[PATCH v8 0/2] ARM: dts: aspeed: Add ASRock Rack B650D4U BMC support

[PATCH v8 0/2] ARM: dts: aspeed: Add ASRock Rack B650D4U BMC support

[Prasanth Kumar Padarthi]

Changes in v8:
- Correct the reported validation configuration.
- Validate the DTB with multi_v7_defconfig,
  CONFIG_ARCH_ASPEED=y, and CONFIG_MACH_ASPEED_G6=y.
- Preserve the reviewed DTS content and review trailers.

Prasanth Kumar Padarthi (2):
  dt-bindings: arm: aspeed: Add ASRock Rack B650D4U
  ARM: dts: aspeed: Add ASRock Rack B650D4U BMC

 .../bindings/arm/aspeed/aspeed.yaml           |   1 +
 arch/arm/boot/dts/aspeed/Makefile             |   1 +
 .../dts/aspeed/aspeed-bmc-asrock-b650d4u.dts  | 135 ++++++++++++++++++
 3 files changed, 137 insertions(+)
 create mode 100644 arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-b650d4u.dts

-- 
2.47.3

[PATCH v8 1/2] dt-bindings: arm: aspeed: Add ASRock Rack B650D4U

[Prasanth Kumar Padarthi]

Add the compatible string for the ASRock Rack B650D4U BMC,
which is an AST2600-based server motherboard.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Prasanth Kumar Padarthi <prasanth.padarthi10@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 9ba195b8f22d..4c9e96801c1a 100644
--- a/Documentation/devicetree/bindings/arm/aspeed/aspeed.yaml
+++ b/Documentation/devicetree/bindings/arm/aspeed/aspeed.yaml
@@ -81,6 +81,7 @@ properties:
               - ampere,mtmitchell-bmc
               - aspeed,ast2600-evb
               - aspeed,ast2600-evb-a1
+              - asrock,b650d4u-bmc
               - asus,ast2600-kommando-ipmi-card
               - asus,x4tf-bmc
               - facebook,anacapa-bmc
-- 
2.47.3

[PATCH v8 2/2] ARM: dts: aspeed: Add ASRock Rack B650D4U BMC

[Prasanth Kumar Padarthi]

Add the device tree for the ASRock Rack B650D4U BMC, which is
based on the ASPEED AST2600 SoC.

Describe the BMC memory, SPI NOR flash layout, UART console,
GPIO line names, video framebuffer memory, I2C EEPROM, and MAC0
connected to an RTL8211F Ethernet PHY.

Use the EEPROM on I2C7 as the NVMEM provider for the MAC0 address.

Configure MAC0 to use the RTL8211F in RGMII-ID mode.

Reviewed-by: Andrew Lunn <andrew@lunn.ch> # MAC0 and MDIO nodes only
Signed-off-by: Prasanth Kumar Padarthi <prasanth.padarthi10@gmail.com>
---
 arch/arm/boot/dts/aspeed/Makefile             |   1 +
 .../dts/aspeed/aspeed-bmc-asrock-b650d4u.dts  | 135 ++++++++++++++++++
 2 files changed, 136 insertions(+)
 create mode 100644 arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-b650d4u.dts

diff --git a/arch/arm/boot/dts/aspeed/Makefile b/arch/arm/boot/dts/aspeed/Makefile
index 6b68671f9379..b109491d5c8f 100644
--- a/arch/arm/boot/dts/aspeed/Makefile
+++ b/arch/arm/boot/dts/aspeed/Makefile
@@ -10,6 +10,7 @@ dtb-$(CONFIG_ARCH_ASPEED) += \
 	aspeed-bmc-ampere-mtmitchell.dtb \
 	aspeed-bmc-arm-stardragon4800-rep2.dtb \
 	aspeed-bmc-asrock-altrad8.dtb \
+	aspeed-bmc-asrock-b650d4u.dtb \
 	aspeed-bmc-asrock-e3c246d4i.dtb \
 	aspeed-bmc-asrock-e3c256d4i.dtb \
 	aspeed-bmc-asrock-paul-ipmi-card.dtb \
diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-b650d4u.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-b650d4u.dts
new file mode 100644
index 000000000000..a4e384588a54
--- /dev/null
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-b650d4u.dts
@@ -0,0 +1,135 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+
+#include "aspeed-g6.dtsi"
+
+/ {
+	compatible = "asrock,b650d4u-bmc", "aspeed,ast2600";
+	model = "ASRock Rack B650D4U BMC";
+
+	aliases {
+		serial0 = &uart5;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory@80000000 {
+		device_type = "memory";
+		reg = <0x80000000 0x20000000>;
+	};
+
+	reserved-memory {
+		ranges;
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		gfx_memory: framebuffer {
+			compatible = "shared-dma-pool";
+			alignment = <0x01000000>;
+			reusable;
+			size = <0x01000000>;
+		};
+	};
+};
+
+&fmc {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		label = "bmc";
+		spi-max-frequency = <50000000>;
+		spi-rx-bus-width = <4>;
+		m25p,fast-read;
+
+		status = "okay";
+
+#include "openbmc-flash-layout-64.dtsi"
+	};
+};
+
+&gfx {
+	memory-region = <&gfx_memory>;
+
+	status = "okay";
+};
+
+&gpio0 {
+	gpio-line-names =
+		/* A0-A7 */	"","","","","","","","",
+		/* B0-B7 */	"","","","","","","","",
+		/* C0-C7 */	"","","","","","","","",
+		/* D0-D7 */	"","","","","","","","",
+		/* E0-E7 */	"","","","","","","","",
+		/* F0-F7 */	"","","","","","","","",
+		/* G0-G7 */	"","","","","","","","",
+		/* H0-H7 */	"","","","","","","","",
+		/* I0-I7 */	"","","","","","","","",
+		/* J0-J7 */	"","","","","","","","",
+		/* K0-K7 */	"","","","","","","","",
+		/* L0-L7 */	"","","","","","","","",
+		/* M0-M7 */	"","","","","","","","",
+		/* N0-N7 */	"","","","","","","","",
+		/* O0-O7 */	"","","","","","","","",
+		/* P0-P7 */	"button-reset-n","control-reset-n",
+		"button-power-n","control-power-n",
+		"button-nmi-n","control-nmi-n",
+		"","",
+		/* Q0-Q7 */	"","","","","","","","",
+		/* R0-R7 */	"","","","","","","","",
+		/* S0-S7 */	"","","","","","","","",
+		/* T0-T7 */	"","","","","","","","",
+		/* U0-U7 */	"","","","","","","","",
+		/* V0-V7 */	"","","","","","","","",
+		/* W0-W7 */	"","","","","","","","",
+		/* X0-X7 */	"","","","","","","","",
+		/* Y0-Y7 */	"","","","","","","","",
+		/* Z0-Z7 */	"","","","","","","","";
+};
+
+&i2c7 {
+	status = "okay";
+
+	eeprom@57 {
+		compatible = "atmel,24c128";
+		reg = <0x57>;
+		pagesize = <16>;
+
+		nvmem-layout {
+			compatible = "fixed-layout";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			eth0_macaddress: macaddress@3f80 {
+				reg = <0x3f80 6>;
+			};
+		};
+	};
+};
+
+&mac0 {
+	nvmem-cells = <&eth0_macaddress>;
+	nvmem-cell-names = "mac-address";
+	phy-handle = <&ethphy0>;
+	phy-mode = "rgmii-id";
+	pinctrl-0 = <&pinctrl_rgmii1_default>;
+	pinctrl-names = "default";
+
+	status = "okay";
+};
+
+&mdio0 {
+	status = "okay";
+
+	ethphy0: ethernet-phy@0 {
+		compatible = "ethernet-phy-ieee802.3-c22";
+		reg = <0>;
+	};
+};
+
+&uart5 {
+	status = "okay";
+};
-- 
2.47.3

Re: [PATCH v8 2/2] ARM: dts: aspeed: Add ASRock Rack B650D4U BMC

[Prasanth]

Hi,

A gentle follow-up on the B650D4U BMC device-tree series posted on October 2.

Could you please let me know whether any further changes or validation
are needed before this series can be picked up?

Thanks,
Prasanth

On Fri, Oct 2, 2026 at 11:59 AM Prasanth Kumar Padarthi
<prasanth.padarthi10@gmail.com> wrote:
>
> Add the device tree for the ASRock Rack B650D4U BMC, which is
> based on the ASPEED AST2600 SoC.
>
> Describe the BMC memory, SPI NOR flash layout, UART console,
> GPIO line names, video framebuffer memory, I2C EEPROM, and MAC0
> connected to an RTL8211F Ethernet PHY.
>
> Use the EEPROM on I2C7 as the NVMEM provider for the MAC0 address.
>
> Configure MAC0 to use the RTL8211F in RGMII-ID mode.
>
> Reviewed-by: Andrew Lunn <andrew@lunn.ch> # MAC0 and MDIO nodes only
> Signed-off-by: Prasanth Kumar Padarthi <prasanth.padarthi10@gmail.com>
> ---
>  arch/arm/boot/dts/aspeed/Makefile             |   1 +
>  .../dts/aspeed/aspeed-bmc-asrock-b650d4u.dts  | 135 ++++++++++++++++++
>  2 files changed, 136 insertions(+)
>  create mode 100644 arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-b650d4u.dts
>
> diff --git a/arch/arm/boot/dts/aspeed/Makefile b/arch/arm/boot/dts/aspeed/Makefile
> index 6b68671f9379..b109491d5c8f 100644
> --- a/arch/arm/boot/dts/aspeed/Makefile
> +++ b/arch/arm/boot/dts/aspeed/Makefile
> @@ -10,6 +10,7 @@ dtb-$(CONFIG_ARCH_ASPEED) += \
>         aspeed-bmc-ampere-mtmitchell.dtb \
>         aspeed-bmc-arm-stardragon4800-rep2.dtb \
>         aspeed-bmc-asrock-altrad8.dtb \
> +       aspeed-bmc-asrock-b650d4u.dtb \
>         aspeed-bmc-asrock-e3c246d4i.dtb \
>         aspeed-bmc-asrock-e3c256d4i.dtb \
>         aspeed-bmc-asrock-paul-ipmi-card.dtb \
> diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-b650d4u.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-b650d4u.dts
> new file mode 100644
> index 000000000000..a4e384588a54
> --- /dev/null
> +++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-b650d4u.dts
> @@ -0,0 +1,135 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/dts-v1/;
> +
> +#include "aspeed-g6.dtsi"
> +
> +/ {
> +       compatible = "asrock,b650d4u-bmc", "aspeed,ast2600";
> +       model = "ASRock Rack B650D4U BMC";
> +
> +       aliases {
> +               serial0 = &uart5;
> +       };
> +
> +       chosen {
> +               stdout-path = "serial0:115200n8";
> +       };
> +
> +       memory@80000000 {
> +               device_type = "memory";
> +               reg = <0x80000000 0x20000000>;
> +       };
> +
> +       reserved-memory {
> +               ranges;
> +               #address-cells = <1>;
> +               #size-cells = <1>;
> +
> +               gfx_memory: framebuffer {
> +                       compatible = "shared-dma-pool";
> +                       alignment = <0x01000000>;
> +                       reusable;
> +                       size = <0x01000000>;
> +               };
> +       };
> +};
> +
> +&fmc {
> +       status = "okay";
> +
> +       flash@0 {
> +               compatible = "jedec,spi-nor";
> +               reg = <0>;
> +               label = "bmc";
> +               spi-max-frequency = <50000000>;
> +               spi-rx-bus-width = <4>;
> +               m25p,fast-read;
> +
> +               status = "okay";
> +
> +#include "openbmc-flash-layout-64.dtsi"
> +       };
> +};
> +
> +&gfx {
> +       memory-region = <&gfx_memory>;
> +
> +       status = "okay";
> +};
> +
> +&gpio0 {
> +       gpio-line-names =
> +               /* A0-A7 */     "","","","","","","","",
> +               /* B0-B7 */     "","","","","","","","",
> +               /* C0-C7 */     "","","","","","","","",
> +               /* D0-D7 */     "","","","","","","","",
> +               /* E0-E7 */     "","","","","","","","",
> +               /* F0-F7 */     "","","","","","","","",
> +               /* G0-G7 */     "","","","","","","","",
> +               /* H0-H7 */     "","","","","","","","",
> +               /* I0-I7 */     "","","","","","","","",
> +               /* J0-J7 */     "","","","","","","","",
> +               /* K0-K7 */     "","","","","","","","",
> +               /* L0-L7 */     "","","","","","","","",
> +               /* M0-M7 */     "","","","","","","","",
> +               /* N0-N7 */     "","","","","","","","",
> +               /* O0-O7 */     "","","","","","","","",
> +               /* P0-P7 */     "button-reset-n","control-reset-n",
> +               "button-power-n","control-power-n",
> +               "button-nmi-n","control-nmi-n",
> +               "","",
> +               /* Q0-Q7 */     "","","","","","","","",
> +               /* R0-R7 */     "","","","","","","","",
> +               /* S0-S7 */     "","","","","","","","",
> +               /* T0-T7 */     "","","","","","","","",
> +               /* U0-U7 */     "","","","","","","","",
> +               /* V0-V7 */     "","","","","","","","",
> +               /* W0-W7 */     "","","","","","","","",
> +               /* X0-X7 */     "","","","","","","","",
> +               /* Y0-Y7 */     "","","","","","","","",
> +               /* Z0-Z7 */     "","","","","","","","";
> +};
> +
> +&i2c7 {
> +       status = "okay";
> +
> +       eeprom@57 {
> +               compatible = "atmel,24c128";
> +               reg = <0x57>;
> +               pagesize = <16>;
> +
> +               nvmem-layout {
> +                       compatible = "fixed-layout";
> +                       #address-cells = <1>;
> +                       #size-cells = <1>;
> +
> +                       eth0_macaddress: macaddress@3f80 {
> +                               reg = <0x3f80 6>;
> +                       };
> +               };
> +       };
> +};
> +
> +&mac0 {
> +       nvmem-cells = <&eth0_macaddress>;
> +       nvmem-cell-names = "mac-address";
> +       phy-handle = <&ethphy0>;
> +       phy-mode = "rgmii-id";
> +       pinctrl-0 = <&pinctrl_rgmii1_default>;
> +       pinctrl-names = "default";
> +
> +       status = "okay";
> +};
> +
> +&mdio0 {
> +       status = "okay";
> +
> +       ethphy0: ethernet-phy@0 {
> +               compatible = "ethernet-phy-ieee802.3-c22";
> +               reg = <0>;
> +       };
> +};
> +
> +&uart5 {
> +       status = "okay";
> +};
> --
> 2.47.3
>

Re: [PATCH v8 2/2] ARM: dts: aspeed: Add ASRock Rack B650D4U BMC

[Andrew Lunn]

On Mon, Oct 26, 2026 at 10:04:05AM +0530, KAVYA M M wrote:
> Hello team,
> I am new to OpenBMC. I want to development image for the machine using the
> OpenBMC/Yocto build system, available firmware information, and readings from
> the existing BMC.

FYI

It is considered bad practice to hijack some other thread for
unrelated matters. Please start a new thread.

Also, don't top post. Netiquette rules apply to mailing lists.

      Andrew