linux-kernel - Re: [PATCH v5 1/4] dt-bindings: backlight: Add max25014 supporty

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Message-ID: <20251107-estimator-flap-158b1dc054af@spud>
Date: Fri, 7 Nov 2025 17:14:38 +0000
From: Conor Dooley <conor@...nel.org>
To: Frank Li <Frank.li@....com>
Cc: maudspierings@...ontroll.com, Lee Jones <lee@...nel.org>,
	Daniel Thompson <danielt@...nel.org>,
	Jingoo Han <jingoohan1@...il.com>, Pavel Machek <pavel@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Helge Deller <deller@....de>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>, dri-devel@...ts.freedesktop.org,
	linux-leds@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-fbdev@...r.kernel.org,
	imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v5 1/4] dt-bindings: backlight: Add max25014 supporty

On Fri, Nov 07, 2025 at 10:35:04AM -0500, Frank Li wrote:
> On Fri, Nov 07, 2025 at 01:49:58PM +0100, Maud Spierings via B4 Relay wrote:
> > From: Maud Spierings <maudspierings@...ontroll.com>
> >
> > The Maxim MAX25014 is a 4-channel automotive grade backlight driver IC
> > with integrated boost controller.
> >
> > Signed-off-by: Maud Spierings <maudspierings@...ontroll.com>


> > +  led@0:
> > +    type: object
> > +    description: Properties for a string of connected LEDs.
> > +    $ref: common.yaml#
> > +
> > +    properties:
> > +      reg:
> > +        const: 0
> 
> If reg is const 0, why need use led@0?

> > In the current implementation the control registers for channel 1,
> > control all channels. So only one led subnode with led-sources is
> > supported right now. If at some point the driver functionality is
> > expanded the bindings can be easily extended with it.

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