--- /dev/null
+// SPDX-License-Identifier: GPL-2.0+
+/dts-v1/;
+
+#include "aspeed-g4.dtsi"
+#include <dt-bindings/gpio/aspeed-gpio.h>
+
+#define EFUSE_OUTPUT(n) \
+ efuse##n { \
+ compatible = "regulator-output"; \
+ vout-supply = <&efuse##n>; \
+ }
+
+#define __stringify(x) #x
+
+#define EFUSE(hexaddr, num) \
+ efuse@##hexaddr { \
+ compatible = "lm25066"; \
+ reg = <0x##hexaddr>; \
+ shunt-resistor-micro-ohms = <675>; \
+ regulators { \
+ efuse##num: vout0 { \
+ regulator-name = __stringify(efuse##num##-reg); \
+ }; \
+ }; \
+ }
+
+/{
+ model = "Delta Power AHE-50DC";
+ compatible = "delta,ahe50dc-bmc", "aspeed,ast2400";
+
+ aliases {
+ serial4 = &uart5;
+
+ /*
+ * pca9541-arbitrated logical i2c buses are numbered as the
+ * corresponding physical bus plus 20
+ */
+ i2c20 = &i2carb0;
+ i2c21 = &i2carb1;
+ i2c22 = &i2carb2;
+ i2c23 = &i2carb3;
+ i2c24 = &i2carb4;
+ i2c26 = &i2carb6;
+ i2c27 = &i2carb7;
+ i2c28 = &i2carb8;
+ i2c32 = &i2carb12;
+ };
+
+ chosen {
+ stdout-path = &uart3;
+ bootargs = "console=ttyS2,115200n8 earlycon";
+ };
+
+ memory@40000000 {
+ reg = <0x40000000 0x10000000>;
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ heartbeat {
+ gpios = <&gpio ASPEED_GPIO(P, 0) GPIO_ACTIVE_HIGH>;
+ linux,default-trigger = "heartbeat";
+ };
+
+ panic {
+ gpios = <&gpio ASPEED_GPIO(P, 2) GPIO_ACTIVE_HIGH>;
+ linux,default-trigger = "panic";
+ };
+ };
+
+ 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>;
+ };
+
+ EFUSE_OUTPUT(01);
+ EFUSE_OUTPUT(02);
+ EFUSE_OUTPUT(03);
+ EFUSE_OUTPUT(04);
+ EFUSE_OUTPUT(05);
+ EFUSE_OUTPUT(06);
+ EFUSE_OUTPUT(07);
+ EFUSE_OUTPUT(08);
+ EFUSE_OUTPUT(09);
+ EFUSE_OUTPUT(10);
+ EFUSE_OUTPUT(11);
+ EFUSE_OUTPUT(12);
+ EFUSE_OUTPUT(13);
+ EFUSE_OUTPUT(14);
+ EFUSE_OUTPUT(15);
+ EFUSE_OUTPUT(16);
+ EFUSE_OUTPUT(17);
+ EFUSE_OUTPUT(18);
+ EFUSE_OUTPUT(19);
+ EFUSE_OUTPUT(20);
+ EFUSE_OUTPUT(21);
+ EFUSE_OUTPUT(22);
+ EFUSE_OUTPUT(23);
+ EFUSE_OUTPUT(24);
+ EFUSE_OUTPUT(25);
+ EFUSE_OUTPUT(26);
+ EFUSE_OUTPUT(27);
+ EFUSE_OUTPUT(28);
+ EFUSE_OUTPUT(29);
+ EFUSE_OUTPUT(30);
+ EFUSE_OUTPUT(31);
+ EFUSE_OUTPUT(32);
+ EFUSE_OUTPUT(33);
+ EFUSE_OUTPUT(34);
+ EFUSE_OUTPUT(35);
+ EFUSE_OUTPUT(36);
+ EFUSE_OUTPUT(37);
+ EFUSE_OUTPUT(38);
+ EFUSE_OUTPUT(39);
+ EFUSE_OUTPUT(40);
+ EFUSE_OUTPUT(41);
+ EFUSE_OUTPUT(42);
+ EFUSE_OUTPUT(43);
+ EFUSE_OUTPUT(44);
+ EFUSE_OUTPUT(45);
+ EFUSE_OUTPUT(46);
+ EFUSE_OUTPUT(47);
+ EFUSE_OUTPUT(48);
+ EFUSE_OUTPUT(49);
+ EFUSE_OUTPUT(50);
+
+};
+
+&fmc {
+ status = "okay";
+
+ flash@0 {
+ status = "okay";
+ m25p,fast-read;
+ label = "flash0";
+ spi-max-frequency = <50000000>; // 50 MHz
+#include "openbmc-flash-layout.dtsi"
+ };
+};
+
+&uart3 {
+ status = "okay";
+};
+
+&mac1 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_rgmii2_default &pinctrl_mdio2_default>;
+};
+
+&i2c0 {
+ status = "okay";
+ bus-frequency = <200000>;
+
+ pca9541@79 {
+ compatible = "nxp,pca9541";
+ reg = <0x79>;
+
+ i2carb0: i2c-arb {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ /* lm25066 efuses @ 10-17, 40-47, 50-57 */
+ EFUSE(10, 03);
+ EFUSE(11, 04);
+ EFUSE(12, 01);
+ EFUSE(13, 02);
+ EFUSE(14, 13);
+ EFUSE(15, 14);
+ EFUSE(16, 15);
+ EFUSE(17, 16);
+ EFUSE(40, 12);
+ EFUSE(41, 11);
+ EFUSE(42, 10);
+ EFUSE(43, 09);
+ EFUSE(44, 08);
+ EFUSE(45, 07);
+ EFUSE(46, 05);
+ EFUSE(47, 06);
+ EFUSE(50, 17);
+ EFUSE(51, 18);
+ EFUSE(52, 20);
+ EFUSE(53, 19);
+ EFUSE(54, 22);
+ EFUSE(55, 21);
+ EFUSE(56, 24);
+ EFUSE(57, 23);
+ };
+ };
+};
+
+&i2c1 {
+ status = "okay";
+ bus-frequency = <200000>;
+
+ pca9541@72 {
+ compatible = "nxp,pca9541";
+ reg = <0x72>;
+
+ i2carb1: i2c-arb {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+ };
+};
+
+&i2c2 {
+ status = "okay";
+ bus-frequency = <200000>;
+
+ pca9541@73 {
+ compatible = "nxp,pca9541";
+ reg = <0x73>;
+
+ i2carb2: i2c-arb {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+ };
+};
+
+&i2c3 {
+ status = "okay";
+ bus-frequency = <200000>;
+
+ pca9541@74 {
+ compatible = "nxp,pca9541";
+ reg = <0x74>;
+
+ i2carb3: i2c-arb {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+ };
+};
+
+&i2c4 {
+ status = "okay";
+ bus-frequency = <200000>;
+
+ pca9541@7a {
+ compatible = "nxp,pca9541";
+ reg = <0x7a>;
+
+ i2carb4: i2c-arb {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ gpio@20 {
+ compatible = "nxp,pca9534";
+ reg = <0x20>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+
+ /* lm25066 efuses @ 10-17, 40-47, 50-57, 59, 5a */
+ EFUSE(10, 27);
+ EFUSE(11, 28);
+ EFUSE(12, 25);
+ EFUSE(13, 26);
+ EFUSE(14, 37);
+ EFUSE(15, 38);
+ EFUSE(16, 39);
+ EFUSE(17, 40);
+ EFUSE(40, 36);
+ EFUSE(41, 35);
+ EFUSE(42, 34);
+ EFUSE(43, 33);
+ EFUSE(44, 32);
+ EFUSE(45, 31);
+ EFUSE(46, 29);
+ EFUSE(47, 30);
+ EFUSE(50, 41);
+ EFUSE(51, 42);
+ EFUSE(52, 44);
+ EFUSE(53, 43);
+ EFUSE(54, 46);
+ EFUSE(55, 45);
+ EFUSE(56, 48);
+ EFUSE(57, 47);
+ EFUSE(59, 49);
+ EFUSE(5a, 50);
+ };
+ };
+};
+
+&i2c6 {
+ status = "okay";
+ bus-frequency = <200000>;
+
+ pca9541@75 {
+ compatible = "nxp,pca9541";
+ reg = <0x75>;
+
+ i2carb6: i2c-arb {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+ };
+};
+
+&i2c7 {
+ status = "okay";
+ bus-frequency = <200000>;
+
+ pca9541@76 {
+ compatible = "nxp,pca9541";
+ reg = <0x76>;
+
+ i2carb7: i2c-arb {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+ };
+};
+
+&i2c8 {
+ status = "okay";
+ bus-frequency = <200000>;
+
+ pca9541@7c {
+ compatible = "nxp,pca9541";
+ reg = <0x7c>;
+
+ i2carb8: i2c-arb {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ fancontrol@30 {
+ compatible = "delta,ahe50dc-fan";
+ reg = <0x30>;
+ };
+
+ /* Baseboard FRU eeprom */
+ eeprom@50 {
+ compatible = "atmel,24c02";
+ reg = <0x50>;
+ };
+ };
+ };
+};
+
+&i2c12 {
+ status = "okay";
+ bus-frequency = <200000>;
+
+ pca9541@71 {
+ compatible = "nxp,pca9541";
+ reg = <0x71>;
+
+ i2carb12: i2c-arb {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+ };
+};
+
+&gpio {
+ status = "okay";
+ gpio-line-names =
+ /* A */ "", "", "", "", "", "", "", "",
+ /* B */ "", "", "", "", "", "", "", "",
+ /* C */ "RESET_PEER_N", "HEARTBEAT_OUT", "", "", "", "", "", "",
+ /* D */ "", "", "", "", "", "", "", "",
+ /* E */ "DOOM_N", "", "", "", "", "LED_PWR_BLUE", "", "",
+ /* F */ "", "", "", "", "", "", "", "",
+ /* G */ "", "", "", "", "", "", "", "",
+ /* H */ "", "", "", "", "", "", "", "",
+ /* I */ "", "", "", "", "", "", "", "",
+ /* J */ "", "", "BMC_ID", "", "", "", "", "",
+ /* K */ "", "", "", "", "", "", "", "",
+ /* L */ "", "", "", "", "", "", "", "",
+ /* M */ "", "", "", "", "", "", "", "",
+ /* N */ "", "", "", "", "", "", "", "",
+ /* O */ "", "", "", "", "", "", "", "",
+ /* P */ "LED_GREEN", "", "LED_RED", "", "", "", "", "",
+ /* Q */ "", "", "", "", "", "", "", "",
+ /* R */ "", "", "", "", "", "", "", "",
+ /* S */ "", "", "", "", "", "", "", "",
+ /* T */ "", "", "", "", "", "", "", "",
+ /* U */ "", "", "", "", "", "", "", "",
+ /* V */ "", "", "", "", "", "", "", "",
+ /* W */ "", "", "", "", "", "", "", "",
+ /* X */ "", "", "", "", "", "", "", "",
+ /* Y */ "HEARTBEAT_IN", "BOARDREV0", "BOARDREV1", "",
+ /* Z */ "", "", "", "", "", "", "", "",
+ /* AA */ "", "", "", "", "", "", "", "",
+ /* AB */ "", "", "", "";
+
+ /*
+ * I don't rightly know what this GPIO really *is*, but setting it to
+ * zero causes the fans to run at full speed, after which setting it
+ * back to one causes a power output glitch, so install a hog to keep
+ * it at one as a failsafe to ensure nothing accidentally touches it.
+ */
+ doom-guardrail {
+ gpio-hog;
+ gpios = <ASPEED_GPIO(E, 0) GPIO_ACTIVE_LOW>;
+ output-low;
+ };
+};
+
+&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>;
+};
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