[PATCH 0/2] Add device tree for Asrock Paul IPMI Card

[PATCH 0/2] Add device tree for Asrock Paul IPMI Card

[Anirudh Srinivasan]

Adds support for Asrock Paul IPMI Card [1], which is an AST2500 based
PCIe card that provides BMC functionality. The supported functionality
is similar to the Asus Kommando IPMI Card, support for which was sent
previously [2].

Supported functionality includes UART, Booting from Primary SPI,
Networking, KVM functionality (USB Gadget and Video Engine), LEDs and
GPIO Power control. Complete BMC functionality has been tested on an
OpenBMC build available here [3], relying on this kernel branch [4].

For some reason, the Video Engine isn't always
stable when the host PC's video output goes black/changes
resolution, resulting in a hang and a subsequent reset of the Aspeed.
Applying this patch [5] from the Aspeed vendor kernel seems to fix this
issue. This doesn't require any changes to the device tree for this
device though, so I think it shouldn't affect this patch series.

[1] https://www.asrockrack.com/general/productdetail.asp?Model=PAUL
[2] https://lore.kernel.org/linux-aspeed/20260114-asus-ipmi-expansion-card-v2-0-12b72d20a9b9@gmail.com/
[3] https://github.com/Genius1237/openbmc/commits/asrock-paul-ipmi-card/
[4] https://github.com/openbmc/linux/compare/dev-6.18...Genius1237:linux:asrock-paul-ipmi-card-6.18 
[5] https://lore.kernel.org/linux-aspeed/20251124-video_dram_reset-v1-1-9d37229e4ec5@aspeedtech.com/

Signed-off-by: Anirudh Srinivasan <anirudhsriniv@gmail.com>
---
Anirudh Srinivasan (2):
      dt-bindings: arm: aspeed: Add Asrock Paul IPMI card
      ARM: dts: aspeed: Add Asrock Paul IPMI card

 .../devicetree/bindings/arm/aspeed/aspeed.yaml     |   1 +
 arch/arm/boot/dts/aspeed/Makefile                  |   1 +
 .../aspeed/aspeed-bmc-asrock-paul-ipmi-card.dts    | 131 +++++++++++++++++++++
 3 files changed, 133 insertions(+)
---
base-commit: 9448598b22c50c8a5bb77a9103e2d49f134c9578
change-id: 20260125-asrock-paul-5d0d4b15c8bc

Best regards,
-- 
Anirudh Srinivasan <anirudhsriniv@gmail.com>

[PATCH 1/2] dt-bindings: arm: aspeed: Add Asrock Paul IPMI card

[Anirudh Srinivasan]

Document the new comptaibles for AST2500 based Asrock Paul IPMI card

Signed-off-by: Anirudh Srinivasan <anirudhsriniv@gmail.com>
---
 Documentation/devicetree/bindings/arm/aspeed/aspeed.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/arm/aspeed/aspeed.yaml b/Documentation/devicetree/bindings/arm/aspeed/aspeed.yaml
index 9298c1a75dd13b447e5ddbc64c5e169dcd08fb15..4660b615da18b7cc390ad0cf95f5a3d7523a865a 100644
--- a/Documentation/devicetree/bindings/arm/aspeed/aspeed.yaml
+++ b/Documentation/devicetree/bindings/arm/aspeed/aspeed.yaml
@@ -34,6 +34,7 @@ properties:
               - amd,ethanolx-bmc
               - ampere,mtjade-bmc
               - aspeed,ast2500-evb
+              - asrock,ast2500-paul-ipmi-card
               - asrock,e3c246d4i-bmc
               - asrock,e3c256d4i-bmc
               - asrock,romed8hm3-bmc

-- 
2.52.0

Re: [PATCH 1/2] dt-bindings: arm: aspeed: Add Asrock Paul IPMI card

[Conor Dooley]

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Acked-by: Conor Dooley <conor.dooley@microchip.com>
pw-bot: not-applicable

[-- Attachment #2: signature.asc --]
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[PATCH 2/2] ARM: dts: aspeed: Add Asrock Paul IPMI card

[Anirudh Srinivasan]

Add device tree for Asrock Paul IPMI card, an AST2500 based PCIe BMC
card.

Signed-off-by: Anirudh Srinivasan <anirudhsriniv@gmail.com>
---
 arch/arm/boot/dts/aspeed/Makefile                  |   1 +
 .../aspeed/aspeed-bmc-asrock-paul-ipmi-card.dts    | 131 +++++++++++++++++++++
 2 files changed, 132 insertions(+)

diff --git a/arch/arm/boot/dts/aspeed/Makefile b/arch/arm/boot/dts/aspeed/Makefile
index 9adf9278dc94f84653775296c93150e61cc99328..be3c84a8462353996e0503cd95326ed88f6b8723 100644
--- a/arch/arm/boot/dts/aspeed/Makefile
+++ b/arch/arm/boot/dts/aspeed/Makefile
@@ -11,6 +11,7 @@ dtb-$(CONFIG_ARCH_ASPEED) += \
 	aspeed-bmc-arm-stardragon4800-rep2.dtb \
 	aspeed-bmc-asrock-e3c246d4i.dtb \
 	aspeed-bmc-asrock-e3c256d4i.dtb \
+	aspeed-bmc-asrock-paul-ipmi-card.dtb \
 	aspeed-bmc-asrock-romed8hm3.dtb \
 	aspeed-bmc-asrock-spc621d8hm3.dtb \
 	aspeed-bmc-asrock-x570d4u.dtb \
diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-paul-ipmi-card.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-paul-ipmi-card.dts
new file mode 100644
index 0000000000000000000000000000000000000000..f74f8fee9e1edb6cc1c0a0aef1268bdf91fc03f7
--- /dev/null
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-paul-ipmi-card.dts
@@ -0,0 +1,131 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+// Copyright 2025 Anirudh Srinivasan
+
+/dts-v1/;
+
+#include "aspeed-g5.dtsi"
+#include <dt-bindings/gpio/aspeed-gpio.h>
+
+/{
+	model = "ASRock Paul IPMI Card";
+	compatible = "asrock,ast2500-paul-ipmi-card", "aspeed,ast2500";
+
+	aliases {
+		serial4 = &uart5;
+	};
+
+	chosen {
+		stdout-path = &uart5;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led-fan-1 {
+			gpios = <&gpio ASPEED_GPIO(AA, 0) GPIO_ACTIVE_LOW>;
+			label = "fan1_red";
+			default-state = "off";
+		};
+
+		led-fan-2 {
+			gpios = <&gpio ASPEED_GPIO(AA, 1) GPIO_ACTIVE_LOW>;
+			label = "fan2_red";
+			default-state = "off";
+		};
+
+		led-fault {
+			gpios = <&gpio ASPEED_GPIO(Y, 3) GPIO_ACTIVE_LOW>;
+			label = "panic_red";
+			panic-indicator;
+			default-state = "off";
+		};
+
+		led-heartbeat {
+			gpios = <&gpio ASPEED_GPIO(H, 6) GPIO_ACTIVE_LOW>;
+			label = "heartbeat_green";
+			linux,default-trigger = "timer";
+		};
+	};
+
+	memory@80000000 {
+		reg = <0x80000000 0x20000000>;
+	};
+
+	reserved-memory {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		video_engine_memory: video {
+			size = <0x02000000>;
+			alignment = <0x01000000>;
+			compatible = "shared-dma-pool";
+			reusable;
+		};
+	};
+};
+
+&fmc {
+	status = "okay";
+	flash@0 {
+		status = "okay";
+		m25p,fast-read;
+		label = "bmc";
+		spi-max-frequency = <50000000>; /* 50 MHz */
+#include "openbmc-flash-layout.dtsi"
+	};
+};
+
+&gpio {
+	status = "okay";
+	gpio-line-names =
+		/*  A */ "", "", "", "", "", "", "", "",
+		/*  B */ "", "", "", "", "", "", "", "",
+		/*  C */ "", "", "", "", "", "", "", "",
+		/*  D */ "", "BMC_PWRBTN", "", "BMC_RESETCON", "", "", "", "",
+		/*  E */ "", "", "", "", "", "", "", "",
+		/*  F */ "", "", "", "", "", "", "", "",
+		/*  G */ "", "", "", "", "", "", "", "",
+		/*  H */ "", "", "", "", "", "", "BMC_LED1", "",
+		/*  I */ "", "", "", "", "", "", "", "",
+		/*  J */ "", "", "", "", "", "", "", "",
+		/*  K */ "", "", "", "", "", "", "", "",
+		/*  L */ "", "", "", "", "", "", "", "",
+		/*  M */ "", "", "", "", "", "", "", "",
+		/*  N */ "", "", "", "", "", "", "", "",
+		/*  O */ "", "", "", "", "", "", "", "",
+		/*  P */ "", "", "", "", "", "", "", "",
+		/*  Q */ "", "", "", "", "", "", "", "",
+		/*  R */ "", "", "", "", "", "", "", "",
+		/*  S */ "", "", "", "", "", "", "", "",
+		/*  T */ "", "", "", "", "", "", "", "",
+		/*  U */ "", "", "", "", "", "", "", "",
+		/*  V */ "", "", "", "", "", "", "", "",
+		/*  W */ "", "", "", "", "", "", "", "",
+		/*  X */ "", "", "", "", "", "PCIE_STNDBY", "", "",
+		/*  Y */ "", "", "", "SYSTEM_ERR_LED", "", "", "", "",
+		/*  Z */ "", "", "", "", "", "", "", "",
+		/* AA */ "FAN_1_LED", "FAN_2_LED", "", "", "", "", "", "",
+		/* AB */ "", "", "", "", "", "", "", "",
+		/* AC */ "", "", "", "", "", "", "", "";
+};
+
+&mac0 {
+	status = "okay";
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_rgmii1_default &pinctrl_mdio1_default>;
+};
+
+&uart5 {
+	status = "okay";
+};
+
+&vhub {
+	status = "okay";
+};
+
+&video {
+	status = "okay";
+	memory-region = <&video_engine_memory>;
+};

-- 
2.52.0

Re: [PATCH 0/2] Add device tree for Asrock Paul IPMI Card

[Andrew Jeffery]

On Sun, 2026-01-25 at 15:00 -0600, Anirudh Srinivasan wrote:
> Adds support for Asrock Paul IPMI Card [1], which is an AST2500 based
> PCIe card that provides BMC functionality. The supported functionality
> is similar to the Asus Kommando IPMI Card, support for which was sent
> previously [2].

Due to ordering wrt other patches on the list this ended up with some
minor conflicts in the binding and Makefile. I've fixed those up and
applied it.

Thanks,

Andrew