linux-kernel - Re: [PATCH v6 8/8] mfd: axp20x: Add supported cells for AXP803

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Date:   Sat, 8 Dec 2018 16:05:26 +0100
From:   Quentin Schulz <quentin.schulz@...tlin.com>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     Vasily Khoruzhick <anarsoul@...il.com>,
        Oskari Lemmela <oskari@...mela.net>,
        Sebastian Reichel <sre@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Chen-Yu Tsai <wens@...e.org>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        linux-pm@...r.kernel.org, devicetree <devicetree@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        arm-linux <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v6 8/8] mfd: axp20x: Add supported cells for AXP803

Hi Lee,

On Fri, Dec 07, 2018 at 07:22:37PM +0000, Lee Jones wrote:
> On Fri, 07 Dec 2018, Vasily Khoruzhick wrote:
> 
> > On Fri, Dec 7, 2018 at 8:40 AM Lee Jones <lee.jones@...aro.org> wrote:
> > 
> > > My OCD-dar is going crazy.
> > >
> > > Why haven't you used the same alignment as is already there?
> > >
> > > If it starts to run over 80-chars then bring the others back.
> > >
> > > Also why is there a single liner shoved in the middle of the
> > > multi-line entries?  Please move the singles to the top or the
> > > bottom.
> > 
> > Hi Lee,
> > 
> > Could you please reformat it in the way that makes your OCD-dar happy?
> > It would be really nice to get
> 
> I'm afraid not, for a multitude of reasons.
> 
> The most important of which surround testing.
> 
> > AC and battery support for APX8x3 merged -- it'll make Pinebook and
> > Teres-I pretty well supported by mainline kernel.
> 
> That's great.  A worthy cause indeed.  So I'm sure you guys will want
> to turn the patch around in short order so that it's applied in time
> for the next merge window.
> 

Aren't the MFD cells probed in order?

In that case, it makes little sense to short order them for this
particular device (X-Powers PMICs in general). It will just make the
system boot slower because of probe deferring.

Why? As explained by Chen-Yu in v3[1], axp-gpios can be muxed as
regulators, thus should be probed before axp-regulators. axp-adc is
often used by axp-battery, axp-usb-power, axp-ac-power, thus should be
probed beforehand as well.

For the alignment that also triggered your OCD, I can send you a patch
the day you merge this one if it can help. I sent a few patches for this
driver that didn't respect the alignment so I'm fine fixing the mfd
cells (and eventually re-order them as I saw a few axp-gpio cells being
declared after axp-regulators).

Does that make this patch OK for you, Lee?

Thanks,
Quentin

[1] https://lkml.org/lkml/2018/10/11/338

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