linux-kernel - Re: [PATCH V2 12/15] arm64: dts: imx8mn-evk: enable usdhc1

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Message-ID: <20221028150546.cavkbayw6jakd2d6@pengutronix.de>
Date:   Fri, 28 Oct 2022 17:05:46 +0200
From:   Marco Felsch <m.felsch@...gutronix.de>
To:     "Peng Fan (OSS)" <peng.fan@....nxp.com>
Cc:     robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        shawnguo@...nel.org, s.hauer@...gutronix.de,
        devicetree@...r.kernel.org, Peng Fan <peng.fan@....com>,
        linux-kernel@...r.kernel.org, linux-imx@....com,
        kernel@...gutronix.de, festevam@...il.com,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH V2 12/15] arm64: dts: imx8mn-evk: enable usdhc1

On 22-10-24, Peng Fan (OSS) wrote:
> From: Peng Fan <peng.fan@....com>
> 
> Enable usdhc1 for wlan usage, the wifi device node not included.
> 
> Signed-off-by: Peng Fan <peng.fan@....com>
> ---
>  arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi | 69 +++++++++++++++++++
>  1 file changed, 69 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi b/arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi
> index f137eb406c24..50553359401f 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi
> @@ -28,6 +28,13 @@ memory@...00000 {
>  		reg = <0x0 0x40000000 0 0x80000000>;
>  	};
>  
> +	usdhc1_pwrseq: usdhc1_pwrseq {
> +		compatible = "mmc-pwrseq-simple";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&pinctrl_usdhc1_gpio>;
> +		reset-gpios = <&gpio2 10 GPIO_ACTIVE_LOW>;
> +	};
> +
>  	reg_usdhc2_vmmc: regulator-usdhc2 {
>  		compatible = "regulator-fixed";
>  		pinctrl-names = "default";
> @@ -271,6 +278,22 @@ &uart3 {
>  	status = "okay";
>  };
>  
> +&usdhc1 {
> +	#address-cells = <1>;
> +	#size-cells = <0>;

Nit: it is rather uncommon, to place it on-top if you have more than
these two properties to add.

Regards,
  Marco

> +	pinctrl-names = "default", "state_100mhz", "state_200mhz";
> +	pinctrl-0 = <&pinctrl_usdhc1>, <&pinctrl_wlan>;
> +	pinctrl-1 = <&pinctrl_usdhc1_100mhz>, <&pinctrl_wlan>;
> +	pinctrl-2 = <&pinctrl_usdhc1_200mhz>, <&pinctrl_wlan>;
> +	bus-width = <4>;
> +	keep-power-in-suspend;
> +	non-removable;
> +	wakeup-source;
> +	fsl,sdio-async-interrupt-enabled;
> +	mmc-pwrseq = <&usdhc1_pwrseq>;
> +	status = "okay";
> +};
> +
>  &usbotg1 {
>  	dr_mode = "otg";
>  	hnp-disable;
> @@ -474,6 +497,45 @@ MX8MN_IOMUXC_ECSPI1_MISO_UART3_DCE_CTS_B	0x140
>  		>;
>  	};
>  
> +	pinctrl_usdhc1_gpio: usdhc1grpgpio {
> +		fsl,pins = <
> +			MX8MN_IOMUXC_SD1_RESET_B_GPIO2_IO10	0x41
> +		>;
> +	};
> +
> +	pinctrl_usdhc1: usdhc1grp {
> +		fsl,pins = <
> +			MX8MN_IOMUXC_SD1_CLK_USDHC1_CLK		0x190
> +			MX8MN_IOMUXC_SD1_CMD_USDHC1_CMD		0x1d0
> +			MX8MN_IOMUXC_SD1_DATA0_USDHC1_DATA0	0x1d0
> +			MX8MN_IOMUXC_SD1_DATA1_USDHC1_DATA1	0x1d0
> +			MX8MN_IOMUXC_SD1_DATA2_USDHC1_DATA2	0x1d0
> +			MX8MN_IOMUXC_SD1_DATA3_USDHC1_DATA3	0x1d0
> +		>;
> +	};
> +
> +	pinctrl_usdhc1_100mhz: usdhc1grp100mhz {
> +		fsl,pins = <
> +			MX8MN_IOMUXC_SD1_CLK_USDHC1_CLK		0x194
> +			MX8MN_IOMUXC_SD1_CMD_USDHC1_CMD		0x1d4
> +			MX8MN_IOMUXC_SD1_DATA0_USDHC1_DATA0	0x1d4
> +			MX8MN_IOMUXC_SD1_DATA1_USDHC1_DATA1	0x1d4
> +			MX8MN_IOMUXC_SD1_DATA2_USDHC1_DATA2	0x1d4
> +			MX8MN_IOMUXC_SD1_DATA3_USDHC1_DATA3	0x1d4
> +		>;
> +	};
> +
> +	pinctrl_usdhc1_200mhz: usdhc1grp200mhz {
> +		fsl,pins = <
> +			MX8MN_IOMUXC_SD1_CLK_USDHC1_CLK		0x196
> +			MX8MN_IOMUXC_SD1_CMD_USDHC1_CMD		0x1d6
> +			MX8MN_IOMUXC_SD1_DATA0_USDHC1_DATA0	0x1d6
> +			MX8MN_IOMUXC_SD1_DATA1_USDHC1_DATA1	0x1d6
> +			MX8MN_IOMUXC_SD1_DATA2_USDHC1_DATA2	0x1d6
> +			MX8MN_IOMUXC_SD1_DATA3_USDHC1_DATA3	0x1d6
> +		>;
> +	};
> +
>  	pinctrl_usdhc2_gpio: usdhc2gpiogrp {
>  		fsl,pins = <
>  			MX8MN_IOMUXC_GPIO1_IO15_GPIO1_IO15	0x1c4
> @@ -569,4 +631,11 @@ pinctrl_wdog: wdoggrp {
>  			MX8MN_IOMUXC_GPIO1_IO02_WDOG1_WDOG_B		0x166
>  		>;
>  	};
> +
> +	pinctrl_wlan: wlangrp {
> +		fsl,pins = <
> +			MX8MN_IOMUXC_GPIO1_IO00_ANAMIX_REF_CLK_32K	0x141
> +			MX8MN_IOMUXC_SD1_DATA7_GPIO2_IO9		0x159
> +		>;
> +	};
>  };
> -- 
> 2.37.1
> 
> 
>