Revision 2 of the qcs8300-ride board uses a different PHY for the two
ethernet ports and supports 2.5G speed. Create a new file for the board
reflecting the changes.

Signed-off-by: Yijie Yang <quic_yijiyang@quicinc.com>
---
 arch/arm64/boot/dts/qcom/Makefile            |  1 +
 arch/arm64/boot/dts/qcom/qcs8300-ride-r2.dts | 33 ++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index b69be54829ea..65c69f30e0b5 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -112,6 +112,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= qcs404-evb-1000.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= qcs404-evb-4000.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= qcs6490-rb3gen2.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= qcs8300-ride.dtb
+dtb-$(CONFIG_ARCH_QCOM)	+= qcs8300-ride-r2.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= qcs8550-aim300-aiot.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= qdu1000-idp.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= qrb2210-rb1.dtb
diff --git a/arch/arm64/boot/dts/qcom/qcs8300-ride-r2.dts b/arch/arm64/boot/dts/qcom/qcs8300-ride-r2.dts
new file mode 100644
index 000000000000..e8bf4668b70e
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/qcs8300-ride-r2.dts
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Copyright (c) 2024 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+/dts-v1/;
+
+#include "qcs8300-ride.dtsi"
+/ {
+	model = "Qualcomm Technologies, Inc. QCS8300 Ride Rev2";
+	compatible = "qcom,qcs8300-ride-r2", "qcom,qcs8300";
+	chassis-type = "embedded";
+};
+
+&ethernet0 {
+	phy-mode = "2500base-x";
+};
+
+&mdio {
+	compatible = "snps,dwmac-mdio";
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	sgmii_phy0: phy@8 {
+		compatible = "ethernet-phy-id31c3.1c33";
+		reg = <0x8>;
+		device_type = "ethernet-phy";
+		interrupts-extended = <&tlmm 4 IRQ_TYPE_EDGE_FALLING>;
+		reset-gpios = <&tlmm 31 GPIO_ACTIVE_LOW>;
+		reset-assert-us = <11000>;
+		reset-deassert-us = <70000>;
+	};
+};

-- 
2.34.1