Re: [PATCH v12 3/5] iio: adc: mt6370: Add MediaTek MT6370 support

From: Jonathan Cameron <jic23@kernel.org>
To: Lee Jones <lee@kernel.org>
Cc: Rob Herring <robh@kernel.org>, ChiaEn Wu <peterwu.pub@gmail.com>,
	pavel@ucw.cz, krzysztof.kozlowski+dt@linaro.org,
	matthias.bgg@gmail.com, lars@metafoo.de,
	andriy.shevchenko@linux.intel.com, chiaen_wu@richtek.com,
	alice_chen@richtek.com, cy_huang@richtek.com,
	linux-leds@vger.kernel.org, devicetree@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org,
	linux-iio@vger.kernel.org, szunichen@gmail.com,
	AngeloGioacchino Del Regno
	<angelogioacchino.delregno@collabora.com>,
	Andy Shevchenko <andy.shevchenko@gmail.com>,
	Jonathan Cameron <Jonathan.Cameron@huawei.com>
Subject: Re: [PATCH v12 3/5] iio: adc: mt6370: Add MediaTek MT6370 support
Date: Sat, 1 Oct 2022 18:11:17 +0100	[thread overview]
Message-ID: <20221001181117.7b3f3297@jic23-huawei> (raw)
In-Reply-To: <YzXbJM31s0P0nLD5@google.com>

On Thu, 29 Sep 2022 18:51:32 +0100
Lee Jones <lee@kernel.org> wrote:

> On Thu, 29 Sep 2022, Rob Herring wrote:
> 
> > On Wed, Sep 28, 2022 at 10:23:42AM +0100, Lee Jones wrote:  
> > > On Mon, 26 Sep 2022, Rob Herring wrote:
> > >   
> > > > On Mon, Sep 26, 2022 at 2:46 AM Lee Jones <lee@kernel.org> wrote:  
> > > > >
> > > > > On Sat, 24 Sep 2022, Jonathan Cameron wrote:
> > > > >  
> > > > > > On Fri, 23 Sep 2022 10:51:24 +0800
> > > > > > ChiaEn Wu <peterwu.pub@gmail.com> wrote:
> > > > > >  
> > > > > > > From: ChiaEn Wu <chiaen_wu@richtek.com>
> > > > > > >
> > > > > > > MediaTek MT6370 is a SubPMIC consisting of a single cell battery charger
> > > > > > > with ADC monitoring, RGB LEDs, dual channel flashlight, WLED backlight
> > > > > > > driver, display bias voltage supply, one general purpose LDO, and the
> > > > > > > USB Type-C & PD controller complies with the latest USB Type-C and PD
> > > > > > > standards.
> > > > > > >
> > > > > > > Add support for the MT6370 ADC driver for system monitoring, including
> > > > > > > charger current, voltage, and temperature.
> > > > > > >
> > > > > > > Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> > > > > > > Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
> > > > > > > Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> > > > > > > Signed-off-by: ChiaEn Wu <chiaen_wu@richtek.com>  
> > > > > >
> > > > > > This will have to either wait for next cycle, or go through mfd because
> > > > > > of the dt-bindings include which is in the mfd tree.
> > > > > >
> > > > > > Please make those dependencies clear in new versions.  
> > > > >
> > > > > If the bindings come together in -next, then subsequently in Mainline,
> > > > > it shouldn't really matter.  
> > > > 
> > > > Except that the bindings haven't come together and at this point may
> > > > not for 6.1. linux-next has been warning for weeks because the child
> > > > device schemas haven't been applied. I've said it before, all the
> > > > schemas for MFD devices need to be applied together. Or at least the
> > > > MFD schema needs to get applied last.
> > > > 
> > > > Furthermore, subsequent versions of this don't get tested and we end
> > > > up with more warnings[1].
> > > > 
> > > > It's only your IIO tree that the DT  
> > > > > tooling with complain about, right?  
> > > > 
> > > > And the MFD tree...
> > > > 
> > > > Please apply the LED bindings (patches 1 and 2) so we can get the
> > > > existing warnings fixed and address any new warnings.  
> > > 
> > > Who usually applies LED bindings?  Looks as though they're good to go.  
> > 
> > Pavel. The issue would be I don't know if the driver side is ready and 
> > those usually go together. Other than my complaining here, how's he 
> > supposed to know that the bindings at least need to be applied?
> > 
> > Again, the process here is not working. I've said before, all the 
> > bindings for an MFD need to go via 1 tree. You obviously don't agree, so 
> > propose something. The current process of no coordination doesn't work.  
> 
> The solution would be for someone to create succinct immutable branches, like
> I do for real code.  If someone would be happy to do that, I'd be more than
> happy to pull from them.
> 
> I go to the effort of creating them to prevent actual build breakages,
> however doing so to keep a documentation helper script happy is a step
> too far for me personally, sorry.
> 

In this case the bindings include is included from the driver - not just the
binding.  Obviously there are dances to get around that by using the values
and replacing in following cycle, but that's not the case here!

Jonathan

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