[PATCH 2/2] arm64: dts: add support for T7 based Amlogic AN400

[Xianwei Zhao]

Amlogic T7 is an advanced application processor designed for smart display.

Add basic support for the T7 based Amlogic AN400 board, which describes
the following components: CPU, GIC, IRQ, Timer, UART. It's capable of
booting up into the serial console.

Signed-off-by: Xianwei Zhao <xianwei.zhao at amlogic.com>
---
 arch/arm64/boot/dts/amlogic/Makefile          |   1 +
 .../dts/amlogic/amlogic-t7-a311d2-an400.dts   |  30 ++++
 arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi   | 156 ++++++++++++++++++
 3 files changed, 187 insertions(+)
 create mode 100644 arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-an400.dts
 create mode 100644 arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi

diff --git a/arch/arm64/boot/dts/amlogic/Makefile b/arch/arm64/boot/dts/amlogic/Makefile
index 6f61798a109f..99299731f5d4 100644
--- a/arch/arm64/boot/dts/amlogic/Makefile
+++ b/arch/arm64/boot/dts/amlogic/Makefile
@@ -1,5 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_ARCH_MESON) += amlogic-c3-c302x-aw409.dtb
+dtb-$(CONFIG_ARCH_MESON) += amlogic-t7-a311d2-an400.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-a1-ad401.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-axg-jethome-jethub-j100.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-axg-jethome-jethub-j110-rev-2.dtb
diff --git a/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-an400.dts b/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-an400.dts
new file mode 100644
index 000000000000..7ce1975b99e4
--- /dev/null
+++ b/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-an400.dts
@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2023 Amlogic, Inc. All rights reserved.
+ */
+
+/dts-v1/;
+
+#include "amlogic-t7.dtsi"
+
+/ {
+	model = "Amlogic A311D2 AN400 Development Board";
+	compatible = "amlogic,an400", "amlogic,t7";
+	interrupt-parent = <&gic>;
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	aliases {
+		serial0 = &uart_a;
+	};
+
+	memory at 0 {
+		device_type = "memory";
+		linux,usable-memory = <0x00000000 0x00000000 0x00000000 0xE0000000
+					0x00000001 0x00000000 0x00000000 0x20000000>;
+	};
+};
+
+&uart_a {
+	status = "okay";
+};
diff --git a/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi b/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
new file mode 100644
index 000000000000..d3ee864f0d40
--- /dev/null
+++ b/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
@@ -0,0 +1,156 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2023 Amlogic, Inc. All rights reserved.
+ */
+
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/gpio/gpio.h>
+/ {
+	cpus:cpus {
+		#address-cells = <2>;
+		#size-cells = <0>;
+
+		cpu-map {
+			cluster0 {
+				core0 {
+					cpu = <&cpu0>;
+				};
+				core1 {
+					cpu = <&cpu1>;
+				};
+				core2 {
+					cpu = <&cpu2>;
+				};
+				core3 {
+					cpu = <&cpu3>;
+				};
+			};
+			cluster1 {
+				core0 {
+					cpu = <&cpu4>;
+				};
+				core1 {
+					cpu = <&cpu5>;
+				};
+				core2 {
+					cpu = <&cpu6>;
+				};
+				core3 {
+					cpu = <&cpu7>;
+				};
+			};
+		};
+
+		cpu0:cpu at 0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a73";
+			reg = <0x0 0x0>;
+			enable-method = "psci";
+		};
+
+		cpu1:cpu at 1 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a73";
+			reg = <0x0 0x1>;
+			enable-method = "psci";
+		};
+
+		cpu2:cpu at 2 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a73";
+			reg = <0x0 0x2>;
+			enable-method = "psci";
+		};
+
+		cpu3:cpu at 3 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a73";
+			reg = <0x0 0x3>;
+			enable-method = "psci";
+		};
+
+		cpu4:cpu at 100 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x0 0x100>;
+			enable-method = "psci";
+		};
+
+		cpu5:cpu at 101{
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x0 0x101>;
+			enable-method = "psci";
+		};
+
+		cpu6:cpu at 102 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x0 0x102>;
+			enable-method = "psci";
+		};
+
+		cpu7:cpu at 103 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x0 0x103>;
+			enable-method = "psci";
+		};
+	};
+
+	timer {
+		compatible = "arm,armv8-timer";
+		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
+			     <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
+			     <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
+			     <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>;
+	};
+
+	psci {
+		compatible = "arm,psci-0.2";
+		method = "smc";
+	};
+
+	xtal: xtal-clk {
+		compatible = "fixed-clock";
+		clock-frequency = <24000000>;
+		clock-output-names = "xtal";
+		#clock-cells = <0>;
+	};
+
+	soc {
+		compatible = "simple-bus";
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		gic: interrupt-controller at fff01000 {
+			compatible = "arm,gic-400";
+			#interrupt-cells = <3>;
+			#address-cells = <0>;
+			interrupt-controller;
+			reg = <0x0 0xfff01000 0 0x1000>,
+			    <0x0 0xfff02000 0 0x0100>;
+			interrupts = <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_HIGH)>;
+		     };
+
+		apb4: bus at fe000000 {
+			compatible = "simple-bus";
+			reg = <0x0 0xfe000000 0x0 0x480000>;
+			#address-cells = <2>;
+			#size-cells = <2>;
+			ranges = <0x0 0x0 0x0 0xfe000000 0x0 0x480000>;
+
+			uart_a: serial at 78000 {
+				compatible = "amlogic,meson-s4-uart",
+					     "amlogic,meson-ao-uart";
+				reg = <0x0 0x78000 0x0 0x18>;
+				interrupts = <GIC_SPI 168 IRQ_TYPE_EDGE_RISING>;
+				status = "disabled";
+				clocks = <&xtal>,<&xtal>,<&xtal>;
+				clock-names = "xtal", "pclk", "baud";
+			};
+		};
+	};
+};
-- 
2.37.1