linux-kernel - [PATCH v5 0/2] Adding device tree and binding for NVIDIA GB200-UT3.0b

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Message-ID: <20250718231118.3330855-1-donalds@nvidia.com>
Date: Fri, 18 Jul 2025 16:11:16 -0700
From: Donald Shannon <donalds@...dia.com>
To: <robh@...nel.org>, <krzk+dt@...nel.org>, <conor+dt@...nel.org>
CC: <joel@....id.au>, <andrew@...econstruct.com.au>,
	<devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-aspeed@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>, "Donald
 Shannon" <donalds@...dia.com>
Subject: [PATCH v5 0/2] Adding device tree and binding for NVIDIA GB200-UT3.0b

Patch 1 adds the binding for the NVIDIA GB200-UT3.0b platform.
Patch 2 adds the device tree for the NVIDIA GB200-UT3.0b platform.

This is an Aspeed AST2600 based unit testing platform for GB200.
UT3.0b is different than nvidia-gb200nvl-bmc due to networking topology
differences, additional gpio expanders, and voltage regulator gating
some devices.

Reference to Ast2600 SOC [1].
Reference to Blackwell GB200NVL Platform [2].

Link: https://www.aspeedtech.com/server_ast2600/ [1]
Link: https://nvdam.widen.net/s/wwnsxrhm2w/blackwell-datasheet-3384703 [2]
Signed-off-by: Donald Shannon <donalds@...dia.com>
---
Changes v1 -> v2:
  - Changed phy-mode to rgmii-id [Lunn]
  - Removed redundant max-speed for mac0 [Lunn]
  - Fixed typo from gb200nvl to gb200 in Makefile
Changes v2 -> v3:
 - Fixed whitespace issues [Krzysztof]
 - Fixed schema validation issues from my end ( there are still issues
 with the aspeed dtsi file that are not related to this new dts)
 [Herring]
 - Reordered to follow style guide [Krzysztof]
 - Removed redundant status okays
 - Changed vcc to vdd for the power gating on the gpio expanders
Changes v3 -> v4:
  - Added changelog [Krzysztof]
  - Added nvidia,gb200-ut30b board binding [Krzysztof]
  - Removed unused imports
  - Reordered a couple other style guide violations
  - Added back in a couple needed "status okay"s
Changes v4 -> v5:
 - Resumed my patch after a pause
 - Don't plan to make this include of nvidia-gb200nvl-bmc due to some
 platform differences
 - Fixed io expanders that weren't gated by the 3.3V standby regulator
 - Fixed incorrect interrupt pin for one IO expander
 - Removed some IO expanders and I2C busses
---

Donald Shannon (2):
  Documentation: devicetree: Add binding for NVIDIA  GB200-UT3.0b
    platform
  ARM: dts: aspeed: Add device tree for Nvidia's GB200  UT3.0b platform
    BMC

 .../bindings/arm/aspeed/aspeed.yaml           |    1 +
 arch/arm/boot/dts/aspeed/Makefile             |    1 +
 .../aspeed/aspeed-bmc-nvidia-gb200-ut30b.dts  | 1027 +++++++++++++++++
 3 files changed, 1029 insertions(+)
 create mode 100644 arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-gb200-ut30b.dts


base-commit: d086c886ceb9f59dea6c3a9dae7eb89e780a20c9
-- 
2.43.0