diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 0858193..f44a6b3 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1259,6 +1259,7 @@ dtb-$(CONFIG_ARCH_ASPEED) += \
 	aspeed-bmc-intel-s2600wf.dtb \
 	aspeed-bmc-inspur-fp5280g2.dtb \
 	aspeed-bmc-lenovo-hr630.dtb \
+	aspeed-bmc-lenovo-hr855xg2.dtb \
 	aspeed-bmc-microsoft-olympus.dtb \
 	aspeed-bmc-opp-lanyang.dtb \
 	aspeed-bmc-opp-palmetto.dtb \
diff --git a/arch/arm/boot/dts/aspeed-bmc-lenovo-hr855xg2.dts b/arch/arm/boot/dts/aspeed-bmc-lenovo-hr855xg2.dts
new file mode 100644
index 0000000..d8dbf3a
--- /dev/null
+++ b/arch/arm/boot/dts/aspeed-bmc-lenovo-hr855xg2.dts
@@ -0,0 +1,687 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Device Tree file for Lenovo Hr855xg2 platform
+ *
+ * Copyright (C) 2019-present Lenovo
+ */
+
+/dts-v1/;
+
+#include "aspeed-g5.dtsi"
+#include <dt-bindings/gpio/aspeed-gpio.h>
+
+/ {
+	model = "HR855XG2 BMC";
+	compatible = "lenovo,hr855xg2-bmc", "aspeed,ast2500";
+
+	aliases {
+		i2c14 = &i2c_riser1;
+		i2c15 = &i2c_riser2;
+		i2c16 = &i2c_riser3;
+		i2c17 = &i2c_M2;
+		i2c18 = &channel_0;
+		i2c19 = &channel_1;
+		i2c20 = &channel_2;
+		i2c21 = &channel_3;
+	};
+
+	chosen {
+		stdout-path = &uart5;
+		bootargs = "console=tty0 console=ttyS4,115200 earlyprintk";
+	};
+
+	memory@80000000 {
+		device_type = "memory";
+		reg = <0x80000000 0x20000000>;
+	};
+
+	reserved-memory {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		flash_memory: region@98000000 {
+			no-map;
+			reg = <0x98000000 0x00100000>; /* 1M */
+		};
+
+		gfx_memory: framebuffer {
+			size = <0x01000000>;
+			alignment = <0x01000000>;
+			compatible = "shared-dma-pool";
+			reusable;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		heartbeat {
+			gpios = <&gpio ASPEED_GPIO(C, 7) GPIO_ACTIVE_LOW>;
+		};
+
+		fault {
+			gpios = <&gpio ASPEED_GPIO(G, 3) GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	iio-hwmon {
+		compatible = "iio-hwmon";
+		io-channels = <&adc 0>, <&adc 1>, <&adc 2>, <&adc 3>,
+		<&adc 4>, <&adc 5>, <&adc 6>, <&adc 7>,
+		<&adc 8>, <&adc 9>, <&adc 10>,<&adc 11>,
+		<&adc 12>,<&adc 13>,<&adc 14>;
+	};
+
+	iio-hwmon-battery {
+		compatible = "iio-hwmon";
+		io-channels = <&adc 15>;
+	};
+
+};
+
+&fmc {
+	status = "okay";
+	flash@0 {
+		status = "okay";
+		m25p,fast-read;
+		label = "bmc";
+		spi-max-frequency = <50000000>;
+#include "openbmc-flash-layout.dtsi"
+	};
+};
+
+&lpc_ctrl {
+	status = "okay";
+	memory-region = <&flash_memory>;
+	flash = <&spi1>;
+};
+
+&lpc_snoop {
+	status = "okay";
+	snoop-ports = <0x80>;
+};
+
+&uart1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_txd1_default
+			&pinctrl_rxd1_default>;
+};
+
+&uart2 {
+	/* Rear RS-232 connector */
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_txd2_default
+			&pinctrl_rxd2_default
+			&pinctrl_nrts2_default
+			&pinctrl_ndtr2_default
+			&pinctrl_ndsr2_default
+			&pinctrl_ncts2_default
+			&pinctrl_ndcd2_default
+			&pinctrl_nri2_default>;
+};
+
+&uart3 {
+	status = "okay";
+};
+
+&uart5 {
+	status = "okay";
+};
+
+&ibt {
+	status = "okay";
+};
+
+&mac0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_rmii1_default>;
+	use-ncsi;
+};
+
+&mac1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_rgmii2_default &pinctrl_mdio2_default>;
+};
+
+&adc{
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_adc0_default
+			&pinctrl_adc1_default
+			&pinctrl_adc2_default
+			&pinctrl_adc3_default
+			&pinctrl_adc4_default
+			&pinctrl_adc5_default
+			&pinctrl_adc6_default
+			&pinctrl_adc7_default
+			&pinctrl_adc8_default
+			&pinctrl_adc9_default
+			&pinctrl_adc10_default
+			&pinctrl_adc11_default
+			&pinctrl_adc12_default
+			&pinctrl_adc13_default
+			&pinctrl_adc14_default
+			&pinctrl_adc15_default>;
+};
+
+&peci0 {
+	status = "okay";
+
+	peci-client@30 {
+		compatible = "intel,peci-client";
+		reg = <0x30>;
+	};
+
+	peci-client@31 {
+		compatible = "intel,peci-client";
+		reg = <0x31>;
+	};
+
+	peci-client@32 {
+		compatible = "intel,peci-client";
+		reg = <0x32>;
+	};
+
+	peci-client@33 {
+		compatible = "intel,peci-client";
+		reg = <0x33>;
+	};
+};
+
+&i2c0 {
+	status = "okay";
+
+	i2c-switch@70 {
+		compatible = "nxp,pca9545";
+		reg = <0x70>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		i2c_riser1: i2c@0 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0>;
+		};
+
+		i2c_riser2: i2c@1 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <1>;
+		};
+
+		i2c_riser3: i2c@2 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <2>;
+		};
+
+		i2c_M2: i2c@3 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <3>;
+		};
+	};
+};
+
+&i2c1 {
+	status = "okay";
+	bus-frequency = <90000>;
+	HotSwap@10 {
+		compatible = "adm1272";
+		reg = <0x10>;
+	};
+
+	VR@45 {
+		compatible = "pmbus";
+		reg = <0x45>;
+	};
+};
+
+&i2c2 {
+	status = "okay";
+};
+
+&i2c3 {
+	status = "okay";
+	i2c-switch@70 {
+		compatible = "nxp,pca9546";
+		reg = <0x70>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		channel_0: i2c@0 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0>;
+		};
+
+		channel_1: i2c@1 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <1>;
+		};
+
+		channel_2: i2c@2 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <2>;
+		};
+
+		channel_3: i2c@3 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <3>;
+		};
+	};
+};
+
+&i2c4 {
+	status = "okay";
+};
+
+&i2c5 {
+	status = "okay";
+};
+
+&i2c6 {
+	status = "okay";
+	/* temp1 */
+	tmp75@49 {
+		compatible = "national,lm75";
+		reg = <0x49>;
+	};
+
+	/* temp2 */
+	tmp75@4d {
+		compatible = "national,lm75";
+		reg = <0x4d>;
+	};
+
+	eeprom@54 {
+		compatible = "atmel,24c256";
+		reg = <0x54>;
+		pagesize = <16>;
+	};
+};
+
+&i2c7 {
+	status = "okay";
+};
+
+&i2c8 {
+	status = "okay";
+};
+
+&i2c9 {
+	status = "okay";
+};
+
+&i2c10 {
+	status = "okay";
+};
+
+&i2c11 {
+	status = "okay";
+};
+
+&i2c13 {
+	status = "okay";
+};
+
+&ehci1 {
+	status = "okay";
+};
+
+&uhci {
+	status = "okay";
+};
+
+&gfx {
+	status = "okay";
+	memory-region = <&gfx_memory>;
+};
+
+&pwm_tacho {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_pwm0_default
+	&pinctrl_pwm1_default
+	&pinctrl_pwm2_default
+	&pinctrl_pwm3_default
+	&pinctrl_pwm4_default
+	&pinctrl_pwm5_default
+	&pinctrl_pwm6_default
+	&pinctrl_pwm7_default>;
+
+	fan@0 {
+		reg = <0x00>;
+		aspeed,fan-tach-ch = /bits/ 8 <0x00>;
+	};
+
+	fan@1 {
+		reg = <0x00>;
+		aspeed,fan-tach-ch = /bits/ 8 <0x01>;
+	};
+
+	fan@2 {
+		reg = <0x01>;
+		aspeed,fan-tach-ch = /bits/ 8 <0x02>;
+	};
+
+	fan@3 {
+		reg = <0x01>;
+		aspeed,fan-tach-ch = /bits/ 8 <0x03>;
+	};
+
+	fan@4 {
+		reg = <0x02>;
+		aspeed,fan-tach-ch = /bits/ 8 <0x04>;
+	};
+
+	fan@5 {
+		reg = <0x02>;
+		aspeed,fan-tach-ch = /bits/ 8 <0x05>;
+	};
+
+	fan@6 {
+		reg = <0x03>;
+		aspeed,fan-tach-ch = /bits/ 8 <0x06>;
+	};
+
+	fan@7 {
+		reg = <0x03>;
+		aspeed,fan-tach-ch = /bits/ 8 <0x07>;
+	};
+
+	fan@8 {
+		reg = <0x04>;
+		aspeed,fan-tach-ch = /bits/ 8 <0x08>;
+	};
+
+	fan@9 {
+		reg = <0x04>;
+		aspeed,fan-tach-ch = /bits/ 8 <0x09>;
+	};
+
+	fan@10 {
+		reg = <0x05>;
+		aspeed,fan-tach-ch = /bits/ 8 <0x0a>;
+	};
+
+	fan@11 {
+		reg = <0x05>;
+		aspeed,fan-tach-ch = /bits/ 8 <0x0b>;
+	};
+
+	fan@12 {
+		reg = <0x06>;
+		aspeed,fan-tach-ch = /bits/ 8 <0x0c>;
+	};
+
+	fan@13 {
+		reg = <0x06>;
+		aspeed,fan-tach-ch = /bits/ 8 <0x0d>;
+	};
+
+	fan@14 {
+		reg = <0x07>;
+		aspeed,fan-tach-ch = /bits/ 8 <0x0e>;
+	};
+
+	fan@15 {
+		reg = <0x07>;
+		aspeed,fan-tach-ch = /bits/ 8 <0x0f>;
+	};
+
+	fan@16 {
+		reg = <0x07>;
+		aspeed,fan-tach-ch = /bits/ 8 <0x0f>;
+	};
+};
+
+&gpio {
+
+	pin_gpio_a1 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(A, 1) GPIO_ACTIVE_LOW>;
+		output-high;
+		line-name = "BMC_EMMC_RST_N";
+	};
+
+	pin_gpio_a3 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(A, 3) GPIO_ACTIVE_LOW>;
+		output-high;
+		line-name = "PCH_PWROK_BMC_FPGA";
+	};
+
+	pin_gpio_b5 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(B, 5) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "IRQ_BMC_PCH_SMI_LPC_N";
+	};
+
+	pin_gpio_b7 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(B, 7) GPIO_ACTIVE_LOW>;
+		output-low;
+		line-name = "CPU_SM_WP";
+	};
+
+	pin_gpio_e0 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(E, 0) GPIO_ACTIVE_HIGH>;
+		input;
+		line-name = "PDB_PSU_SEL";
+	};
+
+	pin_gpio_e2 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(E, 2) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "LOCATOR_LED_N";
+	};
+
+	pin_gpio_e5 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(E, 5) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "FM_BMC_DBP_PRESENT_R1_N";
+	};
+
+	pin_gpio_e6 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(E, 6) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "BMC_ME_SECURITY_OVERRIDE_N";
+	};
+
+	pin_gpio_f0 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(F, 0) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "IRQ_BMC_PCH_NMI_R";
+	};
+
+	pin_gpio_f1 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(F, 1) GPIO_ACTIVE_HIGH>;
+		input;
+		line-name = "CPU2_PROCDIS_BMC_N";
+	};
+
+	pin_gpio_f2 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(F, 2) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "RM_THROTTLE_EN_N";
+	};
+
+	pin_gpio_f3 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(F, 3) GPIO_ACTIVE_HIGH>;
+		output-low;
+		line-name = "FM_PMBUS_ALERT_B_EN";
+	};
+
+	pin_gpio_f4 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(F, 4) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "BMC_FORCE_NM_THROTTLE_N";
+	};
+
+	pin_gpio_f6 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(F, 6) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "FM_BMC_CPU_PWR_DEBUG_N";
+	};
+
+	pin_gpio_g7 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(G, 7) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "BMC_PCIE_I2C_MUX_RST_N";
+	};
+
+	pin_gpio_h6 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(H, 6) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "FM_BMC_DBP_PRESENT_R2_N";
+	};
+
+	pin_gpio_i3 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(I, 3) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "SPI_BMC_BIOS_WP_N";
+	};
+
+	pin_gpio_j1 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(J, 1) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "BMC_USB_SEL";
+	};
+
+	pin_gpio_j2 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(J, 2) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "PDB_SMB_RST_N";
+	};
+
+	pin_gpio_j3 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(J, 3) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "SPI_BMC_BIOS_HOLD_N";
+	};
+
+	pin_gpio_l0 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(L, 0) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "PDB_FAN_TACH_SEL";
+	};
+
+	pin_gpio_l1 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(L, 1) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "SYS_RESET_BMC_FPGA_N";
+	};
+
+	pin_gpio_l4 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(L, 4) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "FM_EFUSE_FAN_G1_EN";
+	};
+
+	pin_gpio_l5 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(L, 5) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "FM_EFUSE_FAN_G2_EN";
+	};
+
+	pin_gpio_r6 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(R, 6) GPIO_ACTIVE_HIGH>;
+		input;
+		line-name = "CPU3_PROCDIS_BMC_N";
+	};
+
+	pin_gpio_r7 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(R, 7) GPIO_ACTIVE_HIGH>;
+		input;
+		line-name = "CPU4_PROCDIS_BMC_N";
+	};
+
+	pin_gpio_s1 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(S, 1) GPIO_ACTIVE_HIGH>;
+		output-low;
+		line-name = "DBP_SYSPWROK_BMC";
+	};
+
+	pin_gpio_s2 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(S, 2) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "PCH_RST_RSMRST_N";
+	};
+
+	pin_gpio_s6 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(S, 6) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "BMC_HW_STRAP_5";
+	};
+
+	pin_gpio_z3 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(Z, 3) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "FM_BMC_PCH_SCI_LPC_N";
+	};
+
+	pin_gpio_aa0 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(AA, 0) GPIO_ACTIVE_HIGH>;
+		output-low;
+		line-name = "FW_PSU_ALERT_EN_N";
+	};
+
+	pin_gpio_aa4 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(AA, 4) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "DBP_CPU_PREQ_N";
+	};
+
+	pin_gpio_ab3 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(AB, 3) GPIO_ACTIVE_HIGH>;
+		output-low;
+		line-name = "BMC_WDTRST";
+	};
+
+	pin_gpio_ac6 {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(AC, 6) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "ESPI_BMC_ALERT_N";
+	};
+
+};
