linux-kernel - Re: da9052-regulator fails to probe in linux-next

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Date:	Tue, 9 Dec 2014 19:34:09 -0200
From:	Fabio Estevam <festevam@...il.com>
To:	Mark Brown <broonie@...nel.org>
Cc:	anthony.olech.opensource@...semi.com,
	support.opensource@...semi.com,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Olof Johansson <olof@...om.net>
Subject: Re: da9052-regulator fails to probe in linux-next

Hi Mark,

On Tue, Dec 9, 2014 at 7:27 PM, Mark Brown <broonie@...nel.org> wrote:
> On Tue, Dec 09, 2014 at 07:17:14PM -0200, Fabio Estevam wrote:
>
>> Seem like this issue is not specific to the da9052 regulator.
>
>> On a imx6q-wandboard we can see the internal anatop regulators being
>> probed on linux-next 20141031:
>> http://arm-soc.lixom.net/bootlogs/next/next-20141031/wandboard-arm-imx_v6_v7_defconfig.html
>>
>> [    0.072014] vdd1p1: 800 <--> 1375 mV at 1100 mV
>> [    0.073027] vdd3p0: 2800 <--> 3150 mV at 3000 mV
>> [    0.073933] vdd2p5: 2000 <--> 2750 mV at 2400 mV
>> [    0.074888] vddarm: 725 <--> 1450 mV at 1150 mV
>> [    0.075935] vddpu: 725 <--> 1450 mV at 1150 mV
>> [    0.076897] vddsoc: 725 <--> 1450 mV at 1200 mV
>
>> ,but since next-20141103 they do not probe anymore:
>> http://arm-soc.lixom.net/bootlogs/next/next-20141103/wandboard-arm-imx_v6_v7_defconfig.html
>
> That last log looks *extremely* unhappy in general, I can't actually see
> any references to attempts to do regulator things and there's lots of
> backtraces in there.  AFAICT those regulators are anatop regulators and
> I can't find references to that driver or anything called "vdd".

Yes, so here is a cleaner one:
http://arm-soc.lixom.net/bootlogs/next/next-20141104/wandboard-arm-imx_v6_v7_defconfig.html

The anatop regulators is drivers/regulator/pfuze100-regulator.c and
the dt description is at:
arch/arm/boot/dts/imx6qdl.dtsi

On 20141104 they are not getting probed.
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