net: Add EMAC driver for H3/A83T/A64 SoCs.

This patch add EMAC driver support for H3/A83T/A64 SoCs.
Tested on Pine64(A64-External PHY) and Orangepipc(H3-Internal PHY).

BIG Thanks to Andre for providing some of the DT code.

Signed-off-by: Amit Singh Tomar <amittomer25@gmail.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
diff --git a/arch/arm/dts/sun8i-h3.dtsi b/arch/arm/dts/sun8i-h3.dtsi
index c2f63c5..6ca5e34 100644
--- a/arch/arm/dts/sun8i-h3.dtsi
+++ b/arch/arm/dts/sun8i-h3.dtsi
@@ -501,6 +501,17 @@
 			interrupt-controller;
 			#interrupt-cells = <3>;
 
+			rgmii_pins: rgmii_pins {
+				allwinner,pins = "PD0", "PD1", "PD2", "PD3",
+						 "PD4", "PD5", "PD7",
+						 "PD8", "PD9", "PD10",
+						 "PD12", "PD13", "PD15",
+						 "PD16", "PD17";
+				allwinner,function = "emac";
+				allwinner,drive = <SUN4I_PINCTRL_40_MA>;
+				allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
+			};
+
 			uart0_pins_a: uart0@0 {
 				allwinner,pins = "PA4", "PA5";
 				allwinner,function = "uart0";
@@ -616,6 +627,20 @@
 			status = "disabled";
 		};
 
+		emac: ethernet@01c30000 {
+			compatible = "allwinner,sun8i-h3-emac";
+			reg = <0x01c30000 0x2000>, <0x01c00030 0x4>;
+			reg-names = "emac", "syscon";
+			interrupts = <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>;
+			resets = <&ahb_rst 17>, <&ahb_rst 66>;
+			reset-names = "ahb", "ephy";
+			clocks = <&bus_gates 17>, <&bus_gates 128>;
+			clock-names = "ahb", "ephy";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
 		gic: interrupt-controller@01c81000 {
 			compatible = "arm,cortex-a7-gic", "arm,cortex-a15-gic";
 			reg = <0x01c81000 0x1000>,