* [PATCH v4 2/2] ARM: dts: aspeed: add asrock x470d4u bmc
2026-08-16 11:05 [PATCH v4 0/2] ARM: dts: aspeed: ASRock Rack X470D4U BMC support Tan Siewert
2026-08-16 11:05 ` [PATCH v4 1/2] dt-bindings: arm: aspeed: add ASRock X470D4U BMC Tan Siewert
@ 2026-08-16 11:05 ` Tan Siewert
1 sibling, 0 replies; 4+ messages in thread
From: Tan Siewert @ 2026-08-16 11:05 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Joel Stanley,
Andrew Jeffery, Zev Weiss
Cc: Tan Siewert, devicetree, linux-arm-kernel, linux-aspeed,
linux-kernel
The ASRock Rack X470D4U X470D4U is a single-socket X470-based microATX
motherboard for Ryzen processors with an AST2500 BMC and either 32MB or
64MB SPI flash.
This mainboard exists in three known "flavors" which only differ in the
used host NIC, the BMC SPI size and some parts that may be un-populated.
To allow the use of the full SPI flash, add two trees, one of which has
the 32M layout with the base config, and a 64M tree that includes the
base tree.
Signed-off-by: Tan Siewert <tan@siewert.io>
---
arch/arm/boot/dts/aspeed/Makefile | 2 +
.../aspeed/aspeed-bmc-asrock-x470d4u-data64.dts | 15 +
.../boot/dts/aspeed/aspeed-bmc-asrock-x470d4u.dts | 381 +++++++++++++++++++++
3 files changed, 398 insertions(+)
diff --git a/arch/arm/boot/dts/aspeed/Makefile b/arch/arm/boot/dts/aspeed/Makefile
index 6b68671f9379..e27d33e85fb2 100644
--- a/arch/arm/boot/dts/aspeed/Makefile
+++ b/arch/arm/boot/dts/aspeed/Makefile
@@ -15,6 +15,8 @@ dtb-$(CONFIG_ARCH_ASPEED) += \
aspeed-bmc-asrock-paul-ipmi-card.dtb \
aspeed-bmc-asrock-romed8hm3.dtb \
aspeed-bmc-asrock-spc621d8hm3.dtb \
+ aspeed-bmc-asrock-x470d4u.dtb \
+ aspeed-bmc-asrock-x470d4u-data64.dtb \
aspeed-bmc-asrock-x570d4u.dtb \
aspeed-bmc-asus-kommando-ipmi-card.dtb \
aspeed-bmc-asus-x4tf.dtb \
diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-x470d4u-data64.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-x470d4u-data64.dts
new file mode 100644
index 000000000000..fb7102db1004
--- /dev/null
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-x470d4u-data64.dts
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include "aspeed-bmc-asrock-x470d4u.dts"
+
+/ {
+ compatible = "asrock,x470d4u-data64-bmc", "aspeed,ast2500";
+ model = "ASRock Rack X470D4U-series BMC (64MB flash)";
+};
+
+&fmc {
+ flash@0 {
+ /delete-node/partitions;
+#include "openbmc-flash-layout-64.dtsi"
+ };
+};
diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-x470d4u.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-x470d4u.dts
new file mode 100644
index 000000000000..73bda64e1fa8
--- /dev/null
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-x470d4u.dts
@@ -0,0 +1,381 @@
+// SPDX-License-Identifier: GPL-2.0+
+/dts-v1/;
+
+#include "aspeed-g5.dtsi"
+#include <dt-bindings/gpio/aspeed-gpio.h>
+#include <dt-bindings/leds/common.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/ {
+ compatible = "asrock,x470d4u-bmc", "aspeed,ast2500";
+ model = "ASRock Rack X470D4U-series BMC";
+
+ aliases {
+ serial4 = &uart5;
+ };
+
+ chosen {
+ stdout-path = &uart5;
+ };
+
+ iio-hwmon {
+ compatible = "iio-hwmon";
+ io-channels = <&adc 0>, <&adc 1>, <&adc 2>, <&adc 3>, <&adc 4>,
+ <&adc 5>, <&adc 6>, <&adc 7>, <&adc 8>, <&adc 9>,
+ <&adc 10>, <&adc 11>, <&adc 12>;
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ led-heartbeat {
+ /* led-heartbeat-n */
+ gpios = <&gpio ASPEED_GPIO(H, 6) GPIO_ACTIVE_LOW>;
+ label = "platform:heartbeat";
+ linux,default-trigger = "timer";
+ };
+
+ led-identify {
+ /* led-identify-n */
+ gpios = <&gpio ASPEED_GPIO(D, 6) GPIO_ACTIVE_LOW>;
+ label = "platform:identify";
+ };
+
+ led-systemfault {
+ /* led-fault-n */
+ gpios = <&gpio ASPEED_GPIO(Z, 2) GPIO_ACTIVE_LOW>;
+ label = "platform:systemfault";
+ panic-indicator;
+ };
+ };
+
+ memory@80000000 {
+ reg = <0x80000000 0x20000000>;
+ };
+
+ reserved-memory {
+ ranges;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ pci_memory: region@9a000000 {
+ reg = <0x9a000000 0x00010000>; /* 64K */
+ no-map;
+ };
+
+ gfx_memory: framebuffer {
+ compatible = "shared-dma-pool";
+ alignment = <0x01000000>;
+ reusable;
+ size = <0x01000000>;
+ };
+
+ video_engine_memory: jpegbuffer {
+ compatible = "shared-dma-pool";
+ alignment = <0x01000000>;
+ reusable;
+ size = <0x02800000>; /* 40M */
+ };
+ };
+};
+
+&adc {
+ pinctrl-0 = <&pinctrl_adc0_default /* 3VSB */
+ &pinctrl_adc1_default /* 5VSB */
+ &pinctrl_adc2_default /* VCPU */
+ &pinctrl_adc3_default /* VSOC */
+ &pinctrl_adc4_default /* VCCM */
+ &pinctrl_adc5_default /* APU-VDDP */
+ &pinctrl_adc6_default /* 1V05-PROM-S5 */
+ &pinctrl_adc7_default /* 2V5-PROM */
+ &pinctrl_adc8_default /* 1V05-PROM-RUN */
+ &pinctrl_adc9_default /* VBAT */
+ &pinctrl_adc10_default /* 3V */
+ &pinctrl_adc11_default /* 5V */
+ &pinctrl_adc12_default>; /* 12V */
+ pinctrl-names = "default";
+
+ status = "okay";
+};
+
+&ehci1 {
+ status = "okay";
+};
+
+&fmc {
+ status = "okay";
+
+ flash@0 {
+ label = "bmc";
+ spi-max-frequency = <10000000>;
+ m25p,fast-read;
+
+ status = "okay";
+
+#include "openbmc-flash-layout.dtsi"
+ };
+};
+
+&gfx {
+ memory-region = <&gfx_memory>;
+
+ status = "okay";
+};
+
+&gpio {
+ gpio-line-names =
+ /* A */ "input-locatorled-n", "", "", "", "", "", "", "",
+ /* B */ "input-bios-post-cmplt-n", "", "", "", "", "", "", "",
+ /* C */ "", "", "", "", "", "", "", "",
+ /* D */ "button-power-n", "control-power-n", "button-reset-n",
+ "control-reset-n", "", "", "", "",
+ /* E */ "", "", "", "", "", "", "", "",
+ /* F */ "", "", "", "", "", "", "", "",
+ /* G */ "output-hwm-vbat-enable", "input-id0-n", "input-id1-n",
+ "input-id2-n", "input-aux-smb-alert-n", "",
+ "input-psu-smb-alert-n", "",
+ /* H */ "", "", "", "", "input-mfg-mode-n", "",
+ "led-heartbeat-n", "input-case-open-n",
+ /* I */ "", "", "", "", "", "", "", "",
+ /* J */ "output-bmc-ready-n", "output-bios-cs-n", "", "", "", "",
+ "", "",
+ /* K */ "", "", "", "", "", "", "", "",
+ /* L */ "", "", "", "", "", "", "", "",
+ /* M */ "", "", "", "", "", "", "", "",
+ /* N */ "", "", "", "", "", "", "", "",
+ /* O */ "", "", "", "", "", "", "", "",
+ /* P */ "", "", "", "", "", "", "", "",
+ /* Q */ "", "", "", "", "input-bmc-smb-present-n", "", "",
+ "input-pcie-wake-n",
+ /* R */ "", "", "", "", "", "", "", "",
+ /* S */ "input-bmc-pchhot-n", "", "", "", "", "", "", "",
+ /* T */ "", "", "", "", "", "", "", "",
+ /* U */ "", "", "", "", "", "", "", "",
+ /* V */ "", "", "", "", "", "", "", "",
+ /* W */ "", "", "", "", "", "", "", "",
+ /* X */ "", "", "", "", "", "", "", "",
+ /* Y */ "input-sleep-s3-n", "input-sleep-s5-n", "", "", "", "",
+ "", "",
+ /* Z */ "", "", "led-fault-n", "output-bmc-throttle-n", "", "",
+ "", "",
+ /* AA */ "input-cpu1-thermtrip-latch-n", "",
+ "input-cpu1-prochot-n", "", "", "", "", "",
+ /* AB */ "", "input-power-good", "", "hard-power-off", "", "", "", "",
+ /* AC */ "", "", "", "", "", "", "", "";
+
+ bmc-ready-hog {
+ gpio-hog;
+ gpios = <ASPEED_GPIO(J, 0) GPIO_ACTIVE_LOW>;
+ output-high;
+ };
+};
+
+&i2c0 {
+ /* SMBus on auxiliary panel header (AUX_PANEL1) */
+ status = "okay";
+};
+
+&i2c1 {
+ /* Hardware monitoring SMBus */
+ status = "okay";
+
+ w83773g@4c {
+ compatible = "nuvoton,w83773g";
+ reg = <0x4c>;
+ };
+};
+
+&i2c2 {
+ /* PSU SMBus (PSU_SMB1) */
+ status = "okay";
+};
+
+&i2c3 {
+ status = "okay";
+};
+
+&i2c4 {
+ status = "okay";
+};
+
+&i2c6 {
+ /* SMBus on BMC connector (BMC_SMB_1) */
+ status = "okay";
+};
+
+&i2c7 {
+ /* FRU EEPROM */
+ 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>;
+ };
+
+ eth1_macaddress: macaddress@3f88 {
+ reg = <0x3f88 6>;
+ };
+ };
+ };
+};
+
+&kcs3 {
+ aspeed,lpc-io-reg = <0xca2>;
+
+ status = "okay";
+};
+
+&lpc_ctrl {
+ status = "okay";
+};
+
+&lpc_snoop {
+ snoop-ports = <0x80>;
+
+ status = "okay";
+};
+
+&mac0 {
+ nvmem-cells = <ð0_macaddress>;
+ nvmem-cell-names = "mac-address";
+
+ pinctrl-0 = <&pinctrl_rgmii1_default &pinctrl_mdio1_default>;
+ pinctrl-names = "default";
+
+ status = "okay";
+};
+
+&mac1 {
+ nvmem-cells = <ð1_macaddress>;
+ nvmem-cell-names = "mac-address";
+
+ pinctrl-0 = <&pinctrl_rmii2_default>;
+ pinctrl-names = "default";
+ use-ncsi;
+
+ status = "okay";
+};
+
+&pwm_tacho {
+ pinctrl-0 = <&pinctrl_pwm0_default
+ &pinctrl_pwm1_default
+ &pinctrl_pwm2_default
+ &pinctrl_pwm3_default
+ &pinctrl_pwm4_default
+ &pinctrl_pwm5_default>;
+ pinctrl-names = "default";
+
+ status = "okay";
+
+ fan@0 {
+ /* FAN1 (4-pin) */
+ reg = <0x00>;
+ aspeed,fan-tach-ch = /bits/ 8 <0x00>;
+ };
+
+ fan@1 {
+ /* FAN2 (4-pin) */
+ reg = <0x01>;
+ aspeed,fan-tach-ch = /bits/ 8 <0x01>;
+ };
+
+ fan@2 {
+ /* FAN3 (4-pin) */
+ reg = <0x02>;
+ aspeed,fan-tach-ch = /bits/ 8 <0x02>;
+ };
+
+ fan@3 {
+ /* FAN4 (6-pin) */
+ reg = <0x03>;
+ aspeed,fan-tach-ch = /bits/ 8 <0x03 0x0b>;
+ };
+
+ fan@4 {
+ /* FAN5 (6-pin) */
+ reg = <0x04>;
+ aspeed,fan-tach-ch = /bits/ 8 <0x04 0x0d>;
+ };
+
+ fan@5 {
+ /* FAN6 (6-pin) */
+ reg = <0x05>;
+ aspeed,fan-tach-ch = /bits/ 8 <0x05 0x0e>;
+ };
+};
+
+&p2a {
+ memory-region = <&pci_memory>;
+
+ status = "okay";
+};
+
+&spi1 {
+ pinctrl-0 = <&pinctrl_spi1_default>;
+ pinctrl-names = "default";
+
+ status = "okay";
+
+ flash@0 {
+ label = "bios";
+ /* Frequency extracted from original ROM */
+ spi-max-frequency = <24000000>; /* 24 MHz */
+ m25p,fast-read;
+
+ status = "okay";
+ };
+};
+
+&uhci {
+ status = "okay";
+};
+
+&vhub {
+ status = "okay";
+};
+
+&video {
+ memory-region = <&video_engine_memory>;
+
+ status = "okay";
+};
+
+&vuart {
+ aspeed,lpc-interrupts = <3 IRQ_TYPE_LEVEL_HIGH>;
+ aspeed,lpc-io-reg = <0x2f8>;
+
+ status = "okay";
+};
+
+&uart1 {
+ status = "okay";
+};
+
+&uart2 {
+ status = "okay";
+};
+
+&uart3 {
+ status = "okay";
+};
+
+&uart4 {
+ status = "okay";
+};
+
+&uart5 {
+ status = "okay";
+};
+
+&uart_routing {
+ status = "okay";
+};
--
2.54.0
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