[PATCH v7 3/5] arm64: dts: aspeed: Add initial AST27xx SoC device tree
Ryan Chen
ryan_chen at aspeedtech.com
Fri Nov 7 16:56:27 AEDT 2025
Add initial device tree support for the ASPEED AST27xx family, the
8th-generation Baseboard Management Controller (BMC) SoCs.
AST27xx SOC Family
- https://www.aspeedtech.com/server_ast2700/
- https://www.aspeedtech.com/server_ast2720/
- https://www.aspeedtech.com/server_ast2750/
The AST27xx features a dual-SoC architecture consisting of two ties,
referred to as SoC0 and SoC1 - interconnected through an internal
property bus. Both SoCs share the same address decoding scheme,
while each maintains independent clock and reset domains.
- SoC0 (CPU die): contains a dual-core Cortex-A35 cluster and two
Cortex-M4 cores, along with high-speed peripherals.
- SoC1 (I/O die): includes the BootMCU (responsible for system
boot) and its own clock/reset domains low-speed peripherals.
The device tree describes the SoC0 and SoC1 domains and their peripheral
layouts.
Signed-off-by: Ryan Chen <ryan_chen at aspeedtech.com>
---
arch/arm64/boot/dts/aspeed/aspeed-g7-a35.dtsi | 148 ++++++++
.../boot/dts/aspeed/aspeed-g7-common.dtsi | 345 ++++++++++++++++++
2 files changed, 493 insertions(+)
create mode 100644 arch/arm64/boot/dts/aspeed/aspeed-g7-a35.dtsi
create mode 100644 arch/arm64/boot/dts/aspeed/aspeed-g7-common.dtsi
diff --git a/arch/arm64/boot/dts/aspeed/aspeed-g7-a35.dtsi b/arch/arm64/boot/dts/aspeed/aspeed-g7-a35.dtsi
new file mode 100644
index 000000000000..d43e072ba6df
--- /dev/null
+++ b/arch/arm64/boot/dts/aspeed/aspeed-g7-a35.dtsi
@@ -0,0 +1,148 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+ compatible = "aspeed,ast2700";
+ interrupt-parent = <&gic>;
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ cpus {
+ #address-cells = <2>;
+ #size-cells = <0>;
+
+ cpu0: cpu at 0 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a35";
+ reg = <0x0 0x0>;
+ enable-method = "psci";
+ i-cache-size = <0x8000>;
+ i-cache-line-size = <64>;
+ i-cache-sets = <256>;
+ d-cache-size = <0x8000>;
+ d-cache-line-size = <64>;
+ d-cache-sets = <128>;
+ next-level-cache = <&l2>;
+ };
+
+ cpu1: cpu at 1 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a35";
+ reg = <0x0 0x1>;
+ enable-method = "psci";
+ i-cache-size = <0x8000>;
+ i-cache-line-size = <64>;
+ i-cache-sets = <256>;
+ d-cache-size = <0x8000>;
+ d-cache-line-size = <64>;
+ d-cache-sets = <128>;
+ next-level-cache = <&l2>;
+ };
+
+ cpu2: cpu at 2 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a35";
+ reg = <0x0 0x2>;
+ enable-method = "psci";
+ i-cache-size = <0x8000>;
+ i-cache-line-size = <64>;
+ i-cache-sets = <256>;
+ d-cache-size = <0x8000>;
+ d-cache-line-size = <64>;
+ d-cache-sets = <128>;
+ next-level-cache = <&l2>;
+ };
+
+ cpu3: cpu at 3 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a35";
+ reg = <0x0 0x3>;
+ enable-method = "psci";
+ i-cache-size = <0x8000>;
+ i-cache-line-size = <64>;
+ i-cache-sets = <256>;
+ d-cache-size = <0x8000>;
+ d-cache-line-size = <64>;
+ d-cache-sets = <128>;
+ next-level-cache = <&l2>;
+ };
+
+ l2: l2-cache0 {
+ compatible = "cache";
+ cache-level = <2>;
+ cache-unified;
+ cache-size = <0x80000>;
+ cache-line-size = <64>;
+ cache-sets = <1024>;
+ };
+ };
+
+ firmware {
+ optee: optee {
+ compatible = "linaro,optee-tz";
+ method = "smc";
+ };
+
+ psci {
+ compatible = "arm,psci-1.0";
+ method = "smc";
+ };
+ };
+
+ reserved-memory {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ atf: trusted-firmware-a at 430000000 {
+ reg = <0x4 0x30000000 0x0 0x80000>;
+ no-map;
+ };
+
+ optee_core: optee-core at 430080000 {
+ reg = <0x4 0x30080000 0x0 0x1000000>;
+ no-map;
+ };
+ };
+
+ arm-pmu {
+ compatible = "arm,cortex-a35-pmu";
+ interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_HIGH>;
+ };
+
+ timer {
+ compatible = "arm,armv8-timer";
+ interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_LOW>,
+ <GIC_PPI 14 IRQ_TYPE_LEVEL_LOW>,
+ <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW>,
+ <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>;
+ arm,cpu-registers-not-fw-configured;
+ always-on;
+ };
+
+ gic: interrupt-controller at 12200000 {
+ compatible = "arm,gic-v3";
+ reg = <0 0x12200000 0 0x10000>, /* GICD */
+ <0 0x12280000 0 0x80000>, /* GICR */
+ <0 0x40440000 0 0x1000>; /* GICC */
+ interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
+ #interrupt-cells = <3>;
+ interrupt-controller;
+ };
+
+ soc0: bus at 10000000 {
+ compatible = "simple-bus";
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges = <0x0 0x10000000 0x0 0x10000000 0x0 0x4000000>;
+ };
+
+ soc1: bus at 14000000 {
+ compatible = "simple-bus";
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges = <0x0 0x14000000 0x0 0x14000000 0x0 0xD00000>;
+ };
+};
+
+#include "aspeed-g7-common.dtsi"
diff --git a/arch/arm64/boot/dts/aspeed/aspeed-g7-common.dtsi b/arch/arm64/boot/dts/aspeed/aspeed-g7-common.dtsi
new file mode 100644
index 000000000000..e11f41c66f6c
--- /dev/null
+++ b/arch/arm64/boot/dts/aspeed/aspeed-g7-common.dtsi
@@ -0,0 +1,345 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#include <dt-bindings/clock/aspeed,ast2700-scu.h>
+#include <dt-bindings/reset/aspeed,ast2700-scu.h>
+#include <dt-bindings/interrupt-controller/aspeed-scu-ic.h>
+
+&soc0 {
+ sram0: sram at 10000000 {
+ compatible = "mmio-sram";
+ reg = <0x0 0x10000000 0x0 0x20000>;
+ ranges = <0x0 0x0 0x10000000 0x20000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ soc0-sram at 0 {
+ reg = <0x0 0x20000>;
+ export;
+ };
+ };
+
+ intc0_11: interrupt-controller at 12101b00 {
+ compatible = "aspeed,ast2700-intc-ic";
+ reg = <0x0 0x12101b00 0x0 0x10>;
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ interrupts = <GIC_SPI 192 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 193 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 194 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 195 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 196 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 197 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 198 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 199 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 200 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 201 IRQ_TYPE_LEVEL_HIGH>;
+ };
+
+ syscon0: syscon at 12c02000 {
+ compatible = "aspeed,ast2700-scu0", "syscon", "simple-mfd";
+ reg = <0x0 0x12c02000 0x0 0x1000>;
+ ranges = <0x0 0x0 0x12c02000 0x1000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ #clock-cells = <1>;
+ #reset-cells = <1>;
+
+ silicon-id at 0 {
+ compatible = "aspeed,ast2700-silicon-id", "aspeed,silicon-id";
+ reg = <0x0 0x4>;
+ };
+
+ scu_ic0: interrupt-controller at 1d0 {
+ compatible = "aspeed,ast2700-scu-ic0";
+ reg = <0x1d0 0xc>;
+ #interrupt-cells = <1>;
+ interrupts = <GIC_SPI 97 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-controller;
+ };
+
+ scu_ic1: interrupt-controller at 1e0 {
+ compatible = "aspeed,ast2700-scu-ic1";
+ reg = <0x1e0 0xc>;
+ #interrupt-cells = <1>;
+ interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-controller;
+ };
+ };
+
+ gpio0: gpio at 12c11000 {
+ #gpio-cells = <2>;
+ gpio-controller;
+ compatible = "aspeed,ast2700-gpio";
+ reg = <0x0 0x12c11000 0x0 0x1000>;
+ interrupts = <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
+ ngpios = <12>;
+ clocks = <&syscon0 SCU0_CLK_APB>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ uart4: serial at 12c1a000 {
+ compatible = "ns16550a";
+ reg = <0x0 0x12c1a000 0x0 0x1000>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ clocks = <&syscon0 SCU0_CLK_GATE_UART4CLK>;
+ interrupts = <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>;
+ no-loopback-test;
+ status = "disabled";
+ };
+};
+
+&soc1 {
+ sram1: sram at 14b80000 {
+ compatible = "mmio-sram";
+ reg = <0x0 0x14b80000 0x0 0x40000>;
+ ranges = <0x0 0x0 0x14b80000 0x40000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ soc1-sram at 0 {
+ reg = <0x0 0x40000>;
+ export;
+ };
+ };
+
+ syscon1: syscon at 14c02000 {
+ compatible = "aspeed,ast2700-scu1", "syscon", "simple-mfd";
+ reg = <0x0 0x14c02000 0x0 0x1000>;
+ ranges = <0x0 0x0 0x14c02000 0x1000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ #clock-cells = <1>;
+ #reset-cells = <1>;
+
+ scu_ic2: interrupt-controller at 100 {
+ compatible = "aspeed,ast2700-scu-ic2";
+ reg = <0x100 0x8>;
+ #interrupt-cells = <1>;
+ interrupts-extended = <&intc1_5 0>;
+ interrupt-controller;
+ };
+
+ scu_ic3: interrupt-controller at 108 {
+ compatible = "aspeed,ast2700-scu-ic3";
+ reg = <0x108 0x8>;
+ #interrupt-cells = <1>;
+ interrupts-extended = <&intc1_5 26>;
+ interrupt-controller;
+ };
+ };
+
+ gpio1: gpio at 14c0b000 {
+ #gpio-cells = <2>;
+ gpio-controller;
+ compatible = "aspeed,ast2700-gpio";
+ reg = <0x0 0x14c0b000 0x0 0x1000>;
+ interrupts-extended = <&intc1_2 18>;
+ ngpios = <216>;
+ clocks = <&syscon1 SCU1_CLK_AHB>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ intc1_0: interrupt-controller at 14c18100 {
+ compatible = "aspeed,ast2700-intc-ic";
+ reg = <0x0 0x14c18100 0x0 0x10>;
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ interrupts-extended = <&intc0_11 0>;
+ };
+
+ intc1_1: interrupt-controller at 14c18110 {
+ compatible = "aspeed,ast2700-intc-ic";
+ reg = <0x0 0x14c18110 0x0 0x10>;
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ interrupts-extended = <&intc0_11 1>;
+ };
+
+ intc1_2: interrupt-controller at 14c18120 {
+ compatible = "aspeed,ast2700-intc-ic";
+ reg = <0x0 0x14c18120 0x0 0x10>;
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ interrupts-extended = <&intc0_11 2>;
+ };
+
+ intc1_3: interrupt-controller at 14c18130 {
+ compatible = "aspeed,ast2700-intc-ic";
+ reg = <0x0 0x14c18130 0x0 0x10>;
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ interrupts-extended = <&intc0_11 3>;
+ };
+
+ intc1_4: interrupt-controller at 14c18140 {
+ compatible = "aspeed,ast2700-intc-ic";
+ reg = <0x0 0x14c18140 0x0 0x10>;
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ interrupts-extended = <&intc0_11 4>;
+ };
+
+ intc1_5: interrupt-controller at 14c18150 {
+ compatible = "aspeed,ast2700-intc-ic";
+ reg = <0x0 0x14c18150 0x0 0x10>;
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ interrupts-extended = <&intc0_11 5>;
+ };
+
+ uart0: serial at 14c33000 {
+ compatible = "ns16550a";
+ reg = <0x0 0x14c33000 0x0 0x100>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ clocks = <&syscon1 SCU1_CLK_GATE_UART0CLK>;
+ interrupts-extended = <&intc1_4 7>;
+ no-loopback-test;
+ status = "disabled";
+ };
+
+ uart1: serial at 14c33100 {
+ compatible = "ns16550a";
+ reg = <0x0 0x14c33100 0x0 0x100>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ clocks = <&syscon1 SCU1_CLK_GATE_UART1CLK>;
+ interrupts-extended = <&intc1_4 8>;
+ no-loopback-test;
+ status = "disabled";
+ };
+
+ uart2: serial at 14c33200 {
+ compatible = "ns16550a";
+ reg = <0x0 0x14c33200 0x0 0x100>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ clocks = <&syscon1 SCU1_CLK_GATE_UART2CLK>;
+ interrupts-extended = <&intc1_4 9>;
+ no-loopback-test;
+ status = "disabled";
+ };
+
+ uart3: serial at 14c33300 {
+ compatible = "ns16550a";
+ reg = <0x0 0x14c33300 0x0 0x100>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ clocks = <&syscon1 SCU1_CLK_GATE_UART3CLK>;
+ interrupts-extended = <&intc1_4 10>;
+ no-loopback-test;
+ status = "disabled";
+ };
+
+ uart5: serial at 14c33400 {
+ compatible = "ns16550a";
+ reg = <0x0 0x14c33400 0x0 0x100>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ clocks = <&syscon1 SCU1_CLK_GATE_UART5CLK>;
+ interrupts-extended = <&intc1_4 11>;
+ no-loopback-test;
+ status = "disabled";
+ };
+
+ uart6: serial at 14c33500 {
+ compatible = "ns16550a";
+ reg = <0x0 0x14c33500 0x0 0x100>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ clocks = <&syscon1 SCU1_CLK_GATE_UART6CLK>;
+ interrupts-extended = <&intc1_4 12>;
+ no-loopback-test;
+ status = "disabled";
+ };
+
+ uart7: serial at 14c33600 {
+ compatible = "ns16550a";
+ reg = <0x0 0x14c33600 0x0 0x100>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ clocks = <&syscon1 SCU1_CLK_GATE_UART7CLK>;
+ interrupts-extended = <&intc1_4 13>;
+ no-loopback-test;
+ status = "disabled";
+ };
+
+ uart8: serial at 14c33700 {
+ compatible = "ns16550a";
+ reg = <0x0 0x14c33700 0x0 0x100>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ clocks = <&syscon1 SCU1_CLK_GATE_UART8CLK>;
+ interrupts-extended = <&intc1_4 14>;
+ no-loopback-test;
+ status = "disabled";
+ };
+
+ uart9: serial at 14c33800 {
+ compatible = "ns16550a";
+ reg = <0x0 0x14c33800 0x0 0x100>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ clocks = <&syscon1 SCU1_CLK_GATE_UART9CLK>;
+ interrupts-extended = <&intc1_4 15>;
+ no-loopback-test;
+ status = "disabled";
+ };
+
+ uart10: serial at 14c33900 {
+ compatible = "ns16550a";
+ reg = <0x0 0x14c33900 0x0 0x100>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ clocks = <&syscon1 SCU1_CLK_GATE_UART10CLK>;
+ interrupts-extended = <&intc1_4 16>;
+ no-loopback-test;
+ status = "disabled";
+ };
+
+ uart11: serial at 14c33a00 {
+ compatible = "ns16550a";
+ reg = <0x0 0x14c33a00 0x0 0x100>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ clocks = <&syscon1 SCU1_CLK_GATE_UART11CLK>;
+ interrupts-extended = <&intc1_4 17>;
+ no-loopback-test;
+ status = "disabled";
+ };
+
+ uart12: serial at 14c33b00 {
+ compatible = "ns16550a";
+ reg = <0x0 0x14c33b00 0x0 0x100>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ clocks = <&syscon1 SCU1_CLK_GATE_UART12CLK>;
+ interrupts-extended = <&intc1_4 18>;
+ no-loopback-test;
+ status = "disabled";
+ };
+
+ uart13: serial at 14c33c00 {
+ compatible = "ns16550a";
+ reg = <0x0 0x14c33c00 0x0 0x100>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ clocks = <&syscon1 SCU1_CLK_UART13>;
+ interrupts-extended = <&intc1_0 23>;
+ no-loopback-test;
+ status = "disabled";
+ };
+
+ uart14: serial at 14c33d00 {
+ compatible = "ns16550a";
+ reg = <0x0 0x14c33d00 0x0 0x100>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ clocks = <&syscon1 SCU1_CLK_UART14>;
+ interrupts-extended = <&intc1_1 23>;
+ no-loopback-test;
+ status = "disabled";
+ };
+};
--
2.34.1
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