ARM: dts: aspeed: Add ASRock ROMED8HM3 BMC

This is a half-width, single-socket Epyc server board with an AST2500
BMC.  This device tree is sufficient for basic OpenBMC functionality,
but we'll need to add a few more devices (as driver support becomes
available) before it's fully usable.
Signed-off-by: Zev Weiss <zev@bewilderbeest.net>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20220105101719.7093-1-zev@bewilderbeest.netSigned-off-by: Joel Stanley <joel@jms.id.au>

arch/arm/boot/dts/Makefile

@@ -1505,6 +1505,7 @@ dtb-$(CONFIG_ARCH_ASPEED) += \
 	aspeed-bmc-arm-centriq2400-rep.dtb \
 	aspeed-bmc-arm-stardragon4800-rep2.dtb \
 	aspeed-bmc-asrock-e3c246d4i.dtb \
+	aspeed-bmc-asrock-romed8hm3.dtb \
 	aspeed-bmc-bytedance-g220a.dtb \
 	aspeed-bmc-facebook-bletchley.dtb \
 	aspeed-bmc-facebook-cloudripper.dtb \

arch/arm/boot/dts/aspeed-bmc-asrock-romed8hm3.dts

+// SPDX-License-Identifier: GPL-2.0+
+/dts-v1/;
+
+#include "aspeed-g5.dtsi"
+#include <dt-bindings/gpio/aspeed-gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/{
+	model = "ASRock ROMED8HM3 BMC v1.00";
+	compatible = "asrock,romed8hm3-bmc", "aspeed,ast2500";
+
+	aliases {
+		serial4 = &uart5;
+	};
+
+	chosen {
+		stdout-path = &uart5;
+		bootargs = "console=tty0 console=ttyS4,115200 earlycon";
+	};
+
+	memory@80000000 {
+		reg = <0x80000000 0x20000000>;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		heartbeat {
+			gpios = <&gpio ASPEED_GPIO(H, 6) GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "timer";
+		};
+
+		system-fault {
+			gpios = <&gpio ASPEED_GPIO(Z, 2) GPIO_ACTIVE_LOW>;
+			panic-indicator;
+		};
+	};
+
+	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>, <&adc 15>;
+	};
+};
+
+&fmc {
+	status = "okay";
+	flash@0 {
+		status = "okay";
+		m25p,fast-read;
+		label = "bmc";
+		spi-max-frequency = <100000000>; /* 100 MHz */
+#include "openbmc-flash-layout-64.dtsi"
+	};
+};
+
+&uart5 {
+	status = "okay";
+};
+
+&vuart {
+	status = "okay";
+	aspeed,lpc-io-reg = <0x2f8>;
+	aspeed,lpc-interrupts = <3 IRQ_TYPE_LEVEL_HIGH>;
+};
+
+&mac0 {
+	status = "okay";
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_rgmii1_default &pinctrl_mdio1_default>;
+};
+
+&i2c0 {
+	status = "okay";
+
+	/* inlet temp sensor */
+	w83773g@4c {
+		compatible = "nuvoton,w83773g";
+		reg = <0x4c>;
+	};
+};
+
+&i2c1 {
+	status = "okay";
+};
+
+&i2c2 {
+	status = "okay";
+
+	/* IPB temp sensor */
+	w83773g@4c {
+		compatible = "nuvoton,w83773g";
+		reg = <0x4c>;
+	};
+
+	/* IPB PMIC */
+	lm25066@40 {
+		compatible = "lm25066";
+		reg = <0x40>;
+	};
+
+	/* 12VSB PMIC */
+	lm25066@41 {
+		compatible = "lm25066";
+		reg = <0x41>;
+	};
+};
+
+&i2c4 {
+	status = "okay";
+};
+
+&i2c5 {
+	status = "okay";
+};
+
+&i2c6 {
+	status = "okay";
+};
+
+&i2c7 {
+	status = "okay";
+
+	/* Baseboard FRU eeprom */
+	eeprom@50 {
+		compatible = "st,24c128", "atmel,24c128";
+		reg = <0x50>;
+		pagesize = <16>;
+	};
+};
+
+&i2c8 {
+	status = "okay";
+};
+
+&i2c9 {
+	status = "okay";
+};
+
+&video {
+	status = "okay";
+};
+
+&vhub {
+	status = "okay";
+};
+
+&lpc_ctrl {
+	status = "okay";
+};
+
+&lpc_snoop {
+	status = "okay";
+	snoop-ports = <0x80>;
+};
+
+&kcs3 {
+	status = "okay";
+	aspeed,lpc-io-reg = <0xca2>;
+};
+
+&pwm_tacho {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_pwm3_default
+		&pinctrl_pwm4_default
+		&pinctrl_pwm5_default
+		&pinctrl_pwm6_default>;
+
+	fan@3 {
+		reg = <0x03>;
+		aspeed,fan-tach-ch = /bits/ 8 <0x03 0x0b>;
+	};
+
+	fan@4 {
+		reg = <0x04>;
+		aspeed,fan-tach-ch = /bits/ 8 <0x04 0x0c>;
+	};
+
+	fan@5 {
+		reg = <0x05>;
+		aspeed,fan-tach-ch = /bits/ 8 <0x05 0x0d>;
+	};
+
+	fan@6 {
+		reg = <0x06>;
+		aspeed,fan-tach-ch = /bits/ 8 <0x06 0x0e>;
+	};
+};
+
+&gpio {
+	status = "okay";
+	gpio-line-names =
+		/*  A */ "LOCATORLED_STATUS_N", "BMC_MAC2_INTB", "NMI_BTN_N", "BMC_NMI",
+			"", "", "", "",
+		/*  B */ "DDR_MEM_TEMP", "", "", "", "", "", "", "",
+		/*  C */ "", "", "", "", "PCIE_HP_SEL_N", "PCIE_SATA_SEL_N", "LOCATORBTN", "",
+		/*  D */ "BMC_PSIN", "BMC_PSOUT", "BMC_RESETCON", "RESETCON",
+			"", "", "", "PSU_FAN_FAIL_N",
+		/*  E */ "", "", "", "", "", "", "", "",
+		/*  F */ "NIC_PWR_GOOD", "PRSNTB0", "PRSNTB1", "PRSNTB2",
+			"PRSNTB3", "", "3VSB_PCIE1_PG", "12V_PCIE1_PG",
+		/*  G */ "HWM_BAT_EN", "CHASSIS_ID0", "CHASSIS_ID1", "CHASSIS_ID2",
+			"BMC_ALERT1_N_R", "BMC_ALERT2_N_R", "BMC_ALERT3_N", "BMC_ALERT4_N",
+		/*  H */ "X24_C1_PRSNT", "X24_C2_PRSNT", "X24_C3_PRSNT", "FM_MEM_THERM_EVENT_BMC_R_N",
+			"FACMODE", "BMC_RTCRST", "BMC_HB_LED_N", "BMC_CASEOPEN",
+		/*  I */ "", "", "", "", "", "", "", "",
+		/*  J */ "BMC_READY", "BMC_PCH_BIOS_CS_N", "", "P0_MA_DDR_QS_CS_N",
+			"", "", "", "",
+		/*  K */ "", "", "", "", "", "", "", "",
+		/*  L */ "", "", "", "", "", "", "", "",
+		/*  M */ "", "", "MEZZ_PWRBRK_N", "OCP_HP_RST_EN",
+			"MAIN_PWR_EN_G", "BMC_MAIN_EN", "AUX_PWR_EN_G", "BMC_AUX_EN",
+		/*  N */ "", "", "", "", "", "", "", "",
+		/*  O */ "", "", "", "", "", "", "", "",
+		/*  P */ "", "", "", "", "", "", "", "",
+		/*  Q */ "", "", "", "",
+			"BMC_SMB_PRESENT_1_N", "BMC_SMB_PRESENT_2_N",
+			"BMC_SMB_PRESENT_3_N", "BMC_PCIE_WAKE_N",
+		/*  R */ "", "", "THERMALTRIP_CLEAR_N", "", "", "", "", "",
+		/*  S */ "", "", "", "", "", "", "", "",
+		/*  T */ "", "", "", "", "", "", "", "",
+		/*  U */ "", "", "", "", "", "", "", "",
+		/*  V */ "", "", "", "", "", "", "", "",
+		/*  W */ "", "", "", "", "", "", "", "",
+		/*  X */ "", "", "", "", "", "", "", "",
+		/*  Y */ "SLP_S3", "SLP_S4_S5", "NODE_ID_1", "NODE_ID_2", "", "", "", "",
+		/*  Z */ "", "", "SYSTEM_FAULT_LED_N", "FAST_THROTTLE_N",
+			"", "", "", "",
+		/* AA */ "FM_CPU0_IBMC_THERMTRIP_N", "", "PROCHOT_L_G", "",
+			"", "", "", "",
+		/* AB */ "BMC_FORCE_SELFREFRESH", "PWRGD_OUT", "", "IRQ_BMC_PCH_SMI_LPC_N",
+			"", "", "", "",
+		/* AC */ "", "", "", "", "", "", "", "";
+};
+
+&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>;
+};