arm64: allwinner: h5: enable dwmac-sun8i for Orange Pi Prime

Add the required DT parts to enable Ethernet (dwmac-sun8i driver) on
the Orange Pi Prime board. It uses an external Realtek RTL8211E PHY
connected via RGMII to provide GbE network.

This includes the regulator (which is controlled by a GPIO pin) and
the actual Ethernet MAC node, referring the RGMII pins of the device.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-prime.dts b/arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-prime.dts
index 097c33386190..d906b302cbcd 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-prime.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-prime.dts
@@ -54,6 +54,7 @@
         compatible = "xunlong,orangepi-prime", "allwinner,sun50i-h5";
 
         aliases {
+                ethernet0 = &emac;
                 serial0 = &uart0;
         };
 
@@ -86,6 +87,16 @@
                 };
         };
 
+        reg_gmac_3v3: gmac-3v3 {
+                compatible = "regulator-fixed";
+                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>;
+        };
+
         reg_vcc3v3: vcc3v3 {
                 compatible = "regulator-fixed";
                 regulator-name = "vcc3v3";
@@ -133,12 +144,28 @@
         status = "okay";
 };
 
+&emac {
+        pinctrl-names = "default";
+        pinctrl-0 = <&emac_rgmii_pins>;
+        phy-supply = <&reg_gmac_3v3>;
+        phy-handle = <&ext_rgmii_phy>;
+        phy-mode = "rgmii";
+        status = "okay";
+};
+
 &ir {
         pinctrl-names = "default";
         pinctrl-0 = <&ir_pins_a>;
         status = "okay";
 };
 
+&mdio {
+        ext_rgmii_phy: ethernet-phy@1 {
+                compatible = "ethernet-phy-ieee802.3-c22";
+                reg = <1>;
+        };
+};
+
 &mmc0 {
         pinctrl-names = "default";
         pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin>;