linux-kernel - Re: [PATCH] dt-bindings: mfd: syscon: Add more simple compatibles

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Date: Mon, 13 May 2024 09:55:04 +0200
From: Miquel Raynal <miquel.raynal@...tlin.com>
To: "Rob Herring (Arm)" <robh@...nel.org>
Cc: Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Nicolas Ferre <nicolas.ferre@...rochip.com>,
 Alexandre Belloni <alexandre.belloni@...tlin.com>, Claudiu Beznea
 <claudiu.beznea@...on.dev>, Andrew Lunn <andrew@...n.ch>, Sebastian
 Hesselbarth <sebastian.hesselbarth@...il.com>, Gregory Clement
 <gregory.clement@...tlin.com>, Michael Turquette <mturquette@...libre.com>,
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 UNGLinuxDriver@...rochip.com, Thomas Bogendoerfer
 <tsbogend@...ha.franken.de>, Richard Weinberger <richard@....at>, Vignesh
 Raghavendra <vigneshr@...com>, Yisen Zhuang <yisen.zhuang@...wei.com>,
 Salil Mehta <salil.mehta@...wei.com>, "David S. Miller"
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 <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Matthias Brugger
 <matthias.bgg@...il.com>, AngeloGioacchino Del Regno
 <angelogioacchino.delregno@...labora.com>, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-clk@...r.kernel.org, linux-mips@...r.kernel.org,
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 linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH] dt-bindings: mfd: syscon: Add more simple compatibles

Hi Rob,

robh@...nel.org wrote on Fri, 10 May 2024 07:30:14 -0500:

> Add another batch of various "simple" syscon compatibles which were
> undocumented or still documented with old text bindings. Remove the old
> text binding docs for the ones which were documented.

..

>  .../devicetree/bindings/mtd/atmel-nand.txt    |  9 ------

I don't know how useful are these compatibles, but if I take the case
of atmel,sama5d3-nfc-io, it is only described in this file, while
several DTSI reference it. After this change they will no longer be
referenced at all but still in use. Is this intended? Shall these
compatibles be totally dropped from the device trees as well?

$ git grep -c atmel,sama5d3-nfc-io arch/
arch/arm/boot/dts/microchip/sama5d2.dtsi:1
arch/arm/boot/dts/microchip/sama5d3.dtsi:1
arch/arm/boot/dts/microchip/sama5d4.dtsi:1
arch/arm/boot/dts/microchip/sama7g5.dtsi:1

Thanks,
Miquèl