linux-kernel - Re: [PATCH 1/1] arm64: dts: imx8mp-skov: add pinctrl-name 'reset' to fix CHECK

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Message-ID: <CAL_Jsq+6+y5POyWmQnkMB6PJWvH-Gt-qAiJO5gk9N2L5GZT8SQ@mail.gmail.com>
Date: Tue, 6 Jan 2026 15:43:16 -0600
From: Rob Herring <robh@...nel.org>
To: Frank Li <Frank.Li@....com>
Cc: Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Shawn Guo <shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>, 
	Pengutronix Kernel Team <kernel@...gutronix.de>, Fabio Estevam <festevam@...il.com>, 
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" <devicetree@...r.kernel.org>, 
	"open list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" <imx@...ts.linux.dev>, 
	"moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" <linux-arm-kernel@...ts.infradead.org>, 
	open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/1] arm64: dts: imx8mp-skov: add pinctrl-name 'reset' to
 fix CHECK_DTB warning

On Mon, Dec 29, 2025 at 10:51 AM Frank Li <Frank.Li@....com> wrote:
>
> Add pinctrl-name 'reset' to fix below CHECK_DTB 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#
>
> The commit (e469b87e0fb0d dt-bindings: net: dsa: microchip: Add strap
> description to set SPI mode" force use two pinctrl-name 'default' and
> 'reset'. switch@5f doesn't use SPI, so it is safe to use the same pinctrl
> setting for both.
>
> Signed-off-by: Frank Li <Frank.Li@....com>
> ---
>  arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi
> index 020f20c8ce667..7d2fc5fdd3bd1 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi
> @@ -373,8 +373,8 @@ &i2c4 {
>
>         switch: switch@5f {
>                 compatible = "microchip,ksz9893";
> -               pinctrl-names = "default";
> -               pinctrl-0 = <&pinctrl_switch>;
> +               pinctrl-names = "default", "reset";
> +               pinctrl-0 = <&pinctrl_switch>, <&pinctrl_switch>;

I guess this is getting dropped anyways, but this is completely wrong.
"reset" entry here corresponds to pinctrl-1 property. pinctrl-N
properties can have any number of phandles, but those are all one
name.

Rob