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

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Message-ID: <20260105111448.slm2yqiwivx2t3vh@pengutronix.de>
Date: Mon, 5 Jan 2026 12:14:48 +0100
From: Marco Felsch <m.felsch@...gutronix.de>
To: Frank Li <Frank.Li@....com>
Cc: Rob Herring <robh@...nel.org>, 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

Hi Frank,

On 25-12-29, Frank Li 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.

please see:
- https://lore.kernel.org/all/20251112084717.ea7fchu7jcz6dzsi@pengutronix.de/

I stumbled over the same warning, but came to the conclusion, that the
dt-bindings should be fixed instead of workaround broken bindings within
the dtb.

Regards,
  Marco

> 
> 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>;
>  		reset-gpios = <&gpio5 1 GPIO_ACTIVE_LOW>;
>  		reg = <0x5f>;
>  
> -- 
> 2.34.1
> 
> 
> 

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