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Message-ID: <20250919185621.6647-3-tan@siewert.io>
Date: Fri, 19 Sep 2025 20:56:18 +0200
From: Tan Siewert <tan@...wert.io>
To: Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Joel Stanley <joel@....id.au>,
Andrew Jeffery <andrew@...econstruct.com.au>
Cc: Tan Siewert <tan@...wert.io>,
devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-aspeed@...ts.ozlabs.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] ARM: dts: aspeed: add asrock x470d4u bmc
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 keep the complexity low with the BMC SPI, use the 32MB layout
regardless of the used SPI or mainboard flavor.
Signed-off-by: Tan Siewert <tan@...wert.io>
---
arch/arm/boot/dts/aspeed/Makefile | 1 +
.../dts/aspeed/aspeed-bmc-asrock-x470d4u.dts | 345 ++++++++++++++++++
2 files changed, 346 insertions(+)
create mode 100644 arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-x470d4u.dts
diff --git a/arch/arm/boot/dts/aspeed/Makefile b/arch/arm/boot/dts/aspeed/Makefile
index aba7451ab749..fae97b5183e5 100644
--- a/arch/arm/boot/dts/aspeed/Makefile
+++ b/arch/arm/boot/dts/aspeed/Makefile
@@ -13,6 +13,7 @@ dtb-$(CONFIG_ARCH_ASPEED) += \
aspeed-bmc-asrock-e3c256d4i.dtb \
aspeed-bmc-asrock-romed8hm3.dtb \
aspeed-bmc-asrock-spc621d8hm3.dtb \
+ aspeed-bmc-asrock-x470d4u.dtb \
aspeed-bmc-asrock-x570d4u.dtb \
aspeed-bmc-asus-x4tf.dtb \
aspeed-bmc-bytedance-g220a.dtb \
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..bae2b521f708
--- /dev/null
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-asrock-x470d4u.dts
@@ -0,0 +1,345 @@
+// 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>
+
+/ {
+ model = "Asrock Rack X470D4U-series BMC";
+ compatible = "asrock,x470d4u-bmc", "aspeed,ast2500";
+
+ 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";
+
+ heartbeat {
+ /* led-heartbeat-n */
+ gpios = <&gpio ASPEED_GPIO(H, 6) GPIO_ACTIVE_LOW>;
+ linux,default-trigger = "timer";
+ };
+
+ systemfault {
+ /* led-fault-n */
+ gpios = <&gpio ASPEED_GPIO(Z, 2) GPIO_ACTIVE_LOW>;
+ panic-indicator;
+ };
+
+ identify {
+ /* led-identify-n */
+ gpios = <&gpio ASPEED_GPIO(D, 6) GPIO_ACTIVE_LOW>;
+ };
+ };
+
+ memory@...00000 {
+ reg = <0x80000000 0x20000000>;
+ };
+
+ reserved-memory {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ pci_memory: region@...00000 {
+ no-map;
+ reg = <0x9a000000 0x00010000>; /* 64K */
+ };
+
+ video_engine_memory: jpegbuffer {
+ size = <0x02800000>; /* 40M */
+ alignment = <0x01000000>;
+ compatible = "shared-dma-pool";
+ reusable;
+ };
+
+ gfx_memory: framebuffer {
+ size = <0x01000000>;
+ alignment = <0x01000000>;
+ compatible = "shared-dma-pool";
+ reusable;
+ };
+ };
+};
+
+&adc {
+ status = "okay";
+ pinctrl-names = "default";
+ 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 */
+};
+
+&ehci1 {
+ status = "okay";
+};
+
+/*
+ * Although some board flavors have a 64MB SPI, use the
+ * 32MB SPI layout to be compatible with all boards.
+ */
+&fmc {
+ status = "okay";
+ flash@0 {
+ status = "okay";
+ label = "bmc";
+ m25p,fast-read;
+ spi-max-frequency = <10000000>;
+#include "openbmc-flash-layout.dtsi"
+ };
+};
+
+&gfx {
+ status = "okay";
+};
+
+&gpio {
+ status = "okay";
+ 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 */ "", "", "", "", "", "", "", "";
+};
+
+&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 = "st,24c128", "atmel,24c128";
+ reg = <0x57>;
+ pagesize = <16>;
+
+ nvmem-layout {
+ compatible = "fixed-layout";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ eth0_macaddress: macaddress@...0 {
+ reg = <0x3f80 6>;
+ };
+
+ eth1_macaddress: macaddress@...8 {
+ reg = <0x3f88 6>;
+ };
+ };
+ };
+};
+
+&i2c8 {
+ /* SMBus on intelligent platform management bus header (IPMB_1) */
+ status = "okay";
+};
+
+&kcs3 {
+ status = "okay";
+ aspeed,lpc-io-reg = <0xca2>;
+};
+
+&lpc_ctrl {
+ status = "okay";
+};
+
+&lpc_snoop {
+ status = "okay";
+ snoop-ports = <0x80>;
+};
+
+&mac0 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_rgmii1_default &pinctrl_mdio1_default>;
+
+ nvmem-cells = <ð0_macaddress>;
+ nvmem-cell-names = "mac-address";
+};
+
+&mac1 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_rmii2_default &pinctrl_mdio2_default>;
+ use-ncsi;
+
+ nvmem-cells = <ð1_macaddress>;
+ nvmem-cell-names = "mac-address";
+};
+
+&pwm_tacho {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_pwm0_default
+ &pinctrl_pwm1_default
+ &pinctrl_pwm2_default
+ &pinctrl_pwm3_default
+ &pinctrl_pwm4_default
+ &pinctrl_pwm5_default>;
+
+ 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 {
+ status = "okay";
+ memory-region = <&pci_memory>;
+};
+
+&spi1 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_spi1_default>;
+ flash@0 {
+ status = "okay";
+ label = "bios";
+ m25p,fast-read;
+ /* Frequency extracted from original ROM */
+ spi-max-frequency = <24000000>; /* 24 MHz */
+ };
+};
+
+&uhci {
+ status = "okay";
+};
+
+&vhub {
+ status = "okay";
+};
+
+&video {
+ status = "okay";
+ memory-region = <&video_engine_memory>;
+};
+
+&vuart {
+ status = "okay";
+ aspeed,lpc-io-reg = <0x2f8>;
+ aspeed,lpc-interrupts = <3 IRQ_TYPE_LEVEL_HIGH>;
+};
+
+&uart5 {
+ status = "okay";
+};
--
2.50.1
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