Adds a dts for the nvidia mgx pcie switchboard reference
platformi hpm. This is a dual socket granite rapids based platform.

Signed-off-by: Marc Olberding <molberding@nvidia.com>
---
 arch/arm/boot/dts/aspeed/Makefile                  |   1 +
 .../boot/dts/aspeed/aspeed-bmc-nvidia-msx4-bmc.dts | 254 +++++++++++++++++++++
 2 files changed, 255 insertions(+)

diff --git a/arch/arm/boot/dts/aspeed/Makefile b/arch/arm/boot/dts/aspeed/Makefile
index 0f0b5b7076545e6babb2f25f302b5d70b71d8a19..c3ce0d218b53f2b4c37061cace483f5f2c6d3bf1 100644
--- a/arch/arm/boot/dts/aspeed/Makefile
+++ b/arch/arm/boot/dts/aspeed/Makefile
@@ -56,6 +56,7 @@ dtb-$(CONFIG_ARCH_ASPEED) += \
 	aspeed-bmc-lenovo-hr855xg2.dtb \
 	aspeed-bmc-microsoft-olympus.dtb \
 	aspeed-bmc-nvidia-gb200nvl-bmc.dtb \
+	aspeed-bmc-nvidia-msx4-bmc.dtb \
 	aspeed-bmc-opp-lanyang.dtb \
 	aspeed-bmc-opp-mowgli.dtb \
 	aspeed-bmc-opp-nicole.dtb \
diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-msx4-bmc.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-msx4-bmc.dts
new file mode 100644
index 0000000000000000000000000000000000000000..383e53656a3f3dbb0f394b5f8dddc58405cd8da2
--- /dev/null
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-msx4-bmc.dts
@@ -0,0 +1,254 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+
+#include "aspeed-g6.dtsi"
+#include <dt-bindings/gpio/aspeed-gpio.h>
+#include <dt-bindings/i2c/i2c.h>
+
+/ {
+	model = "AST2600 MSX4 Kernel";
+	compatible = "nvidia,msx4-bmc", "aspeed,ast2600";
+
+	aliases {
+		serial0 = &uart1;
+		serial1 = &uart2;
+		serial2 = &uart3;
+		serial3 = &uart4;
+		serial4 = &uart5;
+	};
+
+	chosen {
+		stdout-path = "uart5:115200n8";
+	};
+
+	memory@80000000 {
+		device_type = "memory";
+		reg = <0x80000000 0x80000000>;
+	};
+
+	reserved-memory {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		gfx_memory: framebuffer {
+			compatible = "shared-dma-pool";
+			size = <0x01000000>;
+			alignment = <0x01000000>;
+			reusable;
+		};
+
+		video_engine_memory: jpegbuffer {
+			compatible = "shared-dma-pool";
+			size = <0x02000000>;	/* 32M */
+			alignment = <0x01000000>;
+			reusable;
+		};
+	};
+};
+
+&ehci1 {
+	status = "okay";
+};
+
+&fmc {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		label = "bmc";
+		spi-tx-bus-width = <4>;
+		spi-rx-bus-width = <4>;
+		status = "okay";
+		#include "openbmc-flash-layout-128.dtsi"
+	};
+};
+
+&gfx {
+	memory-region = <&gfx_memory>;
+	status = "okay";
+};
+
+&gpio0 {
+	gpio-line-names =
+	/*A0-A7*/	"","","","","","","","",
+	/*B0-B7*/	"ASSERT_BMC_READY","","","","","","","",
+	/*C0-C7*/	"MON_PWR_GOOD","","","","","","","FP_ID_LED_N",
+	/*D0-D7*/	"","","","","","","","",
+	/*E0-E7*/	"","","","","","","","",
+	/*F0-F7*/	"","","","","","","","",
+	/*G0-G7*/	"","","FP_LED_STATUS_GREEN_N","FP_LED_STATUS_AMBER_N",
+			"","","","",
+	/*H0-H7*/	"","","","","","","","",
+	/*I0-I7*/	"","","","","","","","",
+	/*J0-J7*/	"","","","","","","","",
+	/*K0-K7*/	"","","","","","","","",
+	/*L0-L7*/	"","","","","","","","",
+	/*M0-M7*/	"","","","","","","","",
+	/*N0-N7*/	"","","","","","","","",
+	/*O0-O7*/	"","","","","","","","",
+	/*P0-P7*/	"MON_PWR_BTN_L","ASSERT_PWR_BTN_L","MON_RST_BTN_L",
+			"ASSERT_RST_BTN_L","","ASSERT_NMI_BTN_L","","",
+	/*Q0-Q7*/	"","","MEMORY_HOT_0","MEMORY_HOT_1","","","","",
+	/*R0-R7*/	"ID_BTN","","","","","VBAT_GPIO","","",
+	/*S0-S7*/	"","","RST_PCA_MUX","","","","","",
+	/*T0-T7*/	"","","","","","","","",
+	/*U0-U7*/	"","","","","","","","",
+	/*V0-V7*/	"","","","","","","","",
+	/*W0-W7*/	"","","","","","","","",
+	/*X0-X7*/	"","","","","","","","",
+	/*Y0-Y7*/	"","","","","","","","",
+	/*Z0-Z7*/	"","","","","","","","";
+};
+
+&gpio1 {
+	gpio-line-names =
+	/*18A0-18A7*/ "","","","","","","","",
+	/*18B0-18B7*/ "","","","","","","","",
+	/*18C0-18C7*/ "","","","","","","","",
+	/*18D0-18D7*/ "","","","","","","","",
+	/*18E0-18E3*/ "","","BMC_INIT_DONE","";
+};
+
+&i2c0 {
+	status = "okay";
+};
+
+&i2c1 {
+	status = "okay";
+};
+
+&i2c2 {
+	status = "okay";
+};
+
+&i2c3 {
+	status = "okay";
+};
+
+&i2c4 {
+	status = "okay";
+
+	eeprom@51 {
+		compatible = "atmel,24c256";
+		reg = <0x51>;
+		pagesize = <64>;
+		label = "sku";
+	};
+};
+
+&i2c5 {
+	status = "okay";
+};
+
+&i2c6 {
+	status = "okay";
+};
+
+&i2c7 {
+	status = "okay";
+};
+
+&i2c8 {
+	status = "okay";
+};
+
+&i2c9 {
+	status = "okay";
+};
+
+&i2c10 {
+	status = "okay";
+};
+
+&i2c11 {
+	status = "okay";
+};
+
+&i2c12 {
+	status = "okay";
+};
+
+&i2c13 {
+	status = "okay";
+};
+
+&i2c15 {
+	status = "okay";
+};
+
+&kcs1 {
+	aspeed,lpc-io-reg = <0xca0>;
+	status = "okay";
+};
+
+&kcs2 {
+	aspeed,lpc-io-reg = <0xca8>;
+	status = "okay";
+};
+
+&kcs3 {
+	aspeed,lpc-io-reg = <0xca2>;
+	status = "okay";
+};
+
+&lpc_reset {
+	status = "okay";
+};
+
+&mac0 {
+	// bootloader takes care of proper mac delays for now.
+	// set the phy mode to rgmii, and if/when the driver is
+	// fixed, we can make the switchover to rgmii-id
+	// and have the phy handle the delays.
+	phy-mode = "rgmii";
+	phy-handle = <&ethphy3>;
+	status = "okay";
+};
+
+&mdio3 {
+	status = "okay";
+
+	ethphy3: ethernet-phy@2 {
+		compatible = "ethernet-phy-ieee802.3-c22";
+		reg = <2>;
+	};
+};
+
+&rtc {
+	status = "okay";
+};
+
+&sgpiom0 {
+	ngpios = <80>;
+	status = "okay";
+};
+
+&uart_routing {
+	status = "okay";
+};
+
+&uart1 {
+	status = "okay";
+};
+
+&uart2 {
+	status = "okay";
+};
+
+&uart3 {
+	status = "okay";
+};
+
+&uart4 {
+	status = "okay";
+};
+
+&uart5 {
+	status = "okay";
+};
+
+&video {
+	memory-region = <&video_engine_memory>;
+	status = "okay";
+};

-- 
2.34.1

> +&mac0 {
> +	// bootloader takes care of proper mac delays for now.
> +	// set the phy mode to rgmii, and if/when the driver is
> +	// fixed, we can make the switchover to rgmii-id
> +	// and have the phy handle the delays.
> +	phy-mode = "rgmii";
> +	phy-handle = <&ethphy3>;
> +	status = "okay";
> +};

There is some progress being made on this at the moment. So please
just drop this node for the moment. You can add the correct node once
the MAC driver is fixed.

	Andrew