arm64: dts: rockchip: Add Xunlong OrangePi R1 Plus LTS

The OrangePi R1 Plus LTS is a minor variant of OrangePi R1 Plus with
the on-board NIC chip changed from rtl8211e to yt8531c, and otherwise
identical to OrangePi R1 Plus.

Signed-off-by: Tianling Shen <cnsztl@gmail.com>
Link: https://lore.kernel.org/r/20230325074022.9818-5-cnsztl@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

Author: 1715173329

arch/arm64/boot/dts/rockchip/Makefile

@@ -17,6 +17,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3328-evb.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3328-nanopi-r2c.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3328-nanopi-r2s.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3328-orangepi-r1-plus.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3328-orangepi-r1-plus-lts.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3328-rock64.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3328-rock-pi-e.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3328-roc-cc.dtb

arch/arm64/boot/dts/rockchip/rk3328-orangepi-r1-plus-lts.dts

@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright (c) 2016 Xunlong Software. Co., Ltd.
+ * (http://www.orangepi.org)
+ *
+ * Copyright (c) 2021-2023 Tianling Shen <cnsztl@gmail.com>
+ */
+
+/dts-v1/;
+#include "rk3328-orangepi-r1-plus.dts"
+
+/ {
+	model = "Xunlong Orange Pi R1 Plus LTS";
+	compatible = "xunlong,orangepi-r1-plus-lts", "rockchip,rk3328";
+};
+
+&gmac2io {
+	phy-handle = <&yt8531c>;
+	tx_delay = <0x19>;
+	rx_delay = <0x05>;
+
+	mdio {
+		/delete-node/ ethernet-phy@1;
+
+		yt8531c: ethernet-phy@0 {
+			compatible = "ethernet-phy-ieee802.3-c22";
+			reg = <0>;
+
+			motorcomm,clk-out-frequency-hz = <125000000>;
+			motorcomm,keep-pll-enabled;
+			motorcomm,auto-sleep-disabled;
+
+			pinctrl-0 = <&eth_phy_reset_pin>;
+			pinctrl-names = "default";
+			reset-assert-us = <15000>;
+			reset-deassert-us = <50000>;
+			reset-gpios = <&gpio1 RK_PC2 GPIO_ACTIVE_LOW>;
+		};
+	};
+};