ARM: dts: aspeed: Adding Facebook TiogaPass BMC

Initial introduction of Facebook TiogaPass family equipped with
Aspeed 2500 BMC SoC. TiogaPass is a x86 server development kit
with a ASPEED ast2500 BMC manufactured by Facebook.

Specifically, This adds the TiogaPass platform device tree file
including the flash layout used by the TiogaPass BMC machines.

Signed-off-by: Vijay Khemka <vijaykhemka@fb.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>

arch/arm/boot/dts/Makefile

@@ -1200,6 +1200,7 @@ dtb-$(CONFIG_ARCH_ASPEED) += \
 	aspeed-ast2500-evb.dtb \
 	aspeed-bmc-arm-centriq2400-rep.dtb \
 	aspeed-bmc-arm-stardragon4800-rep2.dtb \
+	aspeed-bmc-facebook-tiogapass.dtb \
 	aspeed-bmc-intel-s2600wf.dtb \
 	aspeed-bmc-opp-lanyang.dtb \
 	aspeed-bmc-opp-palmetto.dtb \

arch/arm/boot/dts/aspeed-bmc-facebook-tiogapass.dts

@@ -0,0 +1,146 @@
+// SPDX-License-Identifier: GPL-2.0+
+// Copyright (c) 2018 Facebook Inc.
+// Author: Vijay Khemka <vijaykhemka@fb.com>
+/dts-v1/;
+
+#include "aspeed-g5.dtsi"
+#include <dt-bindings/gpio/aspeed-gpio.h>
+
+/ {
+	model = "Facebook TiogaPass BMC";
+	compatible = "facebook,tiogapass-bmc", "aspeed,ast2500";
+	aliases {
+		serial0 = &uart1;
+		serial4 = &uart5;
+	};
+	chosen {
+		stdout-path = &uart5;
+		bootargs = "console=ttyS4,115200 earlyprintk";
+	};
+
+	memory@80000000 {
+		reg = <0x80000000 0x20000000>;
+	};
+};
+
+&fmc {
+	status = "okay";
+	flash@0 {
+		status = "okay";
+		m25p,fast-read;
+#include "openbmc-flash-layout.dtsi"
+	};
+};
+
+&spi1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_spi1_default>;
+	flash@0 {
+		status = "okay";
+		m25p,fast-read;
+		label = "pnor";
+	};
+};
+
+&uart1 {
+	// Host Console
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_txd1_default
+		     &pinctrl_rxd1_default>;
+};
+
+&uart5 {
+	// BMC Console
+	status = "okay";
+};
+
+&mac0 {
+	status = "okay";
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_rmii1_default>;
+	use-ncsi;
+};
+
+&i2c0 {
+	status = "okay";
+	//Airmax Conn B, CPU0 PIROM, CPU1 PIROM
+};
+
+&i2c1 {
+	status = "okay";
+	//X24 Riser
+};
+
+&i2c2 {
+	status = "okay";
+	// Mezz Management SMBus
+};
+
+&i2c3 {
+	status = "okay";
+	// SMBus to Board ID EEPROM
+};
+
+&i2c4 {
+	status = "okay";
+	// BMC Debug Header
+};
+
+&i2c5 {
+	status = "okay";
+	// CPU Voltage regulators
+};
+
+&i2c6 {
+	status = "okay";
+	tpm@20 {
+		compatible = "infineon,slb9645tt";
+		reg = <0x20>;
+	};
+	tmp421@4e {
+		compatible = "ti,tmp421";
+		reg = <0x4e>;
+	};
+	tmp421@4f {
+		compatible = "ti,tmp421";
+		reg = <0x4f>;
+	};
+	eeprom@54 {
+		compatible = "atmel,24c64";
+		reg = <0x54>;
+		pagesize = <32>;
+	};
+};
+
+&i2c7 {
+	status = "okay";
+	//HSC, AirMax Conn A
+};
+
+&i2c8 {
+	status = "okay";
+	//Mezz Sensor SMBus
+};
+
+&i2c9 {
+	status = "okay";
+	//USB Debug Connector
+};
+
+&pwm_tacho {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_pwm0_default &pinctrl_pwm1_default>;
+	fan@0 {
+		reg = <0x00>;
+		aspeed,fan-tach-ch = /bits/ 8 <0x00>;
+	};
+
+	fan@1 {
+		reg = <0x00>;
+		aspeed,fan-tach-ch = /bits/ 8 <0x01>;
+	};
+};