netdev - Re: [PATCH v3 12/20] ARM: dts: sun8i: Enable dwmac-sun8i on the Orange Pi plus

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Date:   Mon, 3 Apr 2017 13:37:21 +0200
From:   Maxime Ripard <maxime.ripard@...e-electrons.com>
To:     Corentin Labbe <clabbe.montjoie@...il.com>
Cc:     robh+dt@...nel.org, mark.rutland@....com, wens@...e.org,
        linux@...linux.org.uk, catalin.marinas@....com,
        will.deacon@....com, peppe.cavallaro@...com,
        alexandre.torgue@...com, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v3 12/20] ARM: dts: sun8i: Enable dwmac-sun8i on the
 Orange Pi plus

On Mon, Apr 03, 2017 at 11:14:36AM +0200, Corentin Labbe wrote:
> The dwmac-sun8i hardware is present on the Orange PI plus.
> It uses an external PHY rtl8211e via RGMII.
> 
> This patch create the needed regulator, emac and phy nodes.
> 
> Signed-off-by: Corentin Labbe <clabbe.montjoie@...il.com>
> ---
>  arch/arm/boot/dts/sun8i-h3-orangepi-plus.dts | 36 ++++++++++++++++++++++++++++
>  1 file changed, 36 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/sun8i-h3-orangepi-plus.dts b/arch/arm/boot/dts/sun8i-h3-orangepi-plus.dts
> index 8c40ab7..6852006 100644
> --- a/arch/arm/boot/dts/sun8i-h3-orangepi-plus.dts
> +++ b/arch/arm/boot/dts/sun8i-h3-orangepi-plus.dts
> @@ -58,6 +58,18 @@
>  		enable-active-high;
>  		gpio = <&pio 6 11 GPIO_ACTIVE_HIGH>;
>  	};
> +
> +	reg_gmac_3v3: gmac-3v3 {
> +		compatible = "regulator-fixed";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&gmac_power_pin_orangepi>;
> +		regulator-name = "gmac-3v3";
> +		regulator-min-microvolt = <3300000>;
> +		regulator-max-microvolt = <3300000>;
> +		startup-delay-us = <100000>;
> +		enable-active-high;
> +		gpio = <&pio 3 6 GPIO_ACTIVE_HIGH>;
> +	};
>  };
>  
>  &ehci3 {
> @@ -86,8 +98,32 @@
>  		pins = "PG11";
>  		function = "gpio_out";
>  	};
> +
> +	gmac_power_pin_orangepi: gmac_power_pin@0 {
> +		pins = "PD6";
> +		function = "gpio_out";
> +		drive-strength = <10>;
> +	};

This is not needed, and will even harm the fixing of a bug that will
require to remove all the GPIO nodes. It works fine without it, please
remove it.

Thanks!
Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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