linux-kernel - Re: [PATCH] arm64: dts: imx8mm-beacon: Fix WiFi Pinmuxing

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Date:   Tue, 5 Jan 2021 11:03:09 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Adam Ford <aford173@...il.com>
Cc:     linux-arm-kernel@...ts.infradead.org, aford@...conembedded.com,
        Rob Herring <robh+dt@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: imx8mm-beacon: Fix WiFi Pinmuxing

On Wed, Dec 02, 2020 at 07:59:50AM -0600, Adam Ford wrote:
> The WiFi chip is capable of communication at SDR104 speeds, and
> the pinmux was configured to support this, but the sdhc1 controller
> didn't properly reference the pinmux.  Enable 100Mhz and 200MHz pinmux
> as was originally intended.
> 
> Fixes: 593816fa2f35 ("arm64: dts: imx: Add Beacon i.MX8m-Mini development kit")

This looks more like an improvement than bug fix.

Shawn

> Signed-off-by: Adam Ford <aford173@...il.com>
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
> index 6de86a4f0ec4..90fd15e95798 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
> @@ -217,8 +217,10 @@
>  &usdhc1 {
>  	#address-cells = <1>;
>  	#size-cells = <0>;
> -	pinctrl-names = "default";
> +	pinctrl-names = "default", "state_100mhz", "state_200mhz";
>  	pinctrl-0 = <&pinctrl_usdhc1>;
> +	pinctrl-1 = <&pinctrl_usdhc1_100mhz>;
> +	pinctrl-2 = <&pinctrl_usdhc1_200mhz>;
>  	bus-width = <4>;
>  	non-removable;
>  	cap-power-off-card;
> -- 
> 2.17.1
>