From: Ricardo Pardini <ricardo@pardini.net>

The FriendlyElec NanoPC-T6 carries two on-board Realtek RTL8125 NICs
behind pcie2x1l0 and pcie2x1l2.

Describe the fixed function nodes and attach ethernet0/ethernet1
aliases, so that U-Boot's fdt_fixup_ethernet() can fill in the MAC
from its ethaddr/eth1addr env. The on-NIC EEPROMs on this board are
not pre-programmed with a unique MAC, so this gives a stable MAC
across boots that both U-Boot and the kernel agree on.

Signed-off-by: Ricardo Pardini <ricardo@pardini.net>
---
 arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dtsi | 30 ++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dtsi b/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dtsi
index cfdb5c13f8606..550358a756618 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dtsi
@@ -20,6 +20,8 @@ / {
 	compatible = "friendlyarm,nanopc-t6", "rockchip,rk3588";
 
 	aliases {
+		ethernet0 = &rtl_eth0;
+		ethernet1 = &rtl_eth1;
 		mmc0 = &sdhci;
 		mmc1 = &sdmmc;
 	};
@@ -644,6 +646,20 @@ &pcie2x1l0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pcie2_0_rst>;
 	status = "okay";
+
+	pcie@0,0 {
+		reg = <0x200000 0 0 0 0>;
+		#address-cells = <3>;
+		#size-cells = <2>;
+		ranges;
+		device_type = "pci";
+		bus-range = <0x21 0x2f>;
+
+		rtl_eth0: ethernet@0,0 {
+			compatible = "pci10ec,8125";
+			reg = <0x210000 0 0 0 0>;
+		};
+	};
 };
 
 &pcie2x1l1 {
@@ -660,6 +676,20 @@ &pcie2x1l2 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pcie2_2_rst>;
 	status = "okay";
+
+	pcie@0,0 {
+		reg = <0x400000 0 0 0 0>;
+		#address-cells = <3>;
+		#size-cells = <2>;
+		ranges;
+		device_type = "pci";
+		bus-range = <0x41 0x4f>;
+
+		rtl_eth1: ethernet@0,0 {
+			compatible = "pci10ec,8125";
+			reg = <0x410000 0 0 0 0>;
+		};
+	};
 };
 
 &pcie30phy {

-- 
2.55.0