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diff --git a/arch/arm64/boot/dts/cavium/thunder2-99xx.dtsi b/arch/arm64/boot/dts/cavium/thunder2-99xx.dtsi
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+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * dtsi file for Cavium ThunderX2 CN99XX processor
+ *
+ * Copyright (c) 2017 Cavium Inc.
+ * Copyright (c) 2013-2016 Broadcom
+ * Author: Zi Shen Lim <zlim@broadcom.com>
+ */
+
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+ model = "Cavium ThunderX2 CN99XX";
+ compatible = "cavium,thunderx2-cn9900", "brcm,vulcan-soc";
+ interrupt-parent = <&gic>;
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ /* just 4 cpus now, 128 needed in full config */
+ cpus {
+ #address-cells = <0x2>;
+ #size-cells = <0x0>;
+
+ cpu@0 {
+ device_type = "cpu";
+ compatible = "cavium,thunder2", "brcm,vulcan";
+ reg = <0x0 0x0>;
+ enable-method = "psci";
+ };
+
+ cpu@1 {
+ device_type = "cpu";
+ compatible = "cavium,thunder2", "brcm,vulcan";
+ reg = <0x0 0x1>;
+ enable-method = "psci";
+ };
+
+ cpu@2 {
+ device_type = "cpu";
+ compatible = "cavium,thunder2", "brcm,vulcan";
+ reg = <0x0 0x2>;
+ enable-method = "psci";
+ };
+
+ cpu@3 {
+ device_type = "cpu";
+ compatible = "cavium,thunder2", "brcm,vulcan";
+ reg = <0x0 0x3>;
+ enable-method = "psci";
+ };
+ };
+
+ psci {
+ compatible = "arm,psci-0.2";
+ method = "smc";
+ };
+
+ gic: interrupt-controller@400080000 {
+ compatible = "arm,gic-v3";
+ #interrupt-cells = <3>;
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+ interrupt-controller;
+ #redistributor-regions = <1>;
+ reg = <0x04 0x00080000 0x0 0x20000>, /* GICD */
+ <0x04 0x01000000 0x0 0x1000000>; /* GICR */
+ interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
+
+ gicits: gic-its@40010000 {
+ compatible = "arm,gic-v3-its";
+ msi-controller;
+ reg = <0x04 0x00100000 0x0 0x20000>; /* GIC ITS */
+ };
+ };
+
+ timer {
+ compatible = "arm,armv8-timer";
+ interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_PPI 14 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_PPI 11 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_PPI 10 IRQ_TYPE_LEVEL_HIGH>;
+ };
+
+ pmu {
+ compatible = "brcm,vulcan-pmu", "arm,armv8-pmuv3";
+ interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_HIGH>; /* PMU overflow */
+ };
+
+ clk125mhz: uart_clk125mhz {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <125000000>;
+ clock-output-names = "clk125mhz";
+ };
+
+ pcie@30000000 {
+ compatible = "pci-host-ecam-generic";
+ device_type = "pci";
+ #interrupt-cells = <1>;
+ #address-cells = <3>;
+ #size-cells = <2>;
+
+ /* ECAM at 0x3000_0000 - 0x4000_0000 */
+ reg = <0x0 0x30000000 0x0 0x10000000>;
+ reg-names = "PCI ECAM";
+
+ /*
+ * PCI ranges:
+ * IO no supported
+ * MEM 0x4000_0000 - 0x6000_0000
+ * MEM64 pref 0x40_0000_0000 - 0x60_0000_0000
+ */
+ ranges =
+ <0x02000000 0 0x40000000 0 0x40000000 0 0x20000000
+ 0x43000000 0x40 0x00000000 0x40 0x00000000 0x20 0x00000000>;
+ bus-range = <0 0xff>;
+ interrupt-map-mask = <0 0 0 7>;
+ interrupt-map =
+ /* addr pin ic icaddr icintr */
+ <0 0 0 1 &gic 0 0 GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH
+ 0 0 0 2 &gic 0 0 GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH
+ 0 0 0 3 &gic 0 0 GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH
+ 0 0 0 4 &gic 0 0 GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
+ msi-parent = <&gicits>;
+ dma-coherent;
+ };
+
+ soc {
+ compatible = "simple-bus";
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ uart0: serial@402020000 {
+ compatible = "arm,pl011", "arm,primecell";
+ reg = <0x04 0x02020000 0x0 0x1000>;
+ interrupt-parent = <&gic>;
+ interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk125mhz>;
+ clock-names = "apb_pclk";
+ };
+ };
+
+};