linux-kernel - Re: [PATCH] arm64: dts: allwinner: orange-pi-3: Enable WiFi

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Message-ID: <20190823100807.22heh2gahi7owo4e@flea>
Date:   Fri, 23 Aug 2019 12:08:07 +0200
From:   Maxime Ripard <mripard@...nel.org>
To:     megous@...ous.com
Cc:     Chen-Yu Tsai <wens@...e.org>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: allwinner: orange-pi-3: Enable WiFi

Hi,

On Fri, Aug 23, 2019 at 11:42:28AM +0200, megous@...ous.com wrote:
> From: Ondrej Jirman <megous@...ous.com>
>
> Orange Pi 3 has AP6256 WiFi/BT module. WiFi part of the module is called
> bcm43356 and can be used with the brcmfmac driver. The module is powered by
> the two always on regulators (not AXP805).
>
> WiFi uses a PG port with 1.8V voltage level signals. SoC needs to be
> configured so that it sets up an 1.8V input bias on this port. This is done
> by the pio driver by reading the vcc-pg-supply voltage.
>
> You'll need a fw_bcm43456c5_ag.bin firmware file and nvram.txt
> configuration that can be found in the Xulongs's repository for H6:
>
> https://github.com/orangepi-xunlong/OrangePiH6_external/tree/master/ap6256
>
> Mainline brcmfmac driver expects the firmware and nvram at the following
> paths relative to the firmware directory:
>
>   brcm/brcmfmac43456-sdio.bin
>   brcm/brcmfmac43456-sdio.txt
>
> Signed-off-by: Ondrej Jirman <megous@...ous.com>
> ---
>
> Since RTC patches for H6 were merged, this can now go in too, if it looks ok.
>
> Other patches for this WiFi chip support were merged in previous cycles,
> so this just needs enabling in DTS now.
>
> Sorry for the links in the commit log, but this information is useful,
> even if the link itself goes bad. Any pointer what to google for
> (file names, tree name) is great for anyone searching in the future.

I understand, but this should (also?) be in the wiki. Please add it
there too.

> Please take a look.
>
> Thank you,
> 	Ondrej
>
>  .../dts/allwinner/sun50i-h6-orangepi-3.dts    | 48 +++++++++++++++++++
>  1 file changed, 48 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
> index eda9d5f640b9..49d954369087 100644
> --- a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
> @@ -56,6 +56,34 @@
>  		regulator-max-microvolt = <5000000>;
>  		regulator-always-on;
>  	};
> +
> +	reg_vcc33_wifi: vcc33-wifi {
> +		/* Always on 3.3V regulator for WiFi and BT */
> +		compatible = "regulator-fixed";
> +		regulator-name = "vcc33-wifi";
> +		regulator-min-microvolt = <3300000>;
> +		regulator-max-microvolt = <3300000>;
> +		regulator-always-on;
> +		vin-supply = <&reg_vcc5v>;
> +	};
> +
> +	reg_vcc_wifi_io: vcc-wifi-io {
> +		/* Always on 1.8V/300mA regulator for WiFi and BT IO */
> +		compatible = "regulator-fixed";
> +		regulator-name = "vcc-wifi-io";
> +		regulator-min-microvolt = <1800000>;
> +		regulator-max-microvolt = <1800000>;
> +		regulator-always-on;
> +		vin-supply = <&reg_vcc33_wifi>;
> +	};
> +
> +	wifi_pwrseq: wifi_pwrseq {
> +		compatible = "mmc-pwrseq-simple";
> +		clocks = <&rtc 1>;
> +		clock-names = "ext_clock";
> +		reset-gpios = <&r_pio 1 3 GPIO_ACTIVE_LOW>; /* PM3 */
> +		post-power-on-delay-ms = <200>;
> +	};
>  };
>
>  &cpu0 {
> @@ -91,6 +119,25 @@
>  	status = "okay";
>  };
>
> +&mmc1 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&mmc1_pins>;

This is the default already. I've removed it and applied.

Maxime

--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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