linux-kernel - Re: [PATCH 1/1] dt-bindings: net: dsa: microchip: Make pinctrl 'reset' optional

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Message-ID: <CAL_JsqJxKvrOWq6Y=nRzPz+W0HYGR1Egy8qcGnd_6XDFOCfcFQ@mail.gmail.com>
Date: Tue, 6 Jan 2026 15:44:49 -0600
From: Rob Herring <robh@...nel.org>
To: Frank Li <Frank.Li@....com>
Cc: Woojung Huh <woojung.huh@...rochip.com>, 
	"maintainer:MICROCHIP KSZ SERIES ETHERNET SWITCH DRIVER" <UNGLinuxDriver@...rochip.com>, Andrew Lunn <andrew@...n.ch>, 
	Vladimir Oltean <olteanv@...il.com>, "David S. Miller" <davem@...emloft.net>, 
	Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, Marek Vasut <marex@...x.de>, 
	"open list:MICROCHIP KSZ SERIES ETHERNET SWITCH DRIVER" <netdev@...r.kernel.org>, 
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" <devicetree@...r.kernel.org>, open list <linux-kernel@...r.kernel.org>, 
	m.felsch@...gutronix.de, imx@...ts.linux.dev, shawnguo@...nel.org
Subject: Re: [PATCH 1/1] dt-bindings: net: dsa: microchip: Make pinctrl
 'reset' optional

On Tue, Jan 6, 2026 at 8:36 AM Frank Li <Frank.Li@....com> wrote:
>
> Commit e469b87e0fb0d ("dt-bindings: net: dsa: microchip: Add strap
> description to set SPI mode") required both 'default' and 'reset' pinctrl
> states for all compatible devices. However, this requirement should be only
> applicable to KSZ8463.
>
> Make the 'reset' pinctrl state optional for all other Microchip DSA
> devices while keeping it mandatory for KSZ8463.
>
> Fix below CHECK_DTBS warnings:
>   arch/arm64/boot/dts/freescale/imx8mp-skov-basic.dtb: switch@5f (microchip,ksz9893): pinctrl-names: ['default'] is too short
>         from schema $id: http://devicetree.org/schemas/net/dsa/microchip,ksz.yaml#
>
> Signed-off-by: Frank Li <Frank.Li@....com>
> ---
>  Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml | 3 +++
>  1 file changed, 3 insertions(+)

Reviewed-by: Rob Herring (Arm) <robh@...nel.org>