--- /dev/null
+//SPDX-License-Identifier: GPL-2.0+
+
+/dts-v1/;
+
+#include "aspeed-g4.dtsi"
+#include <dt-bindings/gpio/aspeed-gpio.h>
+
+/ {
+ model = "Olympus BMC";
+ compatible = "microsoft,olympus-bmc", "aspeed,ast2400";
+
+ chosen {
+ stdout-path = &uart5;
+ bootargs = "console=ttyS4,115200 earlyprintk";
+ };
+
+ memory@40000000 {
+ reg = <0x40000000 0x20000000>;
+ };
+
+ reserved-memory {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ vga_memory: framebuffer@5f000000 {
+ no-map;
+ reg = <0x5f000000 0x01000000>; /* 16M */
+ };
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ bmc_heartbeat {
+ gpios = <&gpio ASPEED_GPIO(B, 0) GPIO_ACTIVE_LOW>;
+ };
+
+ power_green {
+ gpios = <&gpio ASPEED_GPIO(U, 2) GPIO_ACTIVE_HIGH>;
+ };
+
+ power_amber {
+ gpios = <&gpio ASPEED_GPIO(U, 3) GPIO_ACTIVE_HIGH>;
+ };
+
+ identify {
+ gpios = <&gpio ASPEED_GPIO(Q, 5) GPIO_ACTIVE_LOW>;
+ };
+
+ fault {
+ gpios = <&gpio ASPEED_GPIO(A, 1) 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 {
+ 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>;
+};
+
+&fmc {
+ status = "okay";
+
+ flash@0 {
+ status = "okay";
+ m25p,fast-read;
+ label = "bmc";
+#include "openbmc-flash-layout.dtsi"
+ };
+};
+
+&spi {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_spi1_default>;
+
+ flash@0 {
+ status = "okay";
+ m25p,fast-read;
+ label = "pnor";
+ };
+};
+
+&uart5 {
+ status = "okay";
+};
+
+&mac0 {
+ status = "okay";
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_rgmii1_default &pinctrl_mdio1_default>;
+};
+
+&i2c0 {
+ status = "okay";
+};
+
+&i2c1 {
+ status = "okay";
+
+ tmp421@4c {
+ compatible = "ti,tmp421";
+ reg = <0x4c>;
+ };
+};
+
+&i2c2 {
+ status = "okay";
+};
+
+&i2c3 {
+ status = "okay";
+};
+
+&i2c4 {
+ status = "okay";
+ clock-frequency = <100000>;
+};
+
+&i2c5 {
+ status = "okay";
+};
+
+&i2c6 {
+ status = "okay";
+
+ tmp421@4c {
+ compatible = "ti,tmp421";
+ reg = <0x4c>;
+ };
+};
+
+&i2c7 {
+ status = "okay";
+};
+
+&vuart {
+ status = "okay";
+};
+
+&wdt2 {
+ status = "okay";
+};
+
+&lpc_ctrl {
+ status = "okay";
+};
+
+&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>;
+
+ fan@0 {
+ reg = <0x00>;
+ aspeed,fan-tach-ch = /bits/ 8 <0x00>;
+ };
+
+ fan@1 {
+ reg = <0x01>;
+ aspeed,fan-tach-ch = /bits/ 8 <0x01>;
+ };
+
+ fan@2 {
+ reg = <0x02>;
+ aspeed,fan-tach-ch = /bits/ 8 <0x02>;
+ };
+
+ fan@3 {
+ reg = <0x03>;
+ aspeed,fan-tach-ch = /bits/ 8 <0x03>;
+ };
+
+ fan@4 {
+ reg = <0x04>;
+ aspeed,fan-tach-ch = /bits/ 8 <0x04>;
+ };
+
+ fan@5 {
+ reg = <0x05>;
+ aspeed,fan-tach-ch = /bits/ 8 <0x05>;
+ };
+
+};