linux-kernel - Re: [PATCH V2 2/2] arm64: dts: imx8mp-evk: Add usdhc1 for SDIO WiFi support

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Message-ID: <aYS0Cq6UmCDlmd4M@lizhi-Precision-Tower-5810>
Date: Thu, 5 Feb 2026 10:15:22 -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,
	s.hauer@...gutronix.de, festevam@...il.com, imx@...ts.linux.dev,
	kernel@...gutronix.de, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH V2 2/2] arm64: dts: imx8mp-evk: Add usdhc1 for SDIO WiFi
 support

On Thu, Feb 05, 2026 at 03:34:54PM +0800, Sherry Sun wrote:
> Add usdhc1 to support M.2 SDIO WiFi on i.MX8MP EVK board.
>
> Signed-off-by: Sherry Sun <sherry.sun@....com>
> ---
Reviewed-by: Frank Li <Frank.Li@....com>
>  arch/arm64/boot/dts/freescale/imx8mp-evk.dts | 61 +++++++++++++++++++-
>  1 file changed, 60 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
> index a1269c7a6cc2..dfcdcc739ec6 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
> @@ -134,7 +134,7 @@ reg_audio_pwr: regulator-audio-pwr {
>  		enable-active-high;
>  	};
>
> -	reg_pcie0: regulator-pcie {
> +	reg_m2_wlan: reg_pcie0: regulator-pcie {
>  		compatible = "regulator-fixed";
>  		pinctrl-names = "default";
>  		pinctrl-0 = <&pinctrl_pcie0_reg>;
> @@ -250,6 +250,13 @@ cpu {
>  		};
>  	};
>
> +	usdhc1_pwrseq: usdhc1_pwrseq {
> +		compatible = "mmc-pwrseq-simple";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&pinctrl_usdhc1_pwrseq>;
> +		reset-gpios = <&gpio2 10 GPIO_ACTIVE_LOW>;
> +	};
> +
>  	reserved-memory {
>  		#address-cells = <2>;
>  		#size-cells = <2>;
> @@ -863,6 +870,19 @@ &uart3 {
>  	status = "okay";
>  };
>
> +&usdhc1 {
> +	pinctrl-names = "default", "state_100mhz", "state_200mhz";
> +	pinctrl-0 = <&pinctrl_usdhc1>;
> +	pinctrl-1 = <&pinctrl_usdhc1_100mhz>;
> +	pinctrl-2 = <&pinctrl_usdhc1_200mhz>;
> +	keep-power-in-suspend;
> +	non-removable;
> +	wakeup-source;
> +	mmc-pwrseq = <&usdhc1_pwrseq>;
> +	vmmc-supply = <&reg_m2_wlan>;
> +	status = "okay";
> +};
> +
>  &usdhc2 {
>  	assigned-clocks = <&clk IMX8MP_CLK_USDHC2>;
>  	assigned-clock-rates = <400000000>;
> @@ -1169,6 +1189,45 @@ MX8MP_IOMUXC_ECSPI1_MISO__UART3_DCE_CTS		0x140
>  		>;
>  	};
>
> +	pinctrl_usdhc1: usdhc1grp {
> +		fsl,pins = <
> +			MX8MP_IOMUXC_SD1_CLK__USDHC1_CLK	0x190
> +			MX8MP_IOMUXC_SD1_CMD__USDHC1_CMD	0x1d0
> +			MX8MP_IOMUXC_SD1_DATA0__USDHC1_DATA0	0x1d0
> +			MX8MP_IOMUXC_SD1_DATA1__USDHC1_DATA1	0x1d0
> +			MX8MP_IOMUXC_SD1_DATA2__USDHC1_DATA2	0x1d0
> +			MX8MP_IOMUXC_SD1_DATA3__USDHC1_DATA3	0x1d0
> +		>;
> +	};
> +
> +	pinctrl_usdhc1_100mhz: usdhc1-100mhzgrp {
> +		fsl,pins = <
> +			MX8MP_IOMUXC_SD1_CLK__USDHC1_CLK	0x194
> +			MX8MP_IOMUXC_SD1_CMD__USDHC1_CMD	0x1d4
> +			MX8MP_IOMUXC_SD1_DATA0__USDHC1_DATA0	0x1d4
> +			MX8MP_IOMUXC_SD1_DATA1__USDHC1_DATA1	0x1d4
> +			MX8MP_IOMUXC_SD1_DATA2__USDHC1_DATA2	0x1d4
> +			MX8MP_IOMUXC_SD1_DATA3__USDHC1_DATA3	0x1d4
> +		>;
> +	};
> +
> +	pinctrl_usdhc1_200mhz: usdhc1-200mhzgrp {
> +		fsl,pins = <
> +			MX8MP_IOMUXC_SD1_CLK__USDHC1_CLK	0x196
> +			MX8MP_IOMUXC_SD1_CMD__USDHC1_CMD	0x1d6
> +			MX8MP_IOMUXC_SD1_DATA0__USDHC1_DATA0	0x1d6
> +			MX8MP_IOMUXC_SD1_DATA1__USDHC1_DATA1	0x1d6
> +			MX8MP_IOMUXC_SD1_DATA2__USDHC1_DATA2	0x1d6
> +			MX8MP_IOMUXC_SD1_DATA3__USDHC1_DATA3	0x1d6
> +		>;
> +	};
> +
> +	pinctrl_usdhc1_pwrseq: usdhc1pwrseq {
> +		fsl,pins = <
> +			MX8MP_IOMUXC_SD1_RESET_B__GPIO2_IO10	0x140
> +		>;
> +	};
> +
>  	pinctrl_usdhc2: usdhc2grp {
>  		fsl,pins = <
>  			MX8MP_IOMUXC_SD2_CLK__USDHC2_CLK	0x190
> --
> 2.37.1
>