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ARM: dts: aspeed: Add NVIDIA MSX4 HPM

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The NVIDIA MSX4 HPM (host platform module) is a reference board for
managing up to 8 PCIe connected NVIDIA GPUs via ConnectX-8 (CX8)
SuperNICs. The BMC manages all GPUs and CX8s for both telemetry and
firmware update via MCTP over USB. The host CPUs are dual socket Intel
Granite Rapids processors.

For more detail on this architecture:

https://developer.nvidia.com/blog/nvidia-connectx-8-supernics-advance-ai-platform-architecture-with-pcie-gen6-connectivity/

Signed-off-by: Marc Olberding <molberding@nvidia.com>
Link: https://patch.msgid.link/20251126-msx1_devicetree-v5-2-e508d13e2dda@nvidia.com
[arj: Reflow text to wrap at limit, whitespace, grammar]
Signed-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>
This commit is contained in:
Marc Olberding 2025-11-26 16:43:07 -08:00 committed by Andrew Jeffery
parent 1daabbd6ff
commit f28674fab3
2 changed files with 247 additions and 0 deletions
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1
arch/arm/boot/dts/aspeed/Makefile
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@ -58,6 +58,7 @@ dtb-$(CONFIG_ARCH_ASPEED) += \
aspeed-bmc-lenovo-hr855xg2.dtb \ aspeed-bmc-lenovo-hr855xg2.dtb \
aspeed-bmc-microsoft-olympus.dtb \ aspeed-bmc-microsoft-olympus.dtb \
aspeed-bmc-nvidia-gb200nvl-bmc.dtb \ aspeed-bmc-nvidia-gb200nvl-bmc.dtb \
aspeed-bmc-nvidia-msx4-bmc.dtb \
aspeed-bmc-opp-lanyang.dtb \ aspeed-bmc-opp-lanyang.dtb \
aspeed-bmc-opp-mowgli.dtb \ aspeed-bmc-opp-mowgli.dtb \
aspeed-bmc-opp-nicole.dtb \ aspeed-bmc-opp-nicole.dtb \

246
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-msx4-bmc.dts Normal file
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@ -0,0 +1,246 @@
// 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 BMC";
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";
status = "okay";
#include "openbmc-flash-layout-128.dtsi"
};
flash@1 {
compatible = "jedec,spi-nor";
label = "alt-bmc";
spi-tx-bus-width = <1>;
spi-rx-bus-width = <1>;
status = "okay";
};
};
&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","";
};
// Devices on these busses are available after POST
// however there isn't a great way to defer probing
// until that point today, as the BMC doesn't
// have direct control over when the host completes
// POST, especially from the kernel.
&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";
};
&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";
};