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.montj...@gmail.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..17b2b92 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 {
+               allwinner,pins = "PD6";
+               allwinner,function = "gpio_out";
+               allwinner,drive = <SUN4I_PINCTRL_10_MA>;
+               allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
+               };
 };
 
 &usbphy {
        usb3_vbus-supply = <&reg_usb3_vbus>;
 };
+
+&mdio {
+       ext_rgmii_phy: ethernet-phy@1 {
+               reg = <0>;
+       };
+};
+
+&emac {
+       pinctrl-names = "default";
+       pinctrl-0 = <&emac_rgmii_pins>;
+       phy-supply = <&reg_gmac_3v3>;
+       phy-handle = <&ext_rgmii_phy>;
+       phy-mode = "rgmii";
+
+       allwinner,leds-active-low;
+       status = "okay";
+};
-- 
2.10.2

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