7 on PF3001 datasheet page #29. Sequences of VLDO2 and 3 are OFF.

So can we leave floating VLDO2IN, VLDO2 & VLDO3 pins?? Here floating means leaving floating without decoupling capacitors.

Thanks,

Ritesh.

Re: PF3001 regulators

igorpadykov — Sat, 26 Mar 2016 01:31:40 GMT

Hi Ritesh

one can follow AN4717 Schematic Guidelines for the MMPF0100

recommendations for unused ldos

http://cache.freescale.com/files/analog/doc/app_note/AN4717.pdf

Best regards

igor

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Re: PF3001 regulators

riteshpatel — Sat, 26 Mar 2016 03:58:40 GMT

Thank you igor for your quick response.

I am using PF3001 in my design. Suggested AN4717 sch guideline is for

PF0100. So can i use this recommendations for PF3001 too.??

Re: PF3001 regulators

igorpadykov — Sun, 27 Mar 2016 13:31:22 GMT

yes, this is the same family of pmics using similar technology.

Re: PF3001 regulators

riteshpatel — Tue, 05 Apr 2016 10:23:55 GMT

Hi Igor,

Thank you for your extended support.

We are using PF3001 PMIC in our project.

Is it possible to use PF3000 PMIC drivers on PM3001 PMIC?

If yes, What changes are required?

Re: PF3001 regulators

LuisCasado — Tue, 05 Apr 2016 12:15:50 GMT

Hi,

1. You have patch for PF3001:

2. http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/commit/drivers/regulator/pfuze100-regulator.c?h=imx_3.14.52_1.1.0_ga&i d=19708058f049be9a5dcc81943d1b9a14080367e8

Luis.

Re: PF3001 regulators

dhvanil_patel1 — Tue, 26 Apr 2016 08:06:36 GMT

Hi Luis Casado,

Is PF30001 PMIC patch available for u-boot ? If yes , can you please share PF30001 PMIC patch for u-boot ?

Dhvanil

Re: PF3001 regulators

LuisCasado — Tue, 26 Apr 2016 08:36:24 GMT

Hello,

Patch is public (i.e., latest branch)

http://git.freescale.com/git/cgit.cgi/imx/uboot-imx.git/tree/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c?h=imx_v2015.04_4.1.15_1.0.0_ga&id=2f8eaed32b99e436c085802322407f990c43ee05

Luis

Re: PF3001 regulators

dhvanil_patel1 — Tue, 26 Apr 2016 09:02:59 GMT

Hi Luis,

Thanks for quick response.

I think this patch is related PF300 PMIC. I need patch for PF30001 PMIC.

Can you please share what changes should I have to change in order to use PF300 u-boot driver for PF30001 PMIC.

Dhvanil

Re: PF3001 regulators

LuisCasado — Tue, 26 Apr 2016 12:15:18 GMT

Here:

http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/commit/drivers/regulator/pfuze100-regulator.c?h=imx_3.14.52_1.1.0_ga&id=19708058f049be9a5dcc81943d1b9a14080367e8

Luis