linux-kernel - Re: [PATCH v7 5/5] mfd: max77541: Add ADI MAX77541/MAX77540 PMIC Support

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Date:   Thu, 29 Jun 2023 11:48:34 -0600
From:   Rob Herring <robh@...nel.org>
To:     Mark Brown <broonie@...nel.org>
Cc:     Lee Jones <lee@...nel.org>,
        William Breathitt Gray <william.gray@...aro.org>,
        "Sahin, Okan" <Okan.Sahin@...log.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Cosmin Tanislav <demonsingur@...il.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Caleb Connolly <caleb.connolly@...aro.org>,
        Marcus Folkesson <marcus.folkesson@...il.com>,
        "Bolboaca, Ramona" <Ramona.Bolboaca@...log.com>,
        ChiYuan Huang <cy_huang@...htek.com>,
        "Tilki, Ibrahim" <Ibrahim.Tilki@...log.com>,
        Arnd Bergmann <arnd@...db.de>,
        Hugo Villeneuve <hvilleneuve@...onoff.com>,
        ChiaEn Wu <chiaen_wu@...htek.com>,
        Haibo Chen <haibo.chen@....com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>
Subject: Re: [PATCH v7 5/5] mfd: max77541: Add ADI MAX77541/MAX77540 PMIC Support

On Thu, Jun 29, 2023 at 10:00 AM Mark Brown <broonie@...nel.org> wrote:
>
> On Thu, Jun 29, 2023 at 04:51:34PM +0100, Lee Jones wrote:
> > On Thu, 29 Jun 2023, Mark Brown wrote:
>
> > > The thing that's causing a lot of the issues here is that you're only
> > > applying the serieses en masse, blocking things on getting absolutely
> > > everything lined up (including this time over a merge window).  I really
> > > don't understand why you feel you're forced to batch everything together
> > > like this.
>
> > https://lore.kernel.org/all/CAL_Jsq+Z64tuMO8a2Y=2GrXZ8q0L4Z2avCiphsn0HOOC71Dzjg@mail.gmail.com/
>
> That says it's a bit unusual to use a separate branch with a PR, it
> doesn't say anything about it being the end of the world to pick up
> parts of a series that are ready without picking up the whole lot,
> especially when we're getting to the merge window.

There's some risk the core part could change affecting the sub
components after you pick it up, or that the author just abandons
getting the core part upstream and we're left with a dead driver.

I'm fine if the sub-components are picked up first (and land in next
first), but the MFD binding picked up first is a problem usually. And
that has happened multiple times. Also, it does mean the MFD branch
will have binding warnings, but that's Lee's problem if he cares
(probably not).

Rob