[PATCH] arm64: dts: meson-g12a-x96-max: Add Gigabit Ethernet Support

[Neil Armstrong]

Enable the network interface of the X96 Mac using an external
Realtek RTL8211F gigabit PHY, needing the same broken-eee properties
as the previous Amlogic SoC generations.

Signed-off-by: Neil Armstrong <narmstr...@baylibre.com>
---
 .../boot/dts/amlogic/meson-g12a-x96-max.dts   | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-g12a-x96-max.dts 
b/arch/arm64/boot/dts/amlogic/meson-g12a-x96-max.dts
index 5cdc263b03e6..5ca79109c250 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12a-x96-max.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-g12a-x96-max.dts
@@ -15,6 +15,7 @@
 
        aliases {
                serial0 = &uart_AO;
+               ethernet0 = &ethmac;
        };
        chosen {
                stdout-path = "serial0:115200n8";
@@ -150,6 +151,27 @@
        pinctrl-names = "default";
 };
 
+&ext_mdio {
+       external_phy: ethernet-phy@0 {
+               /* Realtek RTL8211F (0x001cc916) */
+               reg = <0>;
+               max-speed = <1000>;
+               eee-broken-1000t;
+       };
+};
+
+&ethmac {
+       pinctrl-0 = <&eth_rmii_pins>, <&eth_rgmii_pins>;
+       pinctrl-names = "default";
+       status = "okay";
+       phy-mode = "rgmii";
+       phy-handle = <&external_phy>;
+       amlogic,tx-delay-ns = <2>;
+       snps,reset-gpio = <&gpio GPIOZ_14 0>;
+       snps,reset-delays-us = <0 10000 1000000>;
+       snps,reset-active-low;
+};
+
 &uart_A {
        status = "okay";
        pinctrl-0 = <&uart_a_pins>, <&uart_a_cts_rts_pins>;
-- 
2.21.0