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Tue, 22 Sep 2026 05:37:31 -0700 (PDT) From: Prasanth Kumar Padarthi To: joel@jms.id.au Cc: andrew@codeconstruct.com.au, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, ryan_chen@aspeedtech.com, billy_tsai@aspeedtech.com, andrew@lunn.ch, tan.siewert@9elements.com, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org, Prasanth Kumar Padarthi Subject: [PATCH v7 2/2] ARM: dts: aspeed: Add ASRock Rack B650D4U BMC Date: Tue, 22 Sep 2026 18:05:00 +0530 Message-ID: X-Mailer: git-send-email 2.47.3 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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. Signed-off-by: Prasanth Kumar Padarthi --- 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 = <ð0_macaddress>; + nvmem-cell-names = "mac-address"; + phy-handle = <ðphy0>; + 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