linux-kernel - RE: [PATCH v2 1/2] ARM: dts: add dtsi for palmas

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Date:	Tue, 11 Jun 2013 04:10:50 +0000
From:	"J, KEERTHY" <j-keerthy@...com>
To:	Stephen Warren <swarren@...dotorg.org>
CC:	"Cousson, Benoit" <b-cousson@...com>,
	"devicetree-discuss@...ts.ozlabs.org" 
	<devicetree-discuss@...ts.ozlabs.org>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"ldewangan@...dia.com" <ldewangan@...dia.com>,
	"grant.likely@...retlab.ca" <grant.likely@...retlab.ca>,
	"swarren@...dia.com" <swarren@...dia.com>,
	"sameo@...ux.intel.com" <sameo@...ux.intel.com>,
	"gg@...mlogic.co.uk" <gg@...mlogic.co.uk>,
	"lee.jones@...aro.org" <lee.jones@...aro.org>
Subject: RE: [PATCH v2 1/2] ARM: dts: add dtsi for palmas

Hi Stephen,

> -----Original Message-----
> From: Stephen Warren [mailto:swarren@...dotorg.org]
> Sent: Monday, June 10, 2013 9:59 PM
> To: J, KEERTHY
> Cc: Cousson, Benoit; devicetree-discuss@...ts.ozlabs.org; linux-
> omap@...r.kernel.org; linux-kernel@...r.kernel.org;
> ldewangan@...dia.com; grant.likely@...retlab.ca; swarren@...dia.com;
> sameo@...ux.intel.com; gg@...mlogic.co.uk; lee.jones@...aro.org
> Subject: Re: [PATCH v2 1/2] ARM: dts: add dtsi for palmas
> 
> On 06/10/2013 03:04 AM, J Keerthy wrote:
> > Adds palmas mfd and palmas regulator nodes.
> 
> Nits:
> 
> Well, you're really adding files that provide the nodes, not the nodes
> themselves.
> 
> Palmas and MFD should be correctly capitalized.

Ok.

> 
> > diff --git a/arch/arm/boot/dts/palmas.dtsi
> > b/arch/arm/boot/dts/palmas.dtsi
> 
> > +&palmas {
> ...
> > +	palmas_pmic {
> ...
> > +		ti,ldo6-vibrator;
> 
> Isn't that board-specific? I don't know the HW well enough to say, but
> I assume that since there's a property, the whole point must be that
> some boards want it set and some don't.
> 

Yes. I will make this part of board file.

> > +		regulators {
> > +			smps123_reg: smps123 {
> > +				regulator-name = "smps123";
> > +			};
> 
> So the node labels here duplicate those in omap5-uevm.dts in patch 2/2.
> While dtc allows this, I don't think there's much point duplicating the
> labels. I'd tend to only put the labels in omap5-uevm.dts and not put
> them here. That will completely avoid the possibility of the labels in
> this file from conflicting with any other labels in any top-level
> board.dts file.
> 
> I also wonder if this file is actually terribly useful. The only thing
> that this file provides is the regulator-name property. It seems
> simpler just to put that into each board.dts file. The added advantage
> of doing that, is that if a board doesn't use a particular regulator,
> the node won't appear, and the regulator won't get registered.

Ok. I will transfer the entire code to omap5-uevm.dts.

Thanks for the review comments.

Regards,
Keerthy
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