linux-kernel - Re: [PATCH V2 6/6] regulator: max77620: add regulator driver for max77620/max20024

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Message-ID: <20160113155154.GN6588@sirena.org.uk>
Date:	Wed, 13 Jan 2016 15:51:54 +0000
From:	Mark Brown <broonie@...nel.org>
To:	Laxman Dewangan <ldewangan@...dia.com>
Cc:	Krzysztof Kozlowski <k.kozlowski@...sung.com>, robh+dt@...nel.org,
	pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	linus.walleij@...aro.org, gnurou@...il.com, lee.jones@...aro.org,
	a.zummo@...ertech.it, alexandre.belloni@...e-electrons.com,
	lgirdwood@...il.com, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
	rtc-linux@...glegroups.com, swarren@...dia.com, treding@...dia.com,
	Mallikarjun Kasoju <mkasoju@...dia.com>
Subject: Re: [PATCH V2 6/6] regulator: max77620: add regulator driver for
 max77620/max20024

On Wed, Jan 13, 2016 at 08:12:10PM +0530, Laxman Dewangan wrote:
> On Wednesday 13 January 2016 07:50 PM, Mark Brown wrote:
> >On Wed, Jan 13, 2016 at 06:41:11PM +0530, Laxman Dewangan wrote:
> >>On Wednesday 13 January 2016 06:39 PM, Mark Brown wrote:

> >>>What is "it" and why can't we check what the current configuration is
> >>>while setting FPS to NONE?

> >>I will have platform specific data in callback of enable/disable only.
> >>Which call back do I need to set this? enable/disable or post register?

> >I'm sorry but I can't parse what you're saying here.

> Here, before machine constraint applies, I need to configure FPS on desired
> source.

I'm a bit confused here - I had thought you needed things the other way
around?  Can you describe in concrete terms what you want to configure?

> >>>>I need to set the FPS src properly for each rails before callback happen
> >>>>from regulator init so that enable/disable/is_enable can handle it properly.

> >>>Why not just reorder the callback so it happens before the constraints
> >>>are applied?

> >>which callback I need to reorder for getting the context for configruation?
> >The existing call to parse the DT.

> Are we allow to do i2c transfer in the existing callback for parsing the DT?

Yes, of course.

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