linux-kernel - Re: [PATCH V4 12/14] arm64: dts: imx8mm-evk: Enable usdhc1 to support wifi

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Date:   Fri, 11 Nov 2022 10:02:32 +0100
From:   Marco Felsch <m.felsch@...gutronix.de>
To:     "Peng Fan (OSS)" <peng.fan@....nxp.com>
Cc:     shawnguo@...nel.org, s.hauer@...gutronix.de,
        Peng Fan <peng.fan@....com>, linux-kernel@...r.kernel.org,
        Sherry Sun <sherry.sun@....com>, kernel@...gutronix.de,
        festevam@...il.com, linux-arm-kernel@...ts.infradead.org,
        linux-imx@....com
Subject: Re: [PATCH V4 12/14] arm64: dts: imx8mm-evk: Enable usdhc1 to
 support wifi

Hi Peng,

On 22-11-11, Peng Fan (OSS) wrote:
> From: Sherry Sun <sherry.sun@....com>
> 
> Enable usdhc1 which is used for wifi.
> 
> Signed-off-by: Sherry Sun <sherry.sun@....com>
> Signed-off-by: Peng Fan <peng.fan@....com>
> ---
>  arch/arm64/boot/dts/freescale/imx8mm-evk.dts  | 27 +++++++++++++
>  arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi | 39 +++++++++++++++++++
>  2 files changed, 66 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
> index a2b24d4d4e3e..7b80f144327d 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
> @@ -15,6 +15,13 @@ / {
>  	aliases {
>  		spi0 = &flexspi;
>  	};
> +
> +	usdhc1_pwrseq: usdhc1_pwrseq {
> +		compatible = "mmc-pwrseq-simple";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&pinctrl_usdhc1_gpio>;
> +		reset-gpios = <&gpio2 10 GPIO_ACTIVE_LOW>;
> +	};
>  };
>  
>  &ddrc {
> @@ -53,6 +60,19 @@ flash@0 {
>  	};
>  };
>  
> +&usdhc1 {
> +	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;
> +	mmc-pwrseq = <&usdhc1_pwrseq>;
> +	non-removable;
> +	wakeup-source;
> +	status = "okay";
> +};
> +
>  &usdhc3 {
>  	assigned-clocks = <&clk IMX8MM_CLK_USDHC3_ROOT>;
>  	assigned-clock-rates = <400000000>;
> @@ -125,4 +145,11 @@ MX8MM_IOMUXC_NAND_CLE_USDHC3_DATA7              0x1d6
>  			MX8MM_IOMUXC_NAND_CE1_B_USDHC3_STROBE           0x196
>  		>;
>  	};
> +
> +	pinctrl_wlan: wlangrp {
> +		fsl,pins = <
> +			MX8MM_IOMUXC_GPIO1_IO00_ANAMIX_REF_CLK_32K	0x141
> +			MX8MM_IOMUXC_SD1_DATA7_GPIO2_IO9		0x159
> +		>;
> +	};

Out of curiousity, this is not shareable with the other ddr4 evk?

Regards,
  Marco

>  };
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
> index 7d6317d95b13..ce450965e837 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
> @@ -559,6 +559,45 @@ MX8MM_IOMUXC_UART2_TXD_UART2_DCE_TX	0x140
>  		>;
>  	};
>  
> +	pinctrl_usdhc1_gpio: usdhc1grpgpio {
> +		fsl,pins = <
> +			MX8MM_IOMUXC_SD1_RESET_B_GPIO2_IO10	0x41
> +		>;
> +	};
> +
> +	pinctrl_usdhc1: usdhc1grp {
> +		fsl,pins = <
> +			MX8MM_IOMUXC_SD1_CLK_USDHC1_CLK		0x190
> +			MX8MM_IOMUXC_SD1_CMD_USDHC1_CMD		0x1d0
> +			MX8MM_IOMUXC_SD1_DATA0_USDHC1_DATA0	0x1d0
> +			MX8MM_IOMUXC_SD1_DATA1_USDHC1_DATA1	0x1d0
> +			MX8MM_IOMUXC_SD1_DATA2_USDHC1_DATA2	0x1d0
> +			MX8MM_IOMUXC_SD1_DATA3_USDHC1_DATA3	0x1d0
> +		>;
> +	};
> +
> +	pinctrl_usdhc1_100mhz: usdhc1grp100mhz {
> +		fsl,pins = <
> +			MX8MM_IOMUXC_SD1_CLK_USDHC1_CLK		0x194
> +			MX8MM_IOMUXC_SD1_CMD_USDHC1_CMD		0x1d4
> +			MX8MM_IOMUXC_SD1_DATA0_USDHC1_DATA0	0x1d4
> +			MX8MM_IOMUXC_SD1_DATA1_USDHC1_DATA1	0x1d4
> +			MX8MM_IOMUXC_SD1_DATA2_USDHC1_DATA2	0x1d4
> +			MX8MM_IOMUXC_SD1_DATA3_USDHC1_DATA3	0x1d4
> +		>;
> +	};
> +
> +	pinctrl_usdhc1_200mhz: usdhc1grp200mhz {
> +		fsl,pins = <
> +			MX8MM_IOMUXC_SD1_CLK_USDHC1_CLK		0x196
> +			MX8MM_IOMUXC_SD1_CMD_USDHC1_CMD		0x1d6
> +			MX8MM_IOMUXC_SD1_DATA0_USDHC1_DATA0	0x1d6
> +			MX8MM_IOMUXC_SD1_DATA1_USDHC1_DATA1	0x1d6
> +			MX8MM_IOMUXC_SD1_DATA2_USDHC1_DATA2	0x1d6
> +			MX8MM_IOMUXC_SD1_DATA3_USDHC1_DATA3	0x1d6
> +		>;
> +	};
> +
>  	pinctrl_usdhc2_gpio: usdhc2grpgpiogrp {
>  		fsl,pins = <
>  			MX8MM_IOMUXC_GPIO1_IO15_GPIO1_IO15	0x1c4
> -- 
> 2.37.1
> 
> 
>