linux-kernel - Re: [PATCH v2 1/2] ARM: dts: sun8i: h3: Enable AP6212 WiFi on mmc1 on Nanopi M1 Plus

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Date:   Sat, 02 Sep 2017 15:01:57 +0800
From:   icenowy@...c.io
To:     Philipp Rossak <embed3d@...il.com>
Cc:     robh+dt@...nel.org, mark.rutland@....com, linux@...linux.org.uk,
        maxime.ripard@...e-electrons.com, wens@...e.org,
        devicetree@...r.kernel.org, linux-sunxi@...glegroups.com,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 1/2] ARM: dts: sun8i: h3: Enable AP6212 WiFi on mmc1 on
 Nanopi M1 Plus

在 2017-09-02 00:30，Philipp Rossak 写道：
> From: Philipp Rossak <embed3d@...il.com>
> 
> The WiFi side of the AP6212 WiFi/BT combo module is connected to
> mmc1. There are also GPIOs for enable and interrupts.
> 
> Enable WiFi on this board by enabling mmc1 and adding the power
> sequencing clocks and GPIO, as well as the chip's interrupt line.
> 
> Signed-off-by: Philipp Rossak <embed3d@...il.com>
> ---
>  arch/arm/boot/dts/sun8i-h3-nanopi-m1-plus.dts | 25 
> +++++++++++++++++++++++++
>  1 file changed, 25 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/sun8i-h3-nanopi-m1-plus.dts
> b/arch/arm/boot/dts/sun8i-h3-nanopi-m1-plus.dts
> index 6256f55..7d18c35 100644
> --- a/arch/arm/boot/dts/sun8i-h3-nanopi-m1-plus.dts
> +++ b/arch/arm/boot/dts/sun8i-h3-nanopi-m1-plus.dts
> @@ -48,6 +48,13 @@
> 
>  	aliases {
>  		serial1 = &uart3;
> +		ethernet1 = &sdio_wifi;

When the Wi-Fi module itself has fixed MAC address, there's
no need for such an alias.

> +	};
> +
> +	wifi_pwrseq: wifi_pwrseq {
> +		compatible = "mmc-pwrseq-simple";
> +		pinctrl-names = "default";
> +		reset-gpios = <&r_pio 0 7 GPIO_ACTIVE_LOW>; /* PL7 */
>  	};
>  };
> 
> @@ -65,6 +72,24 @@
>  	status = "okay";
>  };
> 
> +&mmc1 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&mmc1_pins_a>;
> +	vmmc-supply = <&reg_vcc3v3>;
> +	mmc-pwrseq = <&wifi_pwrseq>;
> +	bus-width = <4>;
> +	non-removable;
> +	status = "okay";
> +
> +	sdio_wifi: sdio_wifi@1 {
> +		reg = <1>;
> +		compatible = "brcm,bcm4329-fmac";
> +		interrupt-parent = <&pio>;
> +		interrupts = <6 10 IRQ_TYPE_LEVEL_LOW>; /* PG10 / EINT10 */
> +		interrupt-names = "host-wake";
> +	};
> +};
> +
>  &ohci1 {
>  	status = "okay";
>  };