linux-kernel - Re: [PATCH V4 3/4] arm64: dts: imx93: Add imx93w.dtsi for i.MX93 Wireless SiP

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Message-ID: <aXuaW5Wb9YuV68Dh@lizhi-Precision-Tower-5810>
Date: Thu, 29 Jan 2026 12:35:23 -0500
From: Frank Li <Frank.li@....com>
To: Sherry Sun <sherry.sun@....com>
Cc: robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org,
	shawnguo@...nel.org, s.hauer@...gutronix.de, festevam@...il.com,
	daniel.baluta@....com, dario.binacchi@...rulasolutions.com,
	alexander.stein@...tq-group.com, Markus.Niebel@...group.com,
	matthias.schiffer@...group.com, y.moog@...tec.de,
	josua@...id-run.com, francesco.dolcini@...adex.com,
	primoz.fiser@...ik.com, kernel@...gutronix.de,
	devicetree@...r.kernel.org, imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V4 3/4] arm64: dts: imx93: Add imx93w.dtsi for i.MX93
 Wireless SiP

On Thu, Jan 29, 2026 at 04:42:48PM +0800, Sherry Sun wrote:
> Introduce imx93w.dtsi to describe the new NXP i.MX93 Wireless SiP, which
> integrates the i.MX93 application processor with the NXP IW610 WLCSP
> (Wi-Fi + Bluetooth LE + 802.15.4) connectivity device.
>
> The new imx93w.dtsi is based on imx93.dtsi and adds the pieces required
> for the internal connection between i.MX93 and IW610 inside the SiP.
> This includes USDHC3 which is used as the host interface to the IW610
> and the required GPIO settings(e.g. WL_RST, WL_REG_ON, etc.).
>
> These nodes reflect internal SiP wiring and are not board specific, so
> they are placed in a dedicated imx93w.dtsi file that can be reused by
> multiple boards adopting the i.MX93 Wireless SiP.
>
> Signed-off-by: Sherry Sun <sherry.sun@....com>
> ---

Reviewed-by: Frank Li <Frank.Li@....com>

>  arch/arm64/boot/dts/freescale/imx93w.dtsi | 102 ++++++++++++++++++++++
>  1 file changed, 102 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/freescale/imx93w.dtsi
>
> diff --git a/arch/arm64/boot/dts/freescale/imx93w.dtsi b/arch/arm64/boot/dts/freescale/imx93w.dtsi
> new file mode 100644
> index 000000000000..30da79685fec
> --- /dev/null
> +++ b/arch/arm64/boot/dts/freescale/imx93w.dtsi
> @@ -0,0 +1,102 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * Copyright 2026 NXP
> + */
> +
> +#include "imx93.dtsi"
> +
> +/ {
> +	reg_usdhc3_vmmc: regulator-usdhc3 {
> +		compatible = "regulator-fixed";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&pinctrl_reg_usdhc3_vmmc>;
> +		regulator-name = "WLAN_EN";
> +		regulator-min-microvolt = <3300000>;
> +		regulator-max-microvolt = <3300000>;
> +		gpio = <&gpio2 29 GPIO_ACTIVE_HIGH>;
> +		enable-active-high;
> +	};
> +
> +	usdhc3_pwrseq: usdhc3_pwrseq {
> +		compatible = "mmc-pwrseq-simple";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&pinctrl_usdhc3_pwrseq>;
> +		reset-gpios = <&gpio1 10 GPIO_ACTIVE_LOW>;
> +	};
> +};
> +
> +&usdhc3 {
> +	pinctrl-names = "default", "state_100mhz", "state_200mhz", "sleep";
> +	pinctrl-0 = <&pinctrl_usdhc3>;
> +	pinctrl-1 = <&pinctrl_usdhc3_100mhz>;
> +	pinctrl-2 = <&pinctrl_usdhc3_200mhz>;
> +	pinctrl-3 = <&pinctrl_usdhc3_sleep>;
> +	mmc-pwrseq = <&usdhc3_pwrseq>;
> +	vmmc-supply = <&reg_usdhc3_vmmc>;
> +	bus-width = <4>;
> +	keep-power-in-suspend;
> +	non-removable;
> +	wakeup-source;
> +	status = "okay";
> +};
> +
> +&iomuxc {
> +	pinctrl_reg_usdhc3_vmmc: regusdhc3vmmcgrp {
> +		fsl,pins = <
> +			MX93_PAD_GPIO_IO29__GPIO2_IO29			0x31e
> +		>;
> +	};
> +
> +	/* need to config the SION for data and cmd pad, refer to ERR052021 */
> +	pinctrl_usdhc3: usdhc3grp {
> +		fsl,pins = <
> +			MX93_PAD_SD3_CLK__USDHC3_CLK		0x1582
> +			MX93_PAD_SD3_CMD__USDHC3_CMD		0x40001382
> +			MX93_PAD_SD3_DATA0__USDHC3_DATA0	0x40001382
> +			MX93_PAD_SD3_DATA1__USDHC3_DATA1	0x40001382
> +			MX93_PAD_SD3_DATA2__USDHC3_DATA2	0x40001382
> +			MX93_PAD_SD3_DATA3__USDHC3_DATA3	0x40001382
> +		>;
> +	};
> +
> +	/* need to config the SION for data and cmd pad, refer to ERR052021 */
> +	pinctrl_usdhc3_100mhz: usdhc3-100mhzgrp {
> +		fsl,pins = <
> +			MX93_PAD_SD3_CLK__USDHC3_CLK		0x158e
> +			MX93_PAD_SD3_CMD__USDHC3_CMD		0x4000138e
> +			MX93_PAD_SD3_DATA0__USDHC3_DATA0	0x4000138e
> +			MX93_PAD_SD3_DATA1__USDHC3_DATA1	0x4000138e
> +			MX93_PAD_SD3_DATA2__USDHC3_DATA2	0x4000138e
> +			MX93_PAD_SD3_DATA3__USDHC3_DATA3	0x4000138e
> +		>;
> +	};
> +
> +	/* need to config the SION for data and cmd pad, refer to ERR052021 */
> +	pinctrl_usdhc3_200mhz: usdhc3-200mhzgrp {
> +		fsl,pins = <
> +			MX93_PAD_SD3_CLK__USDHC3_CLK		0x15fe
> +			MX93_PAD_SD3_CMD__USDHC3_CMD		0x400013fe
> +			MX93_PAD_SD3_DATA0__USDHC3_DATA0	0x400013fe
> +			MX93_PAD_SD3_DATA1__USDHC3_DATA1	0x400013fe
> +			MX93_PAD_SD3_DATA2__USDHC3_DATA2	0x400013fe
> +			MX93_PAD_SD3_DATA3__USDHC3_DATA3	0x400013fe
> +		>;
> +	};
> +
> +	pinctrl_usdhc3_sleep: usdhc3grpsleepgrp {
> +		fsl,pins = <
> +			MX93_PAD_SD3_CLK__GPIO3_IO20		0x31e
> +			MX93_PAD_SD3_CMD__GPIO3_IO21		0x31e
> +			MX93_PAD_SD3_DATA0__GPIO3_IO22		0x31e
> +			MX93_PAD_SD3_DATA1__GPIO3_IO23		0x31e
> +			MX93_PAD_SD3_DATA2__GPIO3_IO24		0x31e
> +			MX93_PAD_SD3_DATA3__GPIO3_IO25		0x31e
> +		>;
> +	};
> +
> +	pinctrl_usdhc3_pwrseq: usdhc3pwrseqgrp {
> +		fsl,pins = <
> +			MX93_PAD_PDM_BIT_STREAM1__GPIO1_IO10		0x31e
> +		>;
> +	};
> +};
> --
> 2.37.1
>